Adhesives based on polyester graft poly(meth)acrylate copolymers

A graft copolymer, acrylate technology, used in ester copolymer adhesives, graft polymer adhesives, polyurea/polyurethane adhesives, etc., can solve the problem of expensive alkyl acrylate polymerization and processing, etc. question

Inactive Publication Date: 2009-03-18
EVONIK DEGUSSA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymerization and processing of narrowly distributed polyalkyl(meth)acrylates is very expensive

Method used

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  • Adhesives based on polyester graft poly(meth)acrylate copolymers
  • Adhesives based on polyester graft poly(meth)acrylate copolymers
  • Adhesives based on polyester graft poly(meth)acrylate copolymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102]Isophthalic acid (453g, 2.73mol); terephthalic acid (216g, 1.30mol), monoethylene glycol (130g, 2.1mol), neopentyl glycol (190g, 1.83mol) and 1,6-hexane Diol (154 g, 1.31 mol) was melted in a 21-flask with distillation column and distillation head under nitrogen flow. Water started to distill off when the temperature of 180°C was reached. The temperature was continuously increased to 240°C over a period of two hours. After about another four hours at this temperature the water slowly separates. The temperature dropped to 215°C. Then itaconic acid (40 g, 0.31 mol) and 100 mg MEHQ were stirred in for one hour. Then 300 mg of Tegokat 129 were stirred in and the workup was continued under vacuum, which was adjusted during the course of the reaction so that a distillate continued to form. The reaction is terminated after reaching the desired hydroxyl number and acid number ranges. The properties of Polyester 1 are shown in Table 1.

Embodiment 2

[0104] Adipic acid (577 g, 3.95 mol); itaconic acid (39 g, 0.30 mol), 1,6-hexanediol (546 g, 4.63 mol) and 100 mg MEHQ were placed in a 21-flask with distillation column and distillation head Melt in a stream of nitrogen. Water started to distill off when a temperature of 160°C was reached. The temperature was continuously raised to 215°C over two hours. After about another three hours at this temperature the water slowly separates. Then 300 mg of Tegokat 129 were stirred in and the workup was continued under vacuum, which was adjusted during the course of the reaction so that a distillate continued to form. The reaction is terminated after reaching the desired hydroxyl number and acid number ranges. The properties of Polyester 2 are shown in Table 1.

Embodiment 3

[0106] Isophthalic acid (464g, 2.80mol); terephthalic acid (221g, 1.33mol), monoethylene glycol (127g, 2.05mol), neopentyl glycol (186g, 1.78mol) and 1,6-hexane Diol (150 g, 1.27 mol) was melted in a 2 1 -flask with distillation column and distillation head under nitrogen flow. Water started to distill off when 185°C was reached. The temperature was continuously raised to 245°C over two hours. After about another four hours at this temperature the water slowly separates. The temperature dropped to 215°C. Then itaconic acid (41 g, 0.31 mol) and 500 mg MEHQ were stirred in for one hour. Then 300 mg of Tegokat 129 were stirred in and the workup was continued under vacuum, which was adjusted during the course of the reaction so that a distillate continued to form. The reaction is terminated after reaching the desired hydroxyl number and acid number ranges. The properties of Polyester 3 are listed in Table 1.

[0107] Table 1: Properties of Polymer Type A

[0108] E...

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Abstract

The invention relates to an adhesives based on polyester graft poly(meth)acrylate copolymers. Specifically, the invention relates to the use of mixtures comprising polymer types A, B and AB as adhesives or in adhesives, where the polymer type A is a co-polyester, which is manufactured under co-condensation of unsaturated, aliphatic dicarboxylic acids, the polymer type B is (meth)acrylate homo- and/or -copolymer and the polymer type AB is a grafting copolymer made from the polymer type A and polymer type B, is claimed.

Description

technical field [0001] The present invention relates to the use as or in adhesives of a mixture containing polymers of type A, B and AB, wherein the polymer of type A is a copolyester composed of unsaturated aliphatic Prepared by co-condensation of dicarboxylic acids, type B polymers are (meth)acrylate homopolymers and / or copolymers, and type AB polymers are graft copolymers made of type A polymers and type B polymers things. Background technique [0002] Reactive hotmelt adhesives are solid substances at room temperature. They are melted by heating and applied to the substrates to be joined. On cooling the adhesive solidifies again and thus bonds the substrate. In addition, the polymers contained in the adhesive are crosslinked by reaction with moisture, thereby undergoing a final, irreversible cure. [0003] For many applications, such as surface coating for the production of sandwich construction elements, it is necessary for reactive hotmelt adhesives to have a long ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/08C09J133/06C09J167/06C09J175/04C09K3/10
CPCC08F287/00C08L67/06C08L67/07C09J133/06C08G18/633C08G2170/20C08L33/06C08G18/631C08F291/00C08L51/00C08G18/638C09J167/06C09J11/08C09J151/08C09J151/003C08L51/08C08G18/4072C08L33/08C08G18/12C08F289/00C08L2666/02C08G18/307
Inventor G·布雷纳R·科沙贝克S·巴尔克T·布兰德G·洛登
Owner EVONIK DEGUSSA GMBH
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