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Polymer and curable composition

A composition and polymer technology, applied in the direction of non-polymer organic compound adhesives, hydrocarbon copolymer adhesives, monocarboxylic acid ester copolymer adhesives, etc., can solve the limitations and sacrifice pressure-sensitive adhesives Agent performance and other issues

Inactive Publication Date: 2001-04-18
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mainly for synthetic reasons, such oligomers are limited to epoxy acrylates, urethane acrylates, polyester acrylates, etc., and few high molecular weight oligomers are available
[0018] Japanese Patent Laid-Open Publication Hei-2-60981 describes a method of thickening a composition which involves the addition of acryl rubber or epichlorohydrin rubber, but since the rubber thus added remains uncrosslinked in the pressure sensitive adhesive , so it is inevitable to sacrifice the performance of the pressure sensitive adhesive

Method used

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  • Polymer and curable composition
  • Polymer and curable composition
  • Polymer and curable composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0271] (embodiment 1) (synthetic potassium methacrylate)

[0272] Methanol (800 mL) cooled to 0°C was added to the flask. Potassium tert-butoxide (130 g) was added in portions. Keeping the mixture at 0°C, a methanol solution of methacrylic acid (100 g) was added dropwise. After the dropwise addition, the temperature of the reaction system was raised from 0°C to room temperature, and the volatile part in the reaction mixture was distilled off under reduced pressure, and potassium methacrylate of the following formula (hereinafter referred to as compound (1)], CH 2 =C(CH 3 )CO 2 K.

Embodiment 2

[0273] (embodiment 2) (synthetic potassium acrylate)

[0274] Methanol (500 mL) cooled to 0°C was added to the flask. Potassium tert-butoxide (78 g) was added portionwise. Keeping the mixture at 0°C, a solution of acrylic acid in methanol (50 g) was added dropwise. After the dropwise addition, the temperature of the reaction system was raised from 0°C to room temperature, and the volatile part in the reaction mixture was distilled off under reduced pressure, and potassium acrylate of the following formula [hereinafter referred to as compound (2)], CH 2 =CHCO 2 K.

Embodiment 3

[0275] (Example 3) (synthesis of poly(n-butyl acrylate) end-capped by methacryloyl group)

[0276] Using copper(I) bromide as catalyst, pentamethyldiethylenetriamine as ligand and diethyl 2,5-dibromoadipate as initiator, n-butyl acrylate was polymerized to obtain number average molecular weight A bromine-terminated n-butyl acrylate polymer of 10900 and a ratio of molecular weight distribution [Mw / Mn] = 1.12 (hereinafter referred to as polymer [1]). 20.0 g of the above polymer [1] was dissolved in N,N-dimethylacetamide followed by the addition of 1.46 g of compound (1), and the mixture was stirred at room temperature for 2 days. The reaction mixture was diluted with ethyl acetate (50 mL), and the insoluble portion was removed by filtration. The filtrate was further diluted with ethyl acetate (150 mL), washed with water and brine. use Na 2 SO 4 The organic layer was dried, and the volatile portion was distilled off under reduced pressure to obtain methacryloyl-terminated pol...

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Abstract

A vinyl polymer having at least one terminal group of the general formula (1) per molecule; -OC(O)C(R)=CH2 wherein R represents hydrogen or an organic group containing 1 to 20 carbon atoms; a curable composition containing said polymer; an aqueous emulsion containing either said polymer or said curable composition; a pressure sensitive adhesive composition and a pressure sensitive adhesive each comprising said curable composition or aqueous emulsion.

Description

technical field [0001] The present invention relates to a (meth)acryloyl-terminated vinyl polymer, curable compositions comprising said polymer and uses thereof. Background technique [0002] It is known that polymers containing terminal alkenyl groups are crosslinked by themselves or in the presence of a curing agent such as a hydrosilyl group-containing compound, resulting in highly heat-resistant and durable cured products. As the main chain of such polymers, there can be mentioned polyether polymers such as polyethylene oxide, polypropylene oxide, polytetrahydrofuran, etc.; hydrocarbon polymers such as polybutadiene, polyisoprene, Polychloroprene, polyisobutylene, etc., and their hydrogenated products; polyester polymers such as polyethylene terephthalate, polybutylene terephthalate, polycaprolactone, etc.; or polysilicon Oxanes such as polydimethylsiloxane, etc., these polymers have been used in various applications depending on the characteristics of their respective ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/48C08F8/00C08F8/14C08F299/00C09J4/02
CPCC08F2810/20C08F2810/30C08J3/28C08J2333/04C08F299/00C08F2810/40C08F8/14C08F8/26C08F120/18C08F8/06
Inventor 中川佳树藤田雅幸北野健一
Owner KANEKA CORP
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