Polyester-based resin composition, and film of the same

Abstract

To provide a non-crystalline or low crystalline polyester-based resin composition which enables production of a film excellent in stress crack resistance, and a film of the same.SOLUTION: A resin composition contains (A) non-crystalline or low crystalline polyester, (B) a polybutylene terephthalate-based polymer, (D) glycerol / polyvalent carboxylic acid / fatty acid ester, and (E) glycerol / oxyfatty acid ester. Preferably, the resin composition further contains (C) a core shell rubber. Preferably, the component (B) is a polyester-based elastomer having a polybutylene terephthalate hard segment and an aliphatic polyester soft segment.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a polyester resin composition and a film thereof. [Background technology]

[0002] Conventionally, decorative decorative sheets have been applied to the surface of substrates formed from wood-based materials such as wood, plywood, laminated lumber, particle board, and hardboard; substrates formed from resin-based materials such as polystyrene, acrylonitrile-butadiene-styrene copolymer resin (ABS resin), polycarbonate, and polyester; or substrates formed from metal-based materials such as iron and aluminum, for use as home appliances such as refrigerators, washing machines, air conditioners, mobile phones, and personal computers; furniture such as decorative shelves, storage chests, cupboards, and desks; or building materials such as floors, walls, and bathrooms. Conventionally, decorative decorative sheets (so-called wallpaper) have been applied to the surface of walls of buildings made of wood-based materials such as wood, plywood, laminated lumber, particle board, and hardboard; metal-based materials such as iron and aluminum; and inorganic materials such as gypsum, for decoration. Films of amorphous or low-crystalline polyester resin compositions are often used as films constituting each layer of such decorative sheets. This is because the film of the amorphous or low crystalline polyester resin composition has high transparency and gloss, good impact resistance, and excellent embossing processability and three-dimensional moldability. However, the film of the amorphous or low crystalline polyester resin composition has the disadvantage that it does not have sufficient stress crack resistance (it is prone to cracking when it comes into contact with an alkaline detergent, etc.). Moreover, orange oil is often added to alkaline detergents, and the disadvantage of stress crack resistance becomes more pronounced when the amount of orange oil added is greater. In addition, the disadvantage of stress crack resistance becomes more pronounced when the decorative sheet is applied to a substrate by three-dimensional molding such as vacuum molding, pressure molding, vacuum pressure molding, membrane press molding, in-mold molding, insert mold molding, and overlay vacuum molding. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3492318 [Patent Document 2] JP 2002-053741 A [Patent Document 3] Japanese Patent Application Publication No. 05-086277 [Patent Document 4] JP 2003-138116 A [Patent Document 5] JP 2014-162833 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a non-crystalline or low-crystalline polyester resin composition which can give a film having excellent stress crack resistance, and a film thereof. [Means for solving the problem]

[0005] As a result of extensive research, the present inventors have found that the above object can be achieved by using a specific resin composition.

[0006] That is, the various aspects of the present invention are as follows. [1]. (A) 60 to 99 mass% of a non-crystalline or low-crystalline polyester (excluding those corresponding to component (B) below), (B) 1 to 20% by mass of a polybutylene terephthalate polymer, and (C) 0 to 20 mass% of a core-shell rubber, Here, the sum of the blending ratios of the above components (A), (B), and (C) is 100 mass %, and the resin mixture is 100 mass %. (D) 0.01 to 10 parts by mass of glycerin / polycarboxylic acid / fatty acid ester, and (E) Glycerin oxy fatty acid ester 0.01 to 10 parts by mass A resin composition comprising: [2]. The resin composition according to item [1], wherein the component (B) polybutylene terephthalate polymer contains a polyester elastomer having a polybutylene terephthalate hard segment and an aliphatic polyether soft segment. [3]. The resin composition according to item [1], wherein the component (D) glycerin-polycarboxylic acid-fatty acid ester comprises at least one member selected from the group consisting of glycerin-saturated aliphatic dicarboxylic acid-saturated higher fatty acid ester having 12 to 22 carbon atoms, and glycerin-hydroxyl group-containing saturated aliphatic polycarboxylic acid-saturated higher fatty acid ester having 12 to 22 carbon atoms. [4]. The resin composition according to item [1], wherein the component (D) glycerin-polyvalent carboxylic acid-fatty acid ester contains glycerin-citric acid-saturated higher fatty acid ester having 12 to 22 carbon atoms. [5]. The resin composition according to item [1], wherein the component (E) glycerin oxy fatty acid ester contains glycerin 12-hydroxystearic acid ester. [6]. A film made of the resin composition according to any one of items [1] to [5]. [7]. A decorative sheet comprising the film according to item [6]. Effect of the Invention

[0007] The film made of the resin composition of the present invention has excellent stress crack resistance. The film made of the preferred resin composition of the present invention also has excellent transparency and good three-dimensional moldability. Therefore, the resin composition of the present invention can be suitably used as a material for the film constituting the decorative sheet. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] In this specification, the term "resin" is used to include a resin mixture containing two or more resins, and a resin composition containing components other than resin.

[0009] In this specification, the term "film" is used interchangeably or interchangeably with "sheet." In this specification, the terms "film" and "sheet" are used for those that can be industrially wound into a roll. The term "plate" is used for those that cannot be industrially wound into a roll. In addition, in this specification, laminating a certain layer and another layer in order includes both directly laminating the layers and laminating the layers with one or more other layers, such as an anchor coat, interposed between the layers.

[0010] In this specification, the term "more than" in relation to a numerical range means a certain number or more than a certain number. For example, 20% or more means 20% or more than 20%. The term "less than" in relation to a numerical range means a certain number or less than a certain number. For example, 20% or less means 20% or less than 20%. Furthermore, the symbol "~" in relation to a numerical range means a certain number, more than a certain number and less than another certain number, or another certain number. Here, the other certain number is a number larger than the certain number. For example, 10 to 90% means 10%, more than 10% and less than 90%, or 90%. Furthermore, the upper and lower limits of the numerical range can be arbitrarily combined, and an embodiment in which the values ​​are arbitrarily combined can be read. For example, from a statement regarding the numerical range of a certain characteristic such as "usually 10% or more, preferably 20% or more. On the other hand, it is usually 40% or less, preferably 30% or less" or "usually 10 to 40%, preferably 20 to 30%," it can be read that the numerical range of the certain characteristic is 10 to 40%, 20 to 30%, 10 to 30%, or 20 to 40% in one embodiment.

[0011] Other than in the examples, or where otherwise specified, all numerical values ​​used in the specification and claims should be understood to be modified by the term "about." Without attempting to limit the application of the doctrine of equivalents to the scope of the claims, each numerical value should be construed in light of the number of significant digits and by applying ordinary rounding techniques.

[0012] In this specification, terms specifying shapes or geometric conditions, such as parallel, orthogonal, and perpendicular, are intended to include substantially the same state in addition to their strict meanings.

[0013] In this specification, when it is explained that "comprises a certain substance", it is to be understood that in one embodiment, it contains a certain substance, consists of a certain substance, or consists only of a certain substance. For example, from the explanation that "composition A comprises substance a1 and substance a2", it is to be understood that in one embodiment, composition A comprises substance a1 and substance a2, composition A consists of substance a1 and substance a2, or composition A consists only of substance a1 and substance a2.

[0014] 1.Resin composition: The resin composition of the present invention contains (A) a non-crystalline or low-crystalline polyester, (B) a polybutylene terephthalate-based polymer, (D) a glycerin-polycarboxylic acid-fatty acid ester, and (E) a glycerin-oxyfatty acid ester. In one of the preferred embodiments, the resin composition of the present invention further contains (C) a core-shell rubber. Each component will be described below.

[0015] (A) Amorphous or low-crystalline polyester: The resin composition of the present invention includes the above-mentioned component (A) amorphous or low-crystalline polyester. In this specification, the amorphous or low-crystalline polyester means a polyester in which no melting peak is observed in the second melting curve (melting curve measured in the final heating process) measured by a temperature program using a Diamond DSC type differential scanning calorimeter manufactured by PerkinElmer Japan Co., Ltd., in which a sample is held at 320°C for 5 minutes, cooled to -50°C at a temperature drop rate of 20°C / min, held at -50°C for 5 minutes, and then heated to 320°C at a temperature rise rate of 20°C / min, or the melting peak has a heat of fusion of 30 J / g or less.

[0016] The heat of fusion of the melting peak of the non-crystalline or low-crystalline polyester (A) may be preferably 20 J / g or less, more preferably 10 J / g or less, and even more preferably 5 J / g or less, from the viewpoint of embossing processability and three-dimensional moldability. The non-crystalline or low-crystalline polyester (A) may most preferably be one that has no melting peak in the second melting curve.

[0017] In this specification, a non-crystalline or low-crystalline polyester that is also a polybutylene terephthalate polymer is the above-mentioned component (B) polybutylene terephthalate polymer. In other words, a material that corresponds to the above-mentioned component (B) polybutylene terephthalate polymer is excluded from the above-mentioned component (A) non-crystalline or low-crystalline polyester.

[0018] Examples of the above-mentioned component (A) amorphous or low-crystalline polyester include polyester-based copolymers of dicarboxylic acids such as aromatic dicarboxylic acids and aliphatic dicarboxylic acids with dihydric alcohols and dihydroxy compounds such as aromatic dihydroxy compounds, which satisfy the definition of the above-mentioned amorphous or low-crystalline polyester.

[0019] Examples of the aromatic dicarboxylic acid include terephthalic acid, isophthalic acid, orthophthalic acid, and naphthalenedicarboxylic acid.

[0020] Examples of the aliphatic dicarboxylic acid include chain aliphatic dicarboxylic acids such as adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanedicarboxylic acid, dodecanedicarboxylic acid, tridecanedicarboxylic acid, tetradecanedicarboxylic acid, pentadecanedicarboxylic acid, hexadecanedicarboxylic acid, octadecanedicarboxylic acid, and eicosanedicarboxylic acid; and alicyclic dicarboxylic acids such as 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, dicyclohexanemethane-4,4'-dicarboxylic acid, and norbornanedicarboxylic acid.

[0021] The dicarboxylic acid is preferably an aromatic dicarboxylic acid.

[0022] As the dicarboxylic acid, one or a mixture of two or more of these can be used.

[0023] Examples of the dihydric alcohol include chain dihydric alcohols such as ethylene glycol, diethylene glycol, neopentyl glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 3-methyl-1,5-pentanediol, and 2-methyl-1,3-propanediol, as well as cyclic dihydric alcohols such as 1,4-cyclohexanedimethanol, 1,4-cyclohexanediol, and 2,2,4,4-tetramethyl-1,3-cyclobutanediol.

[0024] Examples of the aromatic dihydroxy compound include bisphenol A (2,2-bis(4-hydroxyphenyl)propane), 2,2-bis(4-hydroxy-3-methylphenyl)propane, 2,2-bis(4-hydroxy-3,5-dimethylphenyl)propane, 2,2-bis(4-hydroxy-3,5-diethylphenyl)propane, 2,2-bis(4-hydroxyphenyl)pentane, 3,3-bis(4-hydroxyphenyl)pentane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, and 1,1-bis(4-hydroxy-3-methylphenyl)cyclohexane.

[0025] As the dihydroxy compound, the above dihydric alcohols are preferred.

[0026] As the dihydroxy compound, one or a mixture of two or more of these can be used.

[0027] Examples of the component (A) amorphous or low-crystalline aromatic polyester resin include glycol-modified polyethylene terephthalate (PETG) containing 45 to 50 mol % of terephthalic acid, 30 to 40 mol % of ethylene glycol, and 10 to 20 mol % of 1,4-cyclohexanedimethanol, with the sum of the monomers being 100 mol %; glycol-modified polycyclohexylene dimethylene terephthalate (PCTG) containing 45 to 50 mol % of terephthalic acid, 16 to 21 mol % of ethylene glycol, and 29 to 34 mol % of 1,4-cyclohexanedimethanol; and 25 to 49.5 mol % of terephthalic acid, 0.5 to 25 mol % of isophthalic acid, and 45 to 50 mol % of 1,4-cyclohexanedimethanol, with the sum of the monomers being 100 mol %. %. Examples of the acid-modified and glycol-modified polyethylene terephthalate include acid-modified polycyclohexylene dimethylene terephthalate (PCTA) containing 30 to 45 mol % terephthalic acid, 5 to 20 mol % isophthalic acid, 35 to 48 mol % ethylene glycol, 2 to 15 mol % neopentyl glycol, less than 1 mol % diethylene glycol, and less than 1 mol % bisphenol A. Examples of the acid-modified and glycol-modified polyethylene terephthalate include acid-modified and glycol-modified polyethylene terephthalate containing 45 to 50 mol % terephthalic acid, 0 to 5 mol % isophthalic acid, 25 to 45 mol % 1,4-cyclohexanedimethanol, and 5 to 25 mol % 2,2,4,4,-tetramethyl-1,3-cyclobutanediol.

[0028] As the component (A), the amorphous or low-crystalline aromatic polyester resin, one or a mixture of two or more of these can be used.

[0029] (B) Polybutylene terephthalate polymer: The resin composition of the present invention contains the polybutylene terephthalate polymer (B) as the component (B). The polybutylene terephthalate polymer (B) as the component (B) is a polymer (copolymer) containing a crystalline copolymer component of terephthalic acid and 1,4-butanediol.

[0030] Without intending to be bound by theory, the reason why the stress crack resistance of the amorphous or low crystalline polyester resin composition is improved by the synergistic action of the component (B) polybutylene terephthalate polymer, the component (D) glycerin-polycarboxylic acid-fatty acid ester, and the component (E) glycerin-oxyfatty acid ester is considered to be as follows. The component (B) polybutylene terephthalate polymer contains a crystalline copolymer component of terephthalic acid and 1,4-butanediol, and therefore acts to increase the residual stress during film formation and when the film is applied to a substrate by three-dimensional molding. As a result, the component (B) polybutylene terephthalate polymer alone cannot sufficiently increase the stress crack resistance of the amorphous or low crystalline polyester resin composition. By adding the above-mentioned component (D) glycerin-polycarboxylic acid-fatty acid ester and the above-mentioned component (E) glycerin-oxyfatty acid ester, both the internal and external lubrication of the amorphous or low-crystalline polyester resin composition are sufficiently increased over a wide temperature range, and the residual stress during film formation and when the film is applied to a substrate by three-dimensional molding is extremely small. As a result, the chemical resistance inherent to the above-mentioned component (B) polybutylene terephthalate polymer is fully expressed, and the stress crack resistance of the amorphous or low-crystalline polyester resin composition can be sufficiently increased.

[0031] In this specification, a polybutylene terephthalate polymer that satisfies the above definition of the non-crystalline or low-crystalline polyester is the above component (B) polybutylene terephthalate polymer.

[0032] Examples of the polybutylene terephthalate polymer of component (B) include polybutylene terephthalate (a copolymer of terephthalic acid and 1,4-butanediol) and polyester-based elastomers having a polybutylene terephthalate hard segment (a copolymer segment of terephthalic acid and 1,4-butanediol).

[0033] The polybutylene terephthalate may contain a small amount of structural units derived from comonomers other than terephthalic acid and 1,4-butanediol, as long as the object of the present invention is not violated. The polybutylene terephthalate hard segment may contain a small amount of structural units derived from comonomers other than terephthalic acid and 1,4-butanediol, as long as the object of the present invention is not violated.

[0034] The comonomer that may be contained in the polybutylene terephthalate or the polybutylene terephthalate hard segment may include, for example, dicarboxylic acids such as aromatic dicarboxylic acids and aliphatic dicarboxylic acids, dihydric alcohols, and dihydroxy compounds such as aromatic dihydroxy compounds. Specific examples of these compounds include those mentioned above in the description of the component (A) non-crystalline or low-crystalline polyester. As the comonomer, one or more of these may be used.

[0035] Examples of the polyester-based elastomer include the polyester-based elastomer (1) having the polybutylene terephthalate hard segment and an aliphatic polyether soft segment, and the polyester-based elastomer (2) having the polybutylene terephthalate hard segment and an aliphatic polyester soft segment.

[0036] Examples of the aliphatic polyether soft segment include a copolymer segment of a dicarboxylic acid and a saturated aliphatic polyether, and a polymer segment of a saturated aliphatic polyether.

[0037] The dicarboxylic acid that the aliphatic polyether soft segment may contain may be, for example, aromatic dicarboxylic acid, aliphatic dicarboxylic acid, or other dicarboxylic acid. Specific examples of these compounds include those mentioned above in the description of the component (A) non-crystalline or low-crystalline polyester. As the dicarboxylic acid, one or more of these may be used.

[0038] Examples of the saturated aliphatic polyether include polytetramethylene ether glycol, polypropylene glycol, polyethylene glycol, and polymers of one or more of these. As the saturated aliphatic polyether, one or more of these can be used.

[0039] Examples of the aliphatic polyester soft segment include a copolymer segment of an aliphatic dicarboxylic acid and a dihydric alcohol, and a ring-opening polymerization segment of a lactone such as ε-caprolactone.

[0040] Specific examples of the aliphatic dicarboxylic acid that may be contained in the aliphatic polyester soft segment include those mentioned in the description of the non-crystalline or low-crystalline polyester of component (A). As the aliphatic dicarboxylic acid, one or more of these may be used.

[0041] Specific examples of the dihydric alcohol that may be contained in the aliphatic polyester soft segment include those mentioned in the description of the non-crystalline or low-crystalline polyester of component (A). As the dihydric alcohol, one or more of these may be used.

[0042] From the viewpoint of transparency, the polybutylene terephthalate polymer of component (B) may preferably contain the polyester elastomer (1) (a polyester elastomer having the polybutylene terephthalate hard segment and the aliphatic polyether soft segment) and / or the polyester elastomer (2) (a polyester elastomer having the polybutylene terephthalate hard segment and the aliphatic polyester soft segment), and more preferably may contain the polyester elastomer (1).

[0043] As the polybutylene terephthalate polymer (B) mentioned above, one or a mixture of two or more of these can be used.

[0044] (C) Core-shell rubber: In one preferred embodiment, the resin composition of the present invention may further contain the component (C) core-shell rubber. By including the component (C) core-shell rubber, it is possible to improve the film-forming properties by calender roll rolling and the weather resistance.

[0045] The component (C) core-shell rubber is a rubber having a core-shell structure. Examples of the component (C) core-shell rubber include graft copolymers obtained by graft polymerizing an aromatic vinyl compound such as styrene, a methacrylic acid ester, an acrylic acid ester, acrylonitrile, and methacrylonitrile onto rubber particles, usually vulcanized rubber particles.

[0046] Examples of the rubber particles include conjugated diene rubbers such as butadiene rubber and styrene-butadiene rubber, acrylic rubbers such as acrylate rubber, and olefin rubbers such as ethylene-propylene rubber and ethylene-propylene-diene rubber.

[0047] Examples of the methacrylic acid ester include alkyl methacrylates such as methyl methacrylate, ethyl methacrylate, and butyl methacrylate.

[0048] Examples of the acrylic ester include alkyl acrylates such as methyl acrylate, ethyl acrylate, and butyl acrylate.

[0049] Examples of the component (C) core-shell rubber include methacrylate / butadiene rubber graft copolymers, methacrylate / styrene / butadiene rubber graft copolymers, methacrylate / styrene / butadiene rubber graft copolymers, methacrylate / styrene / butadiene rubber graft copolymers, methacrylate / styrene / styrene / butadiene rubber graft copolymers, acrylonitrile / styrene / butadiene rubber graft copolymers, acrylonitrile / styrene / styrene / butadiene rubber graft copolymers, acrylonitrile / styrene / ethylene / propylene rubber graft copolymers, acrylonitrile / styrene / acrylic ester rubber graft copolymers, methacrylate / acrylic ester rubber graft copolymers, methacrylate / styrene / acrylic ester rubber graft copolymers, and methacrylate / acrylonitrile / acrylic ester rubber graft copolymers.

[0050] As the component (C) core-shell rubber, one or a mixture of two or more of these can be used.

[0051] The compounding ratios of the component (A) non-crystalline or low-crystalline polyester, the component (B) polybutylene terephthalate polymer, and the component (C) core-shell rubber will be explained assuming that the sum of the compounding ratios of the components (A), (B), and (C) is 100 mass%.

[0052] The blending ratio of the above-mentioned component (A) amorphous or low-crystalline polyester is usually 99% by mass or less, preferably 98% by mass or less, more preferably 97% by mass or less, even more preferably 96% by mass or less, and most preferably 95% by mass or less, from the viewpoint of stress crack resistance. On the other hand, from the viewpoint of maintaining the preferable characteristics of the amorphous or low-crystalline polyester (high transparency, glossiness, good impact resistance, excellent embossing processability and three-dimensional moldability), it may be usually 60% by mass or more, preferably 70% by mass or more, more preferably 76% by mass or more, even more preferably 80% by mass or more, and most preferably 85% by mass or more.

[0053] The blending ratio of the polybutylene terephthalate polymer (B) is usually 1% by mass or more, preferably 2% by mass or more, more preferably 3% by mass or more, even more preferably 4% by mass or more, and most preferably 5% by mass or more from the viewpoint of stress crack resistance, while it may be usually 20% by mass or less, preferably 15% by mass or less, more preferably 12% by mass or less, even more preferably 10% by mass or less, and most preferably 9% by mass or less from the viewpoint of transparency.

[0054] The compounding ratio of the component (C) core-shell rubber is not particularly limited as long as it is an optional component and does not contradict the object of the present invention. The compounding ratio of the component (C) core-shell rubber may be usually 0 to 20% by mass. From the viewpoint of film formability by calendar roll rolling, the compounding ratio of the component (C) core-shell rubber may be preferably 1% by mass or more, more preferably 2% by mass or more, and even more preferably 3% by mass or more. On the other hand, from the viewpoint of transparency, the compounding ratio may be preferably 15% by mass or less, more preferably 12% by mass or less, even more preferably 10% by mass or less, and most preferably 7% by mass or less.

[0055] (D) Glycerin-polycarboxylic acid-fatty acid ester: The resin composition of the present invention contains the above-mentioned component (D) glycerin-polycarboxylic acid-fatty acid ester. Although there is no intention to be bound by theory, as described above, it is considered that the above-mentioned component (D) glycerin-polycarboxylic acid-fatty acid ester acts to improve stress crack resistance by a synergistic effect with the above-mentioned component (B) polybutylene terephthalate polymer and the above-mentioned component (E) glycerin-oxy fatty acid ester.

[0056] The above-mentioned component (D) glycerin-polycarboxylic acid-fatty acid ester is a compound in which at least one of the three hydroxyl groups in glycerin is ester-bonded to a polycarboxylic acid, and at least one of the three hydroxyl groups in glycerin is ester-bonded to a fatty acid.

[0057] The polycarboxylic acid is a compound having two or more carboxyl groups (-COOH) in one molecule. Examples of the polycarboxylic acid include aliphatic polycarboxylic acids such as saturated aliphatic polycarboxylic acids, unsaturated aliphatic polycarboxylic acids, and hydroxyl-containing aliphatic polycarboxylic acids.

[0058] Examples of the saturated aliphatic polycarboxylic acid include saturated aliphatic dicarboxylic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, and sebacic acid.

[0059] Examples of the unsaturated aliphatic polycarboxylic acid include unsaturated aliphatic dicarboxylic acids such as maleic acid, fumaric acid, citraconic acid, and itaconic acid.

[0060] Examples of the hydroxyl group-containing aliphatic polycarboxylic acid include hydroxyl group-containing saturated aliphatic dicarboxylic acids such as malic acid and tartaric acid, and hydroxyl group-containing saturated aliphatic tricarboxylic acids such as citric acid.

[0061] As the polycarboxylic acid, the aliphatic polycarboxylic acids are preferred, the saturated aliphatic polycarboxylic acids and the hydroxyl group-containing aliphatic polycarboxylic acids are more preferred, the saturated aliphatic dicarboxylic acids and the hydroxyl group-containing saturated aliphatic polycarboxylic acids are even more preferred, and citric acid is most preferred.

[0062] As the polyvalent carboxylic acid, one of these may be used alone or a mixture of two or more of them may be used.

[0063] The fatty acid is a monovalent carboxylic acid having a carboxy group (-COOH) in the hydrocarbon chain. Examples of the fatty acid include higher fatty acids such as saturated higher fatty acids, unsaturated higher fatty acids, and hydroxyl higher fatty acids. In this specification, the higher fatty acid means a fatty acid having 6 or more carbon atoms, preferably 10 or more carbon atoms.

[0064] Examples of the saturated higher fatty acids include capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid, montanic acid, and melissic acid.

[0065] Examples of the unsaturated higher fatty acids include oleic acid, linoleic acid, ricinoleic acid, behenic acid, and erucic acid.

[0066] The above-mentioned hydroxyl higher fatty acid may include, for example, 12-hydroxystearic acid.

[0067] As the fatty acid, the above-mentioned higher fatty acids are preferred, the above-mentioned saturated higher fatty acids are more preferred, and saturated higher fatty acids having 12 to 22 carbon atoms are even more preferred.

[0068] As the fatty acid, one or a mixture of two or more of these can be used.

[0069] The component (D) glycerin-polycarboxylic acid-fatty acid ester may preferably contain glycerin-the above-mentioned aliphatic polycarboxylic acid-the above-mentioned higher fatty acid ester, more preferably contain one or more selected from the group consisting of glycerin-the above-mentioned saturated aliphatic polycarboxylic acid-the above-mentioned saturated higher fatty acid ester, and glycerin-the above-mentioned hydroxyl-containing aliphatic polycarboxylic acid-the above-mentioned saturated higher fatty acid ester, even more preferably contain one or more selected from the group consisting of glycerin-the above-mentioned saturated aliphatic dicarboxylic acid-the above-mentioned saturated higher fatty acid ester having 12 to 22 carbon atoms, and glycerin-the above-mentioned hydroxyl-containing saturated aliphatic polycarboxylic acid-the above-mentioned saturated higher fatty acid ester, and most preferably contain glycerin-citric acid-the saturated higher fatty acid ester having 12 to 22 carbon atoms.

[0070] As the glycerin-polycarboxylic acid-fatty acid ester (D) mentioned above, one or a mixture of two or more of these can be used.

[0071] The method for synthesizing the component (D) glycerin-polycarboxylic acid-fatty acid ester is not particularly limited and may be a known method. As a method for synthesizing the component (D) glycerin-polycarboxylic acid-fatty acid ester, for example, a method of esterifying a monoester or / and diester of commercially available glycerin and the above fatty acid with the above polycarboxylic acid by a known method can be mentioned. As a method for the esterification, for example, a method of introducing raw materials and a solvent into a reaction vessel, and carrying out an esterification reaction at a temperature of about 150 to 300°C while stirring in the presence or absence of an esterification catalyst such as sulfuric acid and p-toluenesulfonic acid can be mentioned. At this time, the inside of the reaction vessel may be purged with nitrogen. After the reaction, a post-treatment such as distillation under reduced pressure may be carried out to remove unreacted raw materials.

[0072] The amount of the glycerin-polyvalent carboxylic acid-fatty acid ester (D) is, based on 100 parts by mass of the resin mixture consisting of the component (A) non-crystalline or low-crystalline polyester, the component (B) polybutylene terephthalate polymer, and the component (C) core-shell rubber (the sum of the amounts of the component (A) non-crystalline or low-crystalline polyester, the component (B) polybutylene terephthalate polymer, and the component (C) core-shell rubber is 100 parts by mass), from the viewpoint of stress crack resistance, usually 0.01 parts by mass or more, preferably 0.10 parts by mass or more, more preferably 0.30 parts by mass or more, and even more preferably 0.50 parts by mass or more. On the other hand, from the viewpoint of bleed-out resistance, it may be usually 10 parts by mass or less, preferably 7 parts by mass or less, more preferably 5 parts by mass or less, and even more preferably 3 parts by mass or less.

[0073] (E) Glycerin hydroxy fatty acid ester: The resin composition of the present invention contains the above-mentioned component (E) glycerin-oxy fatty acid ester. Although there is no intention to be bound by theory, as described above, it is considered that the above-mentioned component (E) glycerin-oxy fatty acid ester acts to improve stress crack resistance by a synergistic effect with the above-mentioned component (B) polybutylene terephthalate polymer and the above-mentioned component (D) glycerin-polycarboxylic acid-fatty acid ester.

[0074] The above-mentioned component (E) glycerin oxyfatty acid ester is a compound in which at least one of the three hydroxyl groups of glycerin, and typically all three hydroxyl groups of glycerin, are ester-bonded to a oxyfatty acid.

[0075] The oxyfatty acid is a monovalent carboxylic acid having a carboxy group (-COOH) in the hydrocarbon chain, and is a compound having one or more hydroxyl groups in the hydrocarbon chain.

[0076] Examples of the oxy fatty acid include monooxy saturated higher fatty acids such as hydroxycapric acid, hydroxylauric acid, hydroxymyristic acid, hydroxypalmitic acid, hydroxystearic acid, hydroxyarachic acid, and hydroxybehenic acid; and monooxy unsaturated higher fatty acids such as ricinoleic acid and hydroxyoctadecenoic acid. The definition of higher fatty acid is given above.

[0077] The oxy fatty acid is preferably the monooxy saturated higher fatty acid, more preferably a monooxy saturated higher fatty acid having 12 to 22 carbon atoms, and further preferably 12-hydroxystearic acid.

[0078] As the hydroxy fatty acid, one or a mixture of two or more of these can be used.

[0079] The above-mentioned component (E) glycerin-oxy fatty acid ester may preferably contain glycerin-the above-mentioned monooxy saturated higher fatty acid ester, more preferably contain glycerin-monooxy saturated higher fatty acid ester having 12 to 22 carbon atoms, and even more preferably contain glycerin-12-hydroxystearic acid ester.

[0080] As the glycerin oxy fatty acid ester (E) mentioned above, one or a mixture of two or more of these can be used.

[0081] The method for synthesizing the component (E) glycerin oxyfatty acid ester is not particularly limited and may be a known method. For example, the method for synthesizing the component (E) glycerin oxyfatty acid ester may be a method in which raw materials and a solvent are introduced into a reaction vessel, and esterification reaction is carried out at a temperature of about 150 to 300°C while stirring in the presence or absence of an esterification catalyst such as sulfuric acid and p-toluenesulfonic acid. At this time, the inside of the reaction vessel may be purged with nitrogen. After the reaction, post-treatment such as vacuum distillation may be carried out to remove unreacted raw materials.

[0082] The amount of the glycerin oxyfatty acid ester (E) is, based on 100 parts by mass of the resin mixture, usually 0.01 parts by mass or more, preferably 0.05 parts by mass or more, more preferably 0.10 parts by mass or more, even more preferably 0.20 parts by mass or more, and most preferably 0.30 parts by mass or more, from the viewpoint of stress crack resistance. On the other hand, from the viewpoint of bleed-out resistance, it may be usually 10 parts by mass or less, preferably 7 parts by mass or less, more preferably 5 parts by mass or less, and even more preferably 3 parts by mass or less.

[0083] The resin composition of the present invention may further contain, if desired, any other optional components other than the component (A) non-crystalline or low-crystalline polyester, the component (B) polybutylene terephthalate polymer, the component (C) core-shell rubber, the component (D) glycerin-polycarboxylic acid-fatty acid ester, and the component (E) glycerin-oxyfatty acid ester, to the extent that it does not deviate from the object of the present invention.

[0084] Examples of the optional components include the component (A) non-crystalline or low-crystalline polyester, the component (B) polybutylene terephthalate polymer, and the component (C) other thermoplastic resins other than the core-shell rubber, the component (D) glycerin-polycarboxylic acid-fatty acid ester, and the component (E) other additives other than the glycerin-oxyfatty acid ester, as well as colorants, fillers, and flame retardants.

[0085] Examples of the other thermoplastic resins include acrylic thermoplastic resins such as polymethyl methacrylate, polyvinyl chloride resins such as vinyl chloride homopolymers, ethylene-vinyl acetate copolymers, and ethylene-(meth)acrylic acid alkyl ester copolymers.

[0086] Examples of the other additives include weather resistance agents such as antioxidants, light stabilizers, and ultraviolet absorbers; antioxidants such as hindered phenol antioxidants, phosphite antioxidants, thioether antioxidants, and amine antioxidants; lubricants such as acid amides, fatty acids, fatty acid metal salts, wax, silicone oil, and modified silicone oil; nucleating agents such as aromatic phosphate metal salts and gel-ols; antistatic agents such as glycerin fatty acid esters; as well as release agents, processing aids, and stain inhibitors.

[0087] Examples of the colorant include inorganic colorants such as titanium dioxide (titania), red iron oxide, ultramarine (ultramarine blue), and carbon black; and organic colorants such as aniline black, quinacridone red, isoindolinone yellow, and phthalocyanine blue.

[0088] Examples of the filler include inorganic fillers such as calcium carbonate, silica (silicon dioxide), talc, mica, clay, hydrotalcite, and zeolite; and organic fillers such as crosslinked acrylic resin particles.

[0089] Examples of the flame retardant include antimony-based flame retardants, halogen-based flame retardants, metal hydroxides, zinc-based flame retardants, organic phosphate ester-based flame retardants, and nitrogen-containing compound-based flame retardants.

[0090] As the other optional components, one or more of these may be used.

[0091] The amount of the other optional components is not particularly limited as long as it does not interfere with the object of the present invention, since they are optional components. The amount of the other optional components is usually 50 parts by mass or less, 40 parts by mass or less, 30 parts by mass or less, 20 parts by mass or less, 10 parts by mass or less, 5 parts by mass or less, 0 to 1 part by mass, or about 0.01 to 50 parts by mass, relative to 100 parts by mass of the resin mixture.

[0092] In one embodiment, the resin composition of the present invention may not contain any one or more of the other optional components described above.

[0093] In this specification, "not containing a certain component" means that the component is not intentionally blended. In the technical field of resin compositions, when the component is intentionally blended, it is usually blended in an amount of 0.01 parts by mass or more. Therefore, "not containing a certain component" can also be rephrased as "the content of the component is usually less than 0.01 parts by mass, preferably 0.001 parts by mass or less, more preferably 0 to 0.0001 parts by mass, relative to 100 parts by mass of the resin mixture."

[0094] 2. Manufacturing method: The resin composition of the present invention can be obtained by using any melt kneader to feed the above-mentioned component (A) non-crystalline or low-crystalline polyester, the above-mentioned component (B) polybutylene terephthalate-based polymer, the above-mentioned component (D) glycerin-polycarboxylic acid-fatty acid ester, and the above-mentioned component (E) glycerin-oxyfatty acid ester, as well as any optional components used as desired, simultaneously or in any order, into the melt kneader and melt kneading, preferably at a resin temperature of 160 to 250°C.

[0095] Examples of the melt kneader include batch kneaders such as pressure kneaders and mixers, extrusion kneaders such as single-screw extruders, co-rotating twin-screw extruders, and counter-rotating twin-screw extruders, and calendar roll kneaders. These may be used in any combination.

[0096] The resin composition thus obtained can be pelletized by any method and then molded into a film using any film-forming device. The pelletization can be performed by a method such as hot cutting, strand cutting, or underwater cutting.

[0097] In one embodiment, the resin composition in the form of blocks, rods, or strands discharged from the melt kneader may be sent directly to any film forming device and formed into a film.

[0098] 3.Film: The film of the present invention is a film made of the resin composition of the present invention. The film of the present invention can be obtained by forming the resin composition of the present invention using any film forming device. The film of the present invention can be suitably used as a film constituting a decorative sheet.

[0099] In one preferred embodiment, the film of the present invention can be obtained by producing the film using a calendar roll rolling film production apparatus equipped with a calendar roll rolling processing machine and a take-up device, more preferably by using the calendar roll rolling film production apparatus and producing the film under conditions of a roll temperature of 160°C to 220°C.

[0100] Examples of the calender roll rolling machine include an upright three-roll machine, an upright four-roll machine, an L-shaped four-roll machine, an inverted L-shaped four-roll machine, and a Z-roll machine.

[0101] In another preferred embodiment, the film of the present invention can be obtained by film production using a T-die film production apparatus equipped with an extruder, a T-die, and a take-up device, more preferably by using the T-die film production apparatus and producing the film under conditions of a T-die outlet resin temperature of 180 to 250°C.

[0102] Examples of the extruder include a single screw extruder, a co-rotating twin screw extruder, and a counter-rotating twin screw extruder, etc. Examples of the T-die include a manifold die, a fishtail die, and a coat hanger die, etc.

[0103] The thickness of the film of the present invention can be appropriately determined taking into consideration the film-forming property, the use and its required properties, and the handling property. From the viewpoint of film-forming property and handling property, the thickness of the film of the present invention may be usually 20 μm or more, preferably 30 μm or more, more preferably 40 μm or more, and even more preferably 50 μm or more. On the other hand, from the viewpoint of responding to the demand for thinning of the article including the film of the present invention, it may be usually 1000 μm or less, preferably 500 μm or less, more preferably 200 μm or less, and even more preferably 150 μm or less.

[0104] The film of the present invention may be transparent, opaque, colored and transparent, or colored and opaque or with hiding properties.

[0105] The film of the present invention, which is a transparent embodiment of the film, can be suitably used, for example, as a film substrate of a decorative sheet used by adhering it to glass, such as a glass decorative film, and as a material constituting the transparent resin layer of a decorative sheet having a transparent resin layer and a concealing film substrate layer.

[0106] The film of the present invention, which is an embodiment having opaque or concealing properties, can be suitably used, for example, as a decorative sheet used for the decoration and make-up of home appliances, furniture, and building components, and as a film base for wallpaper used for the decoration and make-up of building walls.

[0107] Fig. 1 is a schematic cross-sectional view showing an example of a decorative sheet using the film of the present invention. From the surface side, it has a coating film 1 formed using a two-component curing urethane paint, a transparent film layer 2 of the present invention, a printed layer 3, a layer 4 of the film of the present invention colored white and having concealing properties, and an adhesive layer 5. In this specification, the "surface side" means the side that is normally visible in actual use. In the case of a decorative sheet, for example, the "actual use state" means the state in which the decorative sheet is used for decoration and decoration of an article. EXAMPLES

[0108] The present invention will be described below with reference to examples, but the present invention is not limited to these.

[0109] Measurement method (a) Total light transmittance: The total light transmittance (unit: %) of the film was measured using a turbidity meter "NDH4000 (product name)" manufactured by Nippon Denshoku Industries Co., Ltd. in accordance with JIS K7136:2000.

[0110] (b) Stress crack resistance 1: (B-1) Manufacturing of test pieces (1) A smooth-surfaced MDF "MDF processed product (product name)" from Tokunaga NC Co., Ltd. was cut to a length of 300 mm, a width of 200 mm, and a thickness of 18 mm, and the flat surface, front surface, left side surface, right side surface, and the corners formed by the back surface were curved (3 to 10R), and decorative grooves were carved into the flat surface to obtain a base material. A photograph of the obtained base material is shown in Figure 2. (2) The flat surface, front surface, left side surface, right side surface, and back surface of the substrate obtained in the above step (1) were spray-coated with KLEIBERIT's adhesive "630.2 (product name)." (3) A smooth MDF base measuring 290 mm in length, 180 mm in width, and 18 mm in thickness was placed at a predetermined position of a membrane press molding machine "PRESSEN KT-M-139 / 280-24 (trade name)" manufactured by WEMHONER. The base material sprayed with the adhesive in the above step (2) was placed on the base so that its bottom surface was on the base side, so that the vertical direction of the base coincided with the vertical direction of the base material, and so that the intersection of the diagonals of the vertical and horizontal planes of the base coincided with the intersection of the diagonals of the vertical and horizontal planes of the base material. Next, a film cut to a size of 450 mm in the machine direction and 350 mm in the horizontal direction was placed on top of the base material so that the vertical direction of the base material coincided with the machine direction of the film, and so that the intersection of the diagonals of the vertical and horizontal planes of the base material coincided with the intersection of the diagonals of the vertical and horizontal planes of the cut film. (4) The membrane press molding machine was preheated so that the surface temperature of the membrane rubber was 80°C, and then membrane press molding was performed under conditions of a pressure of 0.39 MPa and a pressing time of 60 seconds. A film was then attached to the surface of the substrate in accordance with its shape to obtain a test specimen.

[0111] (B-2) Preparation of test solution 1: Test solution 1 was obtained by mixing 20 ml of orange oil-containing alkaline detergent "Super Orange (product name)" manufactured by UYEKI Co., Ltd. with 10 drops of red ink for oil-based markers.

[0112] (B-3) Treatment of test specimens with test liquid (1) First, the test pieces were stored in an environment of 60° C. and 95% relative humidity for one week. (2) Next, a paper wiper (Kimwipe (product name) by Nippon Paper Crecia Co., Ltd.; the same applies below) cut to a size of 30 mm x 40 mm was spread and placed on the flat surface (flat part in the center) of the test piece, and 10 drops of the above test liquid 1 were evenly dispensed onto the paper wiper using a dropper. (3) After dropping, any air bubbles between the test piece and the paper wiper were removed using tweezers, and the two were brought into close contact with each other. (4) After the bonding, the plates were left to stand for 72 hours in an environment with a temperature of 23±2°C and a relative humidity of 50±10%. At this time, the above-mentioned operation (the operation of dropping the test liquid 1, removing air bubbles, and bonding the plates to each other) was repeated 24 hours and 48 hours after the start of the standing. (5) After a predetermined time had elapsed, the paper wiper containing the test liquid 1 was removed from the test piece, and the test piece was wiped with a new paper wiper soaked in water, and then wiped dry with a new, dry paper wiper to completely remove the test liquid 1 adhering to the surface of the test piece.

[0113] (B-4) Evaluation of stress crack resistance 1 The area of ​​the test piece treated with Test Liquid 1 and its surroundings were visually observed by a person with corrected vision of 1.0 with the naked eye or using a loupe (10x magnification) and evaluated according to the following criteria. A: No cracks or deformations were observed even with a magnifying glass. B: No cracks or deformations were observed with the naked eye. However, cracks and deformations were observed with a magnifying glass. C: Cracks and deformations were visible to the naked eye.

[0114] (C) Stress crack resistance 2: 20 ml of Procter & Gamble Company's orange oil-containing alkaline detergent "Meister Proper (trade name)" was mixed with 10 drops of red ink for oil-based markers to obtain test liquid 2. Except for using test liquid 2 instead of test liquid 1, stress crack resistance 2 was evaluated in the same manner.

[0115] (D) Three-dimensional formability: The surface of the above test piece (not treated with the test solution) prepared in the above test (b) Stress crack resistance 1 was visually observed with the naked eye by a person with corrected eyesight of 1.0 while shining fluorescent light at various angles of incidence, and was evaluated according to the following criteria. A: The film conformed uniformly to the shape of the substrate. The film's appearance maintained a uniform appearance. B: The film stretched to follow the shape of the substrate. However, in areas that were significantly stretched, changes in the appearance of the film, such as whitening, were observed. C: There were some areas where the film was unable to conform to the shape of the substrate.

[0116] Raw materials used (A) Amorphous or low-crystalline polyester: (A-1) Eastman Chemical Company's amorphous aromatic polyester resin "KODAR PETG GS1 (product name)", heat of fusion 0 J / g (no clear melting peak in DSC second melting curve). (A-2) Amorphous aromatic polyester copolymer containing 50.0 mol% of structural units derived from terephthalic acid, 38.7 mol% of structural units derived from 1,4-cyclohexanedimethanol, and 11.3 mol% of structural units derived from 2,2,4,4-tetramethyl-1,3-cyclobutanediol, with the total monomer being 100 mol%. Heat of fusion: 0 J / g (no clear melting peak in DSC second melting curve).

[0117] (B) Polybutylene terephthalate resin: (B-1) "Hytrel 2551 (product name)," a polyester-based elastomer having a polybutylene terephthalate hard segment and an aliphatic polyether soft segment, manufactured by Toray Celanese Co., Ltd. (B-2) "Hytrel 4057N (product name)," a polyester-based elastomer having a polybutylene terephthalate hard segment and an aliphatic polyether soft segment, manufactured by Toray Celanese Co., Ltd. (B-3) Toray Industries, Inc.'s polybutylene terephthalate "Trecon 1200M (product name)."

[0118] (C) Core-shell rubber: (C-1) Kaneka Corporation's core-shell rubber (methacrylate ester-styrene / styrene-butadiene rubber graft copolymer) "Kane Ace B-31 (product name)."

[0119] (D) Glycerin, polycarboxylic acid, saturated fatty acid ester (D-1) Glycerin-citric acid-stearic acid ester “Poem K-30 (product name)” from Riken Vitamin Co., Ltd. (D-2) 100 parts by mass of glycerin mono-dibehenate "Poem B-200 (trade name)" manufactured by Riken Vitamin Co., Ltd. and 64 parts by mass of citric acid conforming to the food additive standard manufactured by Fujifilm Wako Pure Chemical Corporation were esterified by a known method to obtain glycerin-citric acid-behenic acid ester. (D-3) 100 parts by mass of glycerin monolaurate "Poem M-300 (product name)" manufactured by Riken Vitamin Co., Ltd. and 83 parts by mass of citric acid meeting the food additive standards of Fujifilm Wako Pure Chemical Corporation were esterified by a known method to obtain a glycerin-citric acid-lauric acid ester. (D-4) 100 parts by mass of glycerin mono-distearate "Poem S-200 (trade name)" manufactured by Riken Vitamin Co., Ltd. and 28 parts by mass of Wako special grade succinic acid manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. were esterified by a known method to obtain glycerin succinic acid ester.

[0120] (E) Glycerin hydroxy fatty acid ester (E-1) 12-hydroxystearic acid triglyceride "Rikemal TG-12 (product name)" from Riken Vitamin Co., Ltd.

[0121] (F) Other ingredients: (F-1) A 1:1 (mass ratio) mixture of a hindered phenol-based antioxidant "Irganox 1010 (trade name)" manufactured by BASF Japan Ltd. and a phosphite-based antioxidant "Irgafos 168 (trade name)" manufactured by BASF Japan Ltd.

[0122] (G) Comparison components: (G-1) SOES1605 (product name), a hydrogenated styrene-based thermoplastic elastomer from Asahi Kasei Corporation. (G-2) Partially saponified montanic acid ester "RICOWAX OP (product name)" from Clariant Japan Co., Ltd.

[0123] Example 1 A blend consisting of 88 parts by mass of the component (A-1), 8 parts by mass of the component (B-1), 4 parts by mass of the component (C-1), 0.75 parts by mass of the component (D-1), 2.00 parts by mass of the component (E-1), and 0.40 parts by mass of the component (F-1) was melt-kneaded using a co-rotating twin-screw extrusion kneader under the condition of a die outlet resin temperature of 220°C to obtain a polyester-based resin composition. Next, using the polyester-based resin composition, a film having a thickness of 100 μm was produced using a calendar roll rolling processing machine of an inverted L-shaped four-roll type and a calendar roll rolling film production device equipped with a winding device under film production conditions of 1st roll 185°C, 2nd roll 185°C, 3rd roll 190°C, and 4th roll 185°C. The above tests (a) to (d) were carried out on the obtained film. The results are shown in Table 1.

[0124] Examples 2 to 19 A film was obtained in the same manner as in Example 1, except that the composition was changed as shown in Table 1 or 2. The above tests (a) to (d) were carried out on the obtained film. The results are shown in Table 1 or 2.

[0125] [Table 1]

[0126] [Table 2]

[0127] It was found that the film made of the resin composition of the present invention has excellent stress crack resistance. It was also found that the film made of the preferred resin composition of the present invention has excellent transparency and three-dimensional moldability. Therefore, it was considered that the resin composition of the present invention can be suitably used as a material for the film constituting the decorative sheet.

[0128] As described above, since the resin composition of the present invention has favorable properties, it will be obvious to those skilled in the art that it can be suitably used not only for films other than those constituting decorative sheets, but also as a material for constituting articles other than films, such as resin plates, etc. Furthermore, it will be obvious to those skilled in the art that it can be suitably used as a material for injection molding, blow molding, profile extrusion molding, etc. [Brief description of the drawings]

[0129] [Figure 1] FIG. 1 is a schematic cross-sectional view showing an example of a decorative sheet using the film of the present invention. [Diagram 2] 1 is a photograph of the substrate of a test piece prepared in an example. [Explanation of symbols]

[0130] Coating formed using 1:2 liquid curing urethane paint 2: A layer of the transparent film of the present invention 3: Printing layer 4: A layer of the film of the present invention which is colored white and has opacifying properties 5: Adhesive layer

Claims

1. (A) 60 to 99% by mass of a non-crystalline or low-crystalline polyester (excluding those corresponding to the following component (B)), (B) 1 to 20% by mass of a polybutylene terephthalate polymer, and (C) 0 to 20% by mass of a core-shell rubber, Here, the sum of the blending ratios of the above components (A), (B), and (C) is 100 mass %. (D) 0.01 to 10 parts by mass of glycerin, polycarboxylic acid, and fatty acid ester, and (E) Glycerin oxy fatty acid ester 0.01 to 10 parts by mass A resin composition comprising:

2. 2. The resin composition according to claim 1, wherein the component (B) polybutylene terephthalate polymer comprises a polyester elastomer having a polybutylene terephthalate hard segment and an aliphatic polyether soft segment.

3. The resin composition according to claim 1, wherein the component (D) glycerin-polycarboxylic acid-fatty acid ester comprises at least one selected from the group consisting of glycerin-saturated aliphatic dicarboxylic acid-saturated higher fatty acid ester having 12 to 22 carbon atoms, and glycerin-hydroxyl group-containing saturated aliphatic polycarboxylic acid-saturated higher fatty acid ester having 12 to 22 carbon atoms.

4. The resin composition according to claim 1, wherein the component (D) glycerin-polycarboxylic acid-fatty acid ester comprises glycerin-citric acid-saturated higher fatty acid ester having 12 to 22 carbon atoms.

5. 2. The resin composition according to claim 1, wherein the component (E) glycerin oxy fatty acid ester comprises glycerin 12-hydroxystearic acid ester.

6. A film comprising the resin composition according to any one of claims 1 to 5.

7. A decorative sheet comprising the film according to claim 6.

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