Resin composition

Abstract

A resin composition according to an embodiment of the present invention comprises: a base resin; and a hydrogenated hydrocarbon resin, wherein the base resin comprises: a new graft copolymer including a rubbery polymer, aromatic vinyl-based monomer units, and vinyl cyan-based monomer units; a new non-graft copolymer including aromatic vinyl-based monomer units and vinyl cyan-based monomer units; and at least two kinds of eco-friendly materials, and the hydrogenated petroleum resin may be included in an amount of 0.4-15.5 parts by weight with respect to 100 parts by weight of the base resin.

Description

Resin composition

[0001] [Cross-reference with related applications]

[0002] This application claims the benefit of priority based on Korean patent application 10-2025-0011772 filed January 24, 2025, and all contents disclosed in the literature of said Korean patent applications are incorporated herein as part of this specification.

[0003]

[0004] [Technology Field]

[0005] The present invention relates to a resin composition and a resin composition comprising an eco-friendly material for appealing to eco-friendliness.

[0006] Acrylonitrile-butadiene-styrene (ABS) copolymers are manufactured by graft copolymerizing styrene and acrylonitrile onto a butadiene rubbery polymer. ABS copolymers possess a balanced combination of rigidity, chemical resistance, impact resistance, and processability. They also have excellent impact strength, mechanical properties, surface gloss, and secondary processing characteristics such as plating, printing, and painting, and have the advantage of enabling the production of products in various colors.

[0007] Meanwhile, as global concern for the environment intensifies, regulations aimed at curbing carbon dioxide emissions are being strengthened. In particular, as environmental pollution caused by the increased use of plastics containing ABS copolymers has recently emerged as a serious issue, more countries are adopting the Producer Responsibility (PR) recycling system as a global circular economy trend. Furthermore, regulations at the manufacturing stage are being tightened, such as mandating the use of recycled resins—led by the United States—and there is a growing trend toward introducing plastic taxes and carbon border taxes. Consequently, various methods for recycling waste plastics and introducing bio-materials are being explored. Accordingly, manufacturers are required to add a certain amount of recycled resin when producing resin molded products, and eco-friendliness ratings are assigned based on the recycled resin content.

[0008] However, since recycled resin is already processed, it contains additives such as colorants, lubricants, and release agents. Furthermore, as its properties have already changed due to the high-temperature processing, increasing the content of recycled resin inevitably leads to a deterioration in physical properties compared to conventional resin, particularly resulting in problems with reduced fluidity, impact resistance, and appearance quality.

[0009] [Prior Art Literature]

[0010] [Patent Literature]

[0011] (Patent Document 1) CN 110157131 A

[0012] The problem to be solved by the present invention is to provide a resin composition having excellent fluidity, impact resistance, and appearance quality.

[0013] Another problem to be solved by the present invention is to provide a resin composition that has excellent fluidity, impact resistance, and appearance quality, even when including eco-friendly materials such as recycled resin.

[0014] (1) The present invention provides a resin composition comprising a base resin; and a hydrogenated petroleum resin, wherein the base resin comprises: a rubbery polymer, a newly formed graft copolymer comprising aromatic vinyl monomer units and vinyl cyanide monomer units; a newly formed non-graft copolymer comprising aromatic vinyl monomer units and vinyl cyanide monomer units; and at least two of the following: an eco-friendly material, wherein the hydrogenated petroleum resin is included in an amount of 0.4 parts by weight or more and 15.5 parts by weight or less per 100 parts by weight of the base resin.

[0015] (2) The present invention provides a resin composition according to (1), wherein the hydrogenated petroleum resin is included in an amount of 0.5 parts by weight or more and 15 parts by weight or less per 100 parts by weight of the base resin.

[0016] (3) The present invention provides a resin composition in which, in (1) or (2), the conjugated diene polymer of the newly formed graft copolymer has an average particle size of 0.2 μm or more and 0.6 μm or less.

[0017] (4) The present invention provides a resin composition in which, in any one of (1) to (3), the new graft copolymer is included in an amount of 10 parts by weight or more and 40 parts by weight or less per 100 parts by weight of the base resin, when the eco-friendly material is not included in the base resin.

[0018] (5) The present invention provides a resin composition in which, in any one of (1) to (4), the new non-graft copolymer is included in an amount of 50 parts by weight or more and 90 parts by weight or less per 100 parts by weight of the base resin, when the eco-friendly material is not included in the base resin.

[0019] (6) The present invention provides a resin composition in which, in any one of (1) to (5), the base resin comprises the eco-friendly material.

[0020] (7) The present invention provides a resin composition in which, in any one of (1) to (6), the eco-friendly material comprises one or more selected from the group consisting of recycled resin, seashell, and biodegradable resin.

[0021] (8) The present invention provides a resin composition in which, in any one of (1) to (7), the recycled resin comprises a conjugated diene monomer unit, an aromatic vinyl monomer unit and / or a vinyl cyanide monomer unit.

[0022] (9) The present invention provides a resin composition in which, in any one of (1) to (8), the new graft copolymer is included in an amount of 50 parts by weight or less and the new non-graft copolymer is included in an amount of 90 parts by weight or less and the eco-friendly material is included in an amount of 1 part by weight or more and 95 parts by weight or less, for every 100 parts by weight of the base resin.

[0023] A resin composition according to one embodiment of the present invention has excellent fluidity, impact resistance, and appearance quality.

[0024] A resin composition according to another embodiment of the present invention has excellent fluidity, impact resistance, and appearance quality, even when including eco-friendly materials such as recycled resin.

[0025] Hereinafter, the present invention will be described in more detail to aid in understanding the invention. In this case, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0026] In the present invention, the term 'monomer unit' may refer to a component, structure, or the material itself derived from a monomer, and as a specific example, may refer to a repeating unit formed within a polymer by a monomer introduced during the polymerization of a polymer and participating in the polymerization reaction.

[0027] In the present invention, the 'weight-average molecular weight' is generally measured by gel permeation chromatography (GPC). For example, after dissolving the sample to be measured in a THF (tetrahydrofuran) solution, it can be measured as a relative value to a standard sample (PS, standard polystyrene) through gel permeation chromatography (GPC).

[0028] The term 'composition' as used in the present invention includes reaction products and decomposition products formed from the materials of the said composition, as well as mixtures of materials containing said composition.

[0029] In the present invention, 'average particle size' may refer to the arithmetic mean particle size in a particle size distribution measured by dynamic light scattering, specifically the scattering intensity average particle size. The average particle size of a conjugated diene polymer can be measured using a Nicomp 380 instrument (product name, manufacturer: PSS Nicomp).

[0030]

[0031] <Resin Composition>

[0032] The present invention provides a resin composition.

[0033] A resin composition according to one embodiment of the present invention comprises at least a base resin and a hydrogenated petroleum resin, wherein the base resin comprises at least two of: a newly formed graft copolymer comprising a conjugated diene polymer, an aromatic vinyl monomer unit, and a vinyl cyanide monomer unit; a newly formed non-graft copolymer comprising an aromatic vinyl monomer unit and a vinyl cyanide monomer unit; and an eco-friendly material, and the hydrogenated petroleum resin is included in an amount of 0.4 parts by weight or more and 15.5 parts by weight or less per 100 parts by weight of the base resin.

[0034]

[0035] The inventors have discovered that when an appropriate amount of hydrogenated petroleum resin is added to a base resin containing the new graft copolymer and / or the new non-graft copolymer, the fluidity, impact resistance, and appearance quality are all excellent, and in particular, even when environmentally friendly materials such as recycled resin are included, the fluidity, impact resistance, and appearance quality are all excellent, and thus have completed the present invention.

[0036]

[0037] A resin composition according to one embodiment of the present invention may have a flow index of 20 g / 10 min or higher as measured according to ASTM D1238 under conditions of 220°C and 10 kg, and specifically, as an example, may be 21 g / 10 min or higher, 22 g / 10 min or higher, 23 g / 10 min or higher, 24 g / 10 min or higher, or 25 g / 10 min or higher. In the present invention, the fluidity of the resin composition is evaluated as excellent when the flow index satisfies the above-described range.

[0038] A resin composition according to one embodiment of the present invention may have a notched Izod impact strength of 20 kg·cm / cm or more as measured according to ASTM D 256 on a 1 / 4 inch thick specimen at 23°C, and a face impact strength of 40 J or more as measured according to ISO 6603-2. As a specific example, the resin composition may have a notched Izod impact strength of 21 kg·cm / cm or more, 22 kg·cm / cm or more, 23 kg·cm / cm or more, 24 kg·cm / cm or more, or 25 kg·cm / cm or more, and may also have a face impact strength of 41 J or more, 42 J or more, 43 J or more, 44 J or more, or 45 J or more. In the present invention, the impact strength is evaluated as excellent when the notched Izod impact strength and face impact strength of the resin composition satisfy the above-described ranges.

[0039]

[0040] The following describes in detail each component constituting the resin composition according to one embodiment of the present invention.

[0041]

[0042] 1. Base Resin

[0043] A resin composition according to one embodiment of the present invention may include a base resin. The base resin may include at least two types of a new graft copolymer, a new non-graft copolymer, and an eco-friendly material.

[0044] Specifically, a base resin according to one embodiment of the present invention may include the new graft copolymer, the new non-graft copolymer, and the eco-friendly material, or include the new graft copolymer and the new non-graft copolymer, or include the new graft copolymer and the eco-friendly material, or include the new non-graft copolymer and the eco-friendly material.

[0045]

[0046] According to one embodiment of the present invention, the new graft copolymer is a graft copolymer that has never been used before and is a component that improves the impact resistance of the resin composition.

[0047] According to one embodiment of the present invention, the newly formed graft copolymer may be a rubber polymer comprising a conjugated diene polymer comprising conjugated diene monomer units and a graft polymer comprising a shell comprising aromatic vinyl monomer units and vinyl cyanide monomer units grafted onto the conjugated diene polymer. The shell may include aromatic vinyl monomer units and vinyl cyanide monomer units that are not grafted onto the conjugated diene polymer.

[0048] According to one embodiment of the present invention, the conjugated diene monomer for forming the conjugated diene monomer unit included in the new graft copolymer may be one or more selected from the group consisting of 1,3-butadiene, isoprene, chloroprene, and piperylene, and as a specific example, it may be 1,3-butadiene.

[0049] According to one embodiment of the present invention, the rubbery polymer of the newly formed graft copolymer may be an acrylic polymer comprising acrylic monomer units, and may be a graft polymer comprising a shell comprising aromatic vinyl monomer units and vinyl cyanide monomer units grafted onto the acrylic polymer. The shell may include aromatic vinyl monomer units and vinyl cyanide monomer units that are not grafted onto the acrylic polymer.

[0050] According to one embodiment of the present invention, the acrylic monomer for forming the acrylic monomer unit of the acrylic polymer is C4 to C 10It may be an alkyl (meth)acrylate-based monomer, and specifically examples may be one or more selected from the group consisting of butyl (meth)acrylate, pentyl (meth)acrylate, hexyl (meth)acrylate, heptyl (meth)acrylate, octyl (meth)acrylate, ethylhexyl (meth)acrylate, nonyl (meth)acrylate, isononyl (meth)acrylate, and decyl (meth)acrylate, and more specifically, butyl acrylate.

[0051] According to one embodiment of the present invention, the conjugated diene polymer included in the newly formed graft copolymer has an average particle size (D) of 0.2 μm or more and 0.6 μm or less. 50 It may have an average particle size (D) of 0.22㎛ or more, 0.24㎛ or more, 0.26㎛ or more, 0.28㎛ or more, or 0.3㎛ or more. 50 It may have ), and also an average particle size (D) of 0.58㎛ or less, 0.56㎛ or less, 0.54㎛ or less, 0.52㎛ or less, or 0.5㎛ or less. 50 Can have ).

[0052] According to one embodiment of the present invention, the aromatic vinyl monomer for forming the aromatic vinyl monomer unit included in the new graft copolymer may be one or more selected from the group consisting of α-methyl styrene, α-ethyl styrene, p-methyl styrene, 2,4-dimethyl styrene, styrene, p-fluorostyrene, p-chlorostyrene, and p-bromostyrene, and as a specific example, it may be styrene.

[0053] According to one embodiment of the present invention, the vinyl cyanide monomer for forming the vinyl cyanide monomer unit included in the new graft copolymer may be one or more selected from the group consisting of acrylonitrile, methacrylonitrile, (Z)-3-phenylacrylonitrile and α-chloroacrylonitrile, and as a specific example, it may be acrylonitrile.

[0054] According to one embodiment of the present invention, the content of the conjugated diene polymer included in the new graft copolymer may be 40 to 80 weight%, preferably 50 to 70 weight%. If the above conditions are satisfied, the impact resistance of the new graft polymer composition may be further improved.

[0055] According to one embodiment of the present invention, the content of aromatic vinyl monomer units included in the new graft copolymer may be 10 to 50 weight%, preferably 20 to 40 weight%. If the above conditions are satisfied, the processability of the new graft copolymer may be further improved.

[0056] According to one embodiment of the present invention, the content of vinyl cyanide monomer units included in the new graft copolymer may be 1 to 30 weight%, preferably 5 to 25 weight%. If the above conditions are satisfied, the chemical resistance of the new graft polymer composition may be further improved.

[0057]

[0058] According to one embodiment of the present invention, the resin composition may comprise a single type of newly formed graft copolymer or different types of newly formed graft copolymers. For example, the resin composition may comprise newly formed graft copolymers with different average particle sizes.

[0059]

[0060] According to one embodiment of the present invention, the new non-graft copolymer is a non-graft copolymer that has never been used before and is a component that improves the tensile strength and processability of a resin composition.

[0061] According to one embodiment of the present invention, the newly formed non-grafted copolymer is a non-grafted copolymer and may include aromatic vinyl monomer units and vinyl cyanide monomer units.

[0062] According to one embodiment of the present invention, the aromatic vinyl monomer for forming the aromatic vinyl monomer unit included in the new non-graft copolymer may be one or more selected from the group consisting of α-methyl styrene, α-ethyl styrene, p-methyl styrene, 2,4-dimethyl styrene, styrene, p-fluorostyrene, p-chlorostyrene, and p-bromostyrene, and as a specific example, it may be styrene.

[0063] According to one embodiment of the present invention, the vinyl cyanide monomer for forming the vinyl cyanide monomer unit included in the new non-graft copolymer may be one or more selected from the group consisting of acrylonitrile, methacrylonitrile, (Z)-3-phenylacrylonitrile and α-chloroacrylonitrile, and as a specific example, it may be acrylonitrile.

[0064] According to one embodiment of the present invention, the content of aromatic vinyl monomer units included in the new non-graft copolymer may be 60 to 90 weight%, preferably 65 to 85 weight%. If the above conditions are satisfied, the processability of the new graft copolymer may be further improved.

[0065] According to one embodiment of the present invention, the content of vinyl cyanide monomer units included in the new non-graft copolymer may be 10 to 40 weight%, preferably 15 to 40 weight%. If the above conditions are satisfied, the chemical resistance of the new graft copolymer may be further improved.

[0066]

[0067] According to one embodiment of the present invention, the eco-friendly material is intended to appeal to eco-friendliness when included in a resin composition and may include one or more selected from the group consisting of recycled resin, seashell, and biodegradable resin, and as a specific example, may include recycled resin and / or biodegradable resin. In this case, the reduction in mechanical properties of the resin composition containing the eco-friendly material may be further mitigated.

[0068] According to one embodiment of the present invention, the recycled resin is a component included to enable the resin composition to be certified as an eco-friendly product, and is a recycled product obtained by processing and reusing already used resin or resin waste. Specifically, the recycled resin may refer to resin waste that has been collected, crushed, washed, separated, sorted, and then processed for reuse according to its intended use. The form of the recycled resin is not particularly limited.

[0069] According to one embodiment of the present invention, the recycled resin may be one or more selected from the group consisting of recycled polyethylene, recycled polypropylene, recycled polyester, recycled polystyrene, recycled polyamide, recycled polycarbonate, recycled diene-based graft polymer, and recycled vinyl-based non-graft polymer.

[0070] According to one embodiment of the present invention, the recycled resin may comprise a conjugated diene monomer unit, a vinyl cyanide monomer unit, and / or an aromatic vinyl monomer unit. The conjugated diene monomer unit can improve the impact resistance of the recycled resin. The vinyl cyanide monomer unit can improve the chemical resistance of the recycled resin. In addition, the aromatic vinyl monomer unit can improve the processability of the recycled resin.

[0071] According to one embodiment of the present invention, when the regenerated resin includes a conjugated diene monomer unit, the conjugated diene monomer for forming the conjugated diene monomer unit may be one or more selected from the group consisting of 1,3-butadiene, isoprene, chloroprene, and piperylene, and as a specific example, it may be 1,3-butadiene.

[0072] According to one embodiment of the present invention, when the recycled resin includes an aromatic vinyl monomer unit, the aromatic vinyl monomer for forming the aromatic vinyl monomer unit may be one or more selected from the group consisting of α-methyl styrene, α-ethyl styrene, p-methyl styrene, 2,4-dimethyl styrene, styrene, p-fluorostyrene, p-chlorostyrene, and p-bromostyrene, and as a specific example, it may be styrene.

[0073] According to one embodiment of the present invention, when a vinyl cyanide monomer unit is included in the recycled resin, the vinyl cyanide monomer for forming the vinyl cyanide monomer unit may be one or more selected from the group consisting of acrylonitrile, methacrylonitrile, (Z)-3-phenylacrylonitrile and α-chloroacrylonitrile, and as a specific example, it may be acrylonitrile.

[0074] According to one embodiment of the present invention, the shell may be a material in which discarded shell waste is crushed and added, as a component included to allow the resin composition to be certified as an eco-friendly product.

[0075] According to one embodiment of the present invention, the biodegradable resin is a component included to enable the resin composition to be certified as an eco-friendly product, and is a resin that maintains its function and structure while in use but decomposes into water and carbon dioxide by microorganisms once discarded.

[0076] According to one embodiment of the present invention, the biodegradable resin may include one or more selected from the group consisting of polylactic acid (PLA), polycaprolactone (PCL), polyphosphate ester, polyphosphazene, polyhydrolybutyrate (PHB), and polysaccharides.

[0077]

[0078] A resin composition according to one embodiment of the present invention may not include the above-mentioned eco-friendly material. In this case, the base resin will include the above-mentioned new graft resin and the new non-graft resin.

[0079] When the resin composition according to one embodiment of the present invention does not include the eco-friendly material, the resin composition may include the new graft resin in an amount of 10 parts by weight or more and 50 parts by weight or less per 100 parts by weight of the base resin, and as a specific example, it may include 12 parts by weight or more, 14 parts by weight or more, 16 parts by weight or more, 18 parts by weight or more, or 20 parts by weight or more, and may also include 48 parts by weight or less, 46 parts by weight or less, 44 parts by weight or less, 42 parts by weight or less, or 40 parts by weight or less. When the above-described ranges are satisfied, the mechanical properties of the resin composition may be improved.

[0080] When the resin composition according to one embodiment of the present invention does not include the eco-friendly material, the resin composition may include the newly formed non-grafted resin in an amount of 50 parts by weight or more and 90 parts by weight or less per 100 parts by weight of the base resin, and as a specific example, may include 52 parts by weight or more, 54 parts by weight or more, 56 parts by weight or more, 58 parts by weight or more, or 60 parts by weight or more, and may also include 88 parts by weight or less, 86 parts by weight or less, 84 parts by weight or less, 82 parts by weight or less, or 80 parts by weight or less. When the above-described ranges are satisfied, the mechanical properties of the resin composition may be improved.

[0081]

[0082] A resin composition according to one embodiment of the present invention may include the eco-friendly material. In this case, the base resin may include the new graft resin, the new non-graft resin, and the eco-friendly material, or the new graft resin and the eco-friendly material, or the new non-graft resin and the eco-friendly material.

[0083] When a resin composition according to one embodiment of the present invention includes the eco-friendly material, the resin composition may include the newly formed graft resin in an amount of 50 parts by weight or less per 100 parts by weight of the base resin. Specifically, it may include 0 parts by weight or more, 5 parts by weight or more, 10 parts by weight or more, 15 parts by weight or more, or 20 parts by weight or more, and may also include 48 parts by weight or less, 46 parts by weight or less, 44 parts by weight or less, 42 parts by weight or less, or 40 parts by weight or less. When the above-described ranges are satisfied, the mechanical properties of the resin composition may be improved.

[0084] When a resin composition according to one embodiment of the present invention includes the eco-friendly material, the resin composition may include the newly formed non-grafted resin in an amount of 90 parts by weight or less per 100 parts by weight of the base resin. Specifically, it may include 0 parts by weight or more, 10 parts by weight or more, 20 parts by weight or more, 30 parts by weight or more, or 40 parts by weight or more, and may also include 88 parts by weight or less, 86 parts by weight or less, 84 parts by weight or less, 82 parts by weight or less, or 80 parts by weight or less. When the above-described ranges are satisfied, the mechanical properties of the resin composition may be improved.

[0085] According to one embodiment of the present invention, when the resin composition includes the eco-friendly material, the resin composition may include the eco-friendly material in an amount of 1 part by weight or more and 95 parts by weight or less per 100 parts by weight of the base resin, and as a specific example, may include 2 parts by weight or more, 4 parts by weight or more, 6 parts by weight or more, 8 parts by weight or more, or 10 parts by weight or more, and may also include 90 parts by weight or less, 80 parts by weight or less, 70 parts by weight or less, 60 parts by weight or less, 50 parts by weight or less, or 40 parts by weight or less.

[0086]

[0087] 2. Hydrogenated petroleum resin

[0088] A resin composition according to one embodiment of the present invention may include hydrogenated petroleum resin to improve fluidity and impact resistance. In particular, when the eco-friendly material is included in the resin composition, the fluidity and impact resistance of the resin composition are reduced by the eco-friendly material; therefore, hydrogenated petroleum resin may be included to compensate for this. The hydrogenated petroleum resin is a compound with a low molecular weight, and when applied to the resin composition, fluidity is improved. Furthermore, since adhesive properties are exhibited at temperatures above the glass transition temperature, the bonding strength with the matrix copolymer is enhanced, thereby improving impact resistance.

[0089] In the present invention, the term "petroleum resin" refers to a polymer polymerized using by-products generated during the naphtha cracking process as raw materials, specifically referring to a resin polymerized from C5 monomers, C9 monomers, and / or dicyclopentadiene (DCPD).

[0090] According to one embodiment of the present invention, the C5 monomer may be one or more selected from the group consisting of isoprene, piperylene, cyclopentadiene, 1-pentene, 2-methyl-2-butene and n-pentane as aliphatic monomers, and the C9 monomer may be one or more selected from the group consisting of styrene, vinyltoluene, indene, alpha-methylstyrene and benzene / toluene / xylene (BTX).

[0091] In the present invention, the terms 'hydrogenation' or 'hydrogenation reaction' refer to a reaction that converts unsaturated bonds, such as double bonds, into single bonds by adding hydrogen.

[0092] In the present invention, the term 'hydrogenated petroleum resin' refers to a resin obtained by performing a hydrogenation reaction, that is, a hydrogenation reaction, on the petroleum resin, and specifically, means that the content of double bonds in the total bonds is less than 7%, and more specifically, means that the content of double bonds in the total bonds is less than 5%.

[0093] According to one embodiment of the present invention, the hydrogenated petroleum resin may have a softening point of 110°C or higher, and specifically, as an example, 112°C or higher, 114°C or higher, 116°C or higher, 118°C or higher, or 120°C or higher. When the above-described range is satisfied, adhesive properties are not exhibited under the temperature conditions applied to the extrusion of the resin composition, so the mechanical properties (e.g., impact strength, etc.) of the resin composition being manufactured may not be reduced.

[0094] A resin composition according to one embodiment of the present invention may include the hydrogenated petroleum resin in an amount of 0.4 parts by weight or more and 15.5 parts by weight or less per 100 parts by weight of the base resin. Specifically, it may include 0.42 parts by weight or more, 0.44 parts by weight or more, 0.46 parts by weight or more, 0.48 parts by weight or more, or 0.5 parts by weight or more, and may also include 15.4 parts by weight or less, 15.3 parts by weight or less, 15.2 parts by weight or less, 15.1 parts by weight or less, or 15 parts by weight or less. When the above-described ranges are satisfied, the fluidity, impact resistance, and appearance quality of the resin composition are all excellent, and in particular, even if eco-friendly materials such as recycled resin are included, the fluidity, impact resistance, and appearance quality may all be excellent. If the hydrogenated petroleum resin is included in an amount less than the above-described range, fluidity and impact resistance may be reduced. In addition, if the above-mentioned hydrogenated petroleum resin is included in an amount exceeding the specified range, the appearance quality may be degraded.

[0095]

[0096] 3. Other additives

[0097] According to one embodiment of the present invention, the resin composition may further include other additives. The additives may be one or more selected from the group consisting of lubricants, antioxidants, light stabilizers, hydrolysis stabilizers, release agents, pigments, antistatic agents, conductivity imparters, electromagnetic shielding agents, magnetizing agents, mineral fillers, crosslinking agents, antibacterial agents, processing aids, metal deactivators, flame suppressants, anti-friction and anti-wear agents, and coupling agents.

[0098] The above additives may be used without limitation as long as they are used in the technical field of the present invention, and a person skilled in the art may select the additives included in the present invention according to the purpose.

[0099]

[0100] Molded product

[0101] The present invention provides a molded article comprising the resin composition. For example, the molded article can be applied to various industrial fields, such as various electrical and electronic products and automotive parts. As a molding method, general molding methods such as extrusion, injection, and casting may be applied.

[0102]

[0103] Hereinafter, embodiments of the present invention are described in detail so that those skilled in the art can easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0104]

[0105] Examples and Comparative Examples

[0106] The ingredients listed below were added in the amounts listed in Tables 1 and 2 below, and the mixture was melted and mixed at 230°C to produce pellets.

[0107]

[0108] (A-1) New ABS Graft Copolymer: Manufactured by LG Chem, Product Name DP270M

[0109]

[0110] (A-2) New ASA Graft Copolymer: Manufactured by LG Chem, Product Name SA927

[0111]

[0112] (A-3) New SAN non-graft copolymer: Manufactured by LG Chem, Product name 92HR

[0113]

[0114] (B-1) Recycled ABS Graft Copolymer: Manufactured by Daiel Resin Industry Co., Ltd., Product Name ALG1014

[0115]

[0116] (B-2) Regenerated SAN non-graft copolymer: Manufactured by Pingyuan Co., Ltd., Product name RAS-2010M2

[0117]

[0118] (B-3) Biodegradable resin: Manufactured by Newlight Technologies, Product name ACC131

[0119]

[0120] (B-4) Minerals: Manufactured by EcoShell, seashells

[0121]

[0122] (C-1) Hydrogenated DCPD (dicyclopentadiene) resin: Manufactured by Kolon Industries, Product name SUKOREZ SU-640 (Softening point: 140℃)

[0123]

[0124] (C-2) Hydrogenated DCPD-C9 Resin: Manufactured by Kolon Industries, Product Name SUKOREZ SU-420 (Softening Point: 120℃)

[0125]

[0126] Experimental Example

[0127] Each of the pellets prepared in the above examples and comparative examples was injected at an injection temperature of 230°C and a mold temperature of 60°C to produce specimens, and physical properties were measured in the following manner.

[0128]

[0129] * Melt Index (MI; g / 10min): The melt index measured according to ASTM D1238 under conditions of 220℃ and 10 kg is shown in Tables 1 and 2 below. In the present invention, a melt index of 20 g / 10min or higher was evaluated as excellent.

[0130]

[0131] * Izod impact strength (kg·cm / cm): Notched Izod impact strength measured according to ASTM D 256 for 1 / 4 inch thick specimens at 23℃ is shown in Tables 1 and 2 below. In the present invention, Izod impact strength was evaluated as excellent when it was 20 kg·cm / cm or higher.

[0132]

[0133] * Face impact strength (J): The face impact strength measured according to ISO 6603-2 for a 2 mm thick specimen at 23℃ is shown in Tables 1 and 2 below. In the present invention, a face impact strength of 40J or higher was evaluated as excellent.

[0134]

[0135] * Appearance quality: The above specimen was scratched with a knife and folded, and the condition of the folded surface was evaluated visually. If no delamination occurred on the folded surface of the specimen, it was evaluated as '○'; if delamination occurred on the folded surface when a separate force was applied after scratching the specimen with a knife and folding it, it was evaluated as '△'; and if delamination occurred on the folded surface even without a separate force being applied after scratching the specimen with a knife and folding it, it was evaluated as 'X'.

[0136]

[0137] Example 1 2 3 4 5 6 7 8 9 10 Base Resin New Graft Copolymer (Type) A-1 A-1 A-1 A-1 A-1 A-1 A-1 A-1 A-1 A-1 A-2 (Parts by weight) 27 27 27 27 27 27 27 27 27 27 27 3 New Non-Graft Copolymer (Parts by weight) 73 73 73 73 5 23 70 66 7 37 3 Eco-friendly Material (Type) ---- B-1 B-2 B-3 B-4 (Parts by weight) ---- 95 50 3 12 Hydrogenated Petroleum Resin (Type) C-1 C-1 C-2 C-2 C-2 C-2 C-2 C-2 C-1 C-1 (Parts by weight) 0.5 15 0.5 15 15 15 15 15 10 15 Flow Index (g / 10 min) 20 25 21 25 26 27 30 22 23 24 Izod Impact Strength (kg·cm / cm) 25 3 1 25 3 2 20 23 3 3 20 27 24 Surface Impact Strength (J) 45 7 5 4 4 7 6 40 45 45 40 6 15 2 Appearance Quality ○○○○○○○○○○

[0138]

[0139]

[0140] Comparative Example 12 34567 Base Resin New Graft Copolymer (A-1) (parts by weight) 27272727-2722 New Graft Copolymer (parts by weight) 7373737357066 Eco-friendly Material (Type) ---- B-1 B-3 B-4 (parts by weight) ---- 95312 Hydrogenated Petroleum Resin (Type) C-1 C-1 C-2 C-2 (parts by weight) 0.316 0.316--- Flow Index (g / 10min) 19271928212317 Izod Impact Strength (kg·cm / cm) 23312332132112 Surface Impact Strength (J) 37533852173019 Appearance Quality ○X○X○○○

[0141]

[0142] Referring to Tables 1 and 2 above, it was confirmed that in the case of Examples 1 to 8, which contain a desirable amount of hydrogenated hydrocarbon resin in the resin composition, the flow index, Izod impact strength, face impact strength, and appearance quality were all excellent.

[0143] In particular, when an eco-friendly material for eco-friendly consumption is included, as in Comparative Examples 5 to 7, it can generally be observed that the Izod impact strength and surface impact strength of the resin composition decrease. On the other hand, in the case of Examples 5 to 8, despite the inclusion of an eco-friendly material for eco-friendly consumption as in Comparative Examples 5 to 7, it was confirmed that the flow index, Izod impact strength, surface impact strength, and appearance quality were all excellent.

[0144]

[0145] In the case of Comparative Examples 1 and 3, in which hydrogenated petroleum resin is included in an amount less than the desirable content range, it was confirmed that the flow index and surface impact strength decreased.

[0146]

[0147] In the case of Comparative Examples 2 and 4, in which hydrogenated petroleum resin was included in excess of the desired content range, it was confirmed that the appearance quality deteriorated.

Claims

1. Base resin; and It includes hydrogenated petroleum resin, The above base resin is: A newly formed graft copolymer comprising a rubbery polymer, aromatic vinyl monomer units, and vinyl cyanide monomer units; A newly formed non-graft copolymer comprising aromatic vinyl monomer units and vinyl cyanide monomer units; and Eco-friendly materials; including at least two types, A resin composition comprising the above hydrogenated petroleum resin in an amount of 0.4 parts by weight or more and 15.5 parts by weight or less per 100 parts by weight of the base resin.

2. In Paragraph 1, A resin composition in which the above hydrogenated petroleum resin is included in an amount of 0.5 parts by weight or more and 15 parts by weight or less per 100 parts by weight of the above base resin.

3. In Paragraph 1, A resin composition in which the conjugated diene polymer of the above-mentioned newly formed graft copolymer has an average particle size of 0.2 μm or more and 0.6 μm or less.

4. In Paragraph 1, If the above-mentioned base resin does not contain the above-mentioned eco-friendly material, A resin composition comprising the above-mentioned newly formed graft copolymer in an amount of 10 parts by weight or more and 40 parts by weight or less per 100 parts by weight of the base resin.

5. In Paragraph 1, If the above-mentioned base resin does not contain the above-mentioned eco-friendly material, A resin composition comprising the above-mentioned newly formed non-graft copolymer in an amount of 50 parts by weight or more and 90 parts by weight or less per 100 parts by weight of the base resin.

6. In Paragraph 1, The above base resin is a resin composition comprising the above eco-friendly material.

7. In Paragraph 6, The above-mentioned eco-friendly material is a resin composition comprising one or more selected from the group consisting of recycled resin, seashell, and biodegradable resin.

8. In Paragraph 7, The above recycled resin is a resin composition comprising conjugated diene monomer units, aromatic vinyl monomer units and / or vinyl cyanide monomer units.

9. In Paragraph 6, With respect to 100 parts by weight of the above base resin The above-mentioned newly formed graft copolymer is included in an amount of 50 parts by weight or less, and The above-mentioned newly formed non-graft copolymer is included in an amount of 90 parts by weight or less, and A resin composition comprising 1 part by weight or more and 95 parts by weight or less of the above-mentioned eco-friendly material.