32results about How to "Excellent whitening resistance" patented technology

Disclosed is a propylene resin composition characterized by containing 0-80% by weight of a propylene polymer (A) having a melting point not less than 100 DEG C as measured by a differential scanning calorimeter, 5-85% by weight of a specific soft propylene copolymer (B), 0-40% by weight in total of one or more elastomers (C) selected from ethylene elastomers (C1) and styrene elastomers (C2), and 15-80% by weight of an inorganic filler (D). (In this connection, the total of the components (A), (B), (C) and (D) is 100% by weight.) This propylene resin composition contains an inorganic filler at a high ratio, and has excellent elongation at break, low temperature characteristics, whitening resistance, scratch resistance, wear resistance, stress absorption and flame retardance in addition to good flexibility.

A pressure-sensitive adhesive sheet having a supporting film, a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition on one surface of the supporting film, and a top coat layer on the other surface opposite to the surface having the pressure-sensitive adhesive layer of the supporting film, wherein the top coat layer contains wax as a lubricant and a polyester resin as a binder and having the properties as defined.

A pressure-sensitive adhesive sheet having a supporting film, a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition on one surface of the supporting film, and a top coat layer on the other surface opposite to the surface having the pressure-sensitive adhesive layer of the supporting film, wherein the top coat layer contains wax as a lubricant and a polyester resin as a binder and having the properties as defined.

An acrylic resin film material comprising at least a multilayer structure polymer with a particular structure prevent a molded item from being whitened during insert- or in-mold molding and meet the requirement for surface hardness, heat resistance, and transparency or matting performance for vehicle applications. It is also possible to use an acrylic resin film material exhibiting a difference of 30% or less between haze values as determined in accordance with the testing method of JIS K7136 (haze measurement method) after and before a tensile test where a test piece with a width of 20 mm is pulled under the conditions of an initial inter-chuck distance of 25 mm, a rate of 50 mm / min and a temperature of 23 DEG C. until an end-point inter-chuck distance becomes 33 mm as well as having a pencil hardness of 2 B or higher as determined in accordance with JIS K5400.

The invention relates to a synthesis method of an impact modifier butadiene, styrene and methyl methacrylate terpolymer for polyvinyl chloride resin. The method is to firstly prepare an emulsifier for styrene-butadiene polymerization, and adjust The solid content of the electrolyte and latex in the emulsifier is used to synthesize styrene-butadiene latex with an average particle size in the range of 80-280nm. The prepared styrene-butadiene latex is subjected to three-step graft polymerization, the first step is to graft styrene, and the second step is to graft Graft ethyl acrylate, three-step graft methyl methacrylate, control the cross-linking degree of styrene-butadiene latex during the polymerization of styrene-butadiene, reduce stress whitening, introduce grafting agent in the process of three-time graft polymerization, improve The coverage of the grafted monomer on the rubber surface, and finally after coagulation and drying, the MBS resin is obtained. The MBS resin synthesized by this method is used to modify PVC, which has good transparency and excellent resistance to stress whitening Performance and excellent impact resistance, and the polymerization reaction system is stable, making it possible to increase the solid content of styrene-butadiene latex.

The assignment for the present invention to solve is to provide a resin composition for UV-cured adhesive which has excellent step height conformability and adhesive whose level does not occur small scale exfoliation for base materials composed of various materials. In order to solve the assignment, the present invention provides the resin composition for UV-cured adhesive which comprises a urethane (meth)acrylate resin (A) which is obtained by making polyol (a) react with polyisocianate (b) and (meth)acyl compound (c) having a hydroxyl group. The equivalent of a (meth)acryloyl group of the urethane (meth)acrylate resin (A) is 8,000-17,000.

A propylene polymer satisfying (a) below, a soft propylene copolymer satisfying (b) below, and a polyolefin containing a structural unit derived from an unsaturated carboxylic acid and / or a derivative thereof, wherein (a) a melting point is 100° C. or more, and (b) an MFR is in the range of 0.01 to 100 g / 10 min, at least one of the following requirements (b-1) and (b-2) is satisfied: (b-1) a syndiotactic triad fraction s 60% or more, and (b-2) a structural unit derived from propylene is 55 to 90 mol % and a structural unit derived from at least one olefin having 2 to 20 carbon atoms (excluding propylene) is contained at 10 to 45 mol % (with provisos), and the relation between an intrinsic viscosity [η] (dL / g) and the MFR satisfies the relation: 1.50×MFR−0.20≤[η]≤2.65×MFR−0.20.

The object of the present invention is to provide a biaxially stretched polyester film that can suppress interference color when visually viewing a display when mounted on a display device such as a liquid crystal display, and provide dimensional stability and whitening resistance during heating. Excellent polyester film. As a method for solving the problem of the present invention, there is an optical polyester film having a retardation of 1500 nm or less, and the retardation is obtained by differential scanning calorimetry (DSC) at an angle at which the film surface is inclined by 50°. The heating heat of crystallization (ΔHc) is 15 J / g or less.

An acrylic resin film material comprising at least a multilayer structure polymer with a particular structure prevent a molded item from being whitened during insert- or in-mold molding and meet the requirement for surface hardness, heat resistance, and transparency or matting performance for vehicle applications. It is also possible to use an acrylic resin film material exhibiting a difference of 30% or less between haze values as determined in accordance with the testing method of JIS K7136 (haze measurement method) after and before a tensile test where a test piece with a width of 20 mm is pulled under the conditions of an initial inter-chuck distance of 25 mm, a rate of 50 mm / min and a temperature of 23 DEG C. until an end-point inter-chuck distance becomes 33 mm as well as having a pencil hardness of 2 B or higher as determined in accordance with JIS K5400.

One embodiment of the present invention pertains to a propylene-ethylene-alpha-olefin copolymer, a propylene polymer composition, an adhesive resin composition, a pellet, a molded article, a non-oriented film, a sheet, an injection molded article, a blow-molded article or a vehicle component. Said copolymer satisfies requirements (I)-(V): (I) the content of a propylene-derived constituent unit (i) is 50-92 mol%, the content of an ethylene-derived constituent unit (ii) is 5-20 mol% and the content of a C4-20 alpha-olefin-derived constituent unit (iii) is 3-30 mol% (the total of constituent units (i)-(iii) is 100 mol%); (II) the mm fraction calculated according to 13C-NMR is 85% or higher; (III) 0.9<=MOE / (2MO*ME)<=1.5 (wherein MOE is the mole fraction relative to all dyads of the total of the propylene-ethylene chains and the C4-20 alpha-olefin-ethylene chains, MO is the total of the mole fractions of the propylene and the C4-20 alpha-olefin, and ME is the mole fraction of the ethylene); (IV) the MFR is 1-3g / 10 minutes; (V) the melting point measured according to DSC is less than 100 DEG C or no melting peak is observed.

The disclosure relates to a thermoplastic transparent resin and a preparation method therefor. More specifically, the present invention relates to a thermoplastic transparent resin and a preparation method therefor, and has effects of providing: a thermoplastic transparent resin having no flow marks generated on the surface thereof, having excellent transparency, and having excellent whitening resistance and low temperature whitening resistance, thereby preventing cracks or whitening even during processing; a preparation method therefor; and the like.

The invention provides a water-based polyurethane-acrylate hybrid resin, a preparation method thereof, and an application in a leather finishing agent. The preparation method of the invention comprises: mixing and dissolving a diluting monomer and an isocyanate-terminated prepolymer, neutralizing After the reaction, high-speed shear dispersion is performed to obtain a pre-hybrid emulsion, and an initiator is added to the pre-hybrid emulsion to initiate polymerization; the isocyanate-terminated prepolymer is obtained by mixing and reacting diisocyanate, macromolecular polyol and chain extender. obtained; the macromolecular polyol includes at least one of polyether diol and polyester diol. The water-based polyurethane-acrylate hybrid resin prepared by the preparation method of the present invention not only has a simple and controllable preparation process, but also the leather finishing agent prepared from the above-mentioned water-based polyurethane-acrylate hybrid resin is suitable for the field of high-end leather finishing agents and has weather resistance It has the advantages of high performance, smooth hand feeling, good anti-sticking performance, good anti-blanking performance, good covering ability to fillers, high black transparency and good scratch resistance.

[Object] To provide a resin composition with excellent mold releasability and blocking resistance. [Solution] A resin composition containing a 4-methyl-1-pentene polymer includes 0.01 to 10 parts by mass of a 4-methyl-1-pentene polymer (B) per 100 parts by mass of at least one resin (A) selected from the group consisting of thermoplastic resins and thermosetting resins, wherein the 4-methyl-1-pentene polymer (B) has (B1) an intrinsic viscosity [·] of 0.01 or more but less than 0.50 dl / g measured at 135°C in a decalin solvent.