A kind of polystyrene-polyacrylate-polyurethane-unsaturated polyester copolymer and preparation method thereof

A polyacrylate and polystyrene technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of the performance of peelable protective materials, affecting the effect of film-forming materials, reducing curing shrinkage, etc. Effects of peelability, good film-forming shrinkage resistance, excellent flexibility

Active Publication Date: 2017-12-15
SHENZHEN GLITER PRINTING MATERIALS & EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When used, several film formers are usually blended and used. However, when different film formers play their own roles, they affect the effects of other film formers. Blending is used to achieve the purpose of modification, but it often improves its impact toughness and reduces curing shrinkage while reducing other mechanical properties, resulting in a decrease in the performance of the peelable protective material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Its preparation method is:

[0041] Step (1): Synthesis of Hydroxyl-Terminated Unsaturated Polyester

[0042] In a four-port reaction vessel with stirring and condensation, put in successively 90 parts of the mixture of tetrachlorophthalic acid and octadecanedioic acid (60 parts of tetrachlorophthalic acid, 30 parts of octadecanedioic acid), 30 parts of tetrachlorophthalic acid and octadecanedioic acid. A mixture of parts itaconic acid and hexachlorometamethylene phthalic anhydride (10 parts itaconic acid, 20 parts hexachlorometamethylene phthalic anhydride), 120 parts neopentyl glycol and dipropoxy The mixture of bisphenol A (50 parts of neopentyl glycol, 70 parts of di-propoxylated bisphenol A), 0.5 part of catalyst, 120 parts of NMP, nitrogen was passed through and stirred, and the temperature was slowly raised to 115 ° C, maintained for 2 hours, and then Gradually increase the temperature to 160°C and continue the reaction for 2.5h, until the acid value is close to...

Embodiment 2

[0050] Its preparation method is:

[0051] Step (1): Synthesis of Hydroxyl-Terminated Unsaturated Polyester

[0052]In a four-port reaction vessel with stirring and condensation, 70 parts of a mixture of tetrachlorophthalic acid and octadecanedioic acid (30 parts of tetrachlorophthalic acid, 40 parts of octadecanedioic acid), 50 parts A mixture of itaconic acid and hexachloromethylene phthalic anhydride (25 parts itaconic acid, 25 parts hexachloromethylene phthalic anhydride), 140 parts neopentyl glycol and dipropoxy Mixture of deoxidized bisphenol A (70 parts of neopentyl glycol, 80 parts of bis-propoxylated bisphenol A), 0.5 parts of catalyst, 180 parts of NMP, blow nitrogen and stir, slowly raise the temperature to 125 ° C, keep it for 2 hours and then Gradually raise the temperature to 170°C and continue the reaction for 2.5 hours until the acid value is close to or reaches 30mgKOH / g, continue to add neopentyl glycol, so that the amount of -OH is 1mol% more than the amoun...

Embodiment 3

[0060] A composition of peelable protective film, based on the total weight of the composition, comprising

[0061] a) polystyrene-polyacrylate-polyurethane-unsaturated polyester copolymer described in the application, accounting for 65wt%;

[0062] b) vinyl chloride-vinyl acetate-maleic acid copolymer, accounting for 10wt%; wherein, the content of vinyl acetate is 10%;

[0063] c) polyurethane acrylate elastomer, accounting for 10wt%;

[0064] d) plasticizer TXIB, accounting for 7wt%;

[0065] e) low molecular weight polyvinyl chloride emulsion polymerization powder, 5wt%

[0066] f) The rest are commonly used additives.

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Abstract

The present application relates to a polystyrene-polyacrylate-polyurethane-unsaturated polyester copolymer for peelable materials and a preparation method thereof. The copolymer has residues of (4-hydroxymethylcyclohexyl) methyl (meth)acrylate, and its number-average molecular weight is 5,000-70,000; the molecular weight distribution is below 3. The peelable protective material formed by adopting the polystyrene-polyacrylate-polyurethane-unsaturated polyester copolymer can realize rapid and integral peeling without any residue after peeling off, especially has remarkable shrinkage resistance and high temperature resistance, and No sticking, no fogging, strong chemical resistance.

Description

technical field [0001] The invention relates to a polystyrene-polyacrylate-polyurethane-unsaturated polyester copolymer and a preparation method, and belongs to the field of polymer synthesis. Background technique [0002] The peelable protective material is a temporary protective material. Unlike most common adhesives, inks and coatings, the peelable protective material not only protects the substrate, but also needs to have suitable adhesion to the protective base surface. And peelability, but also requires a certain degree of elasticity, strength and chemical resistance of the coating film. [0003] CN 103031025 A discloses a heat-curing non-solvent peelable blue glue for temporary protection of a touch screen and a preparation method. The formula of the peelable blue glue is composed of: 30-50 parts of chloroacetate resin, 10-30 parts of acrylate resin, 10-20 parts of oxygen resin, 20-30 parts of plasticizer, 0.1-1.0 part of thixotropic agent, and 0.1-1.0 part of pigmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C08F212/08C08F220/14C08G18/68C08G18/67C08G63/682C09D153/00C09D127/06C09D175/14C09D7/12C09D5/20
Inventor 邢槐泽张国慧
Owner SHENZHEN GLITER PRINTING MATERIALS & EQUIP
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