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Crystalline copolyesters having good solubility in unhalogenated solvents and their use

A technology of copolyester and crystalline state, which is applied in the preparation of crystalline polymer copolyester and in the field of adhesives, can solve the problem of being insoluble in non-halogenated solvents, etc., and achieve the effect of excellent adhesion value

Inactive Publication Date: 2008-08-13
EVONIK DEGUSSA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Crystalline copolyesters pelletize well but are insoluble in non-halogenated solvents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 38mol-% terephthalic acid

[0041] 29mol-% isophthalic acid

[0042] 23mol-% sebacic acid

[0043] 10mol-% dimer fatty acid

[0044] 80mol-% 1,4-butanediol

[0045] 18mol-% 1,6-hexanediol

[0046] 2mol-% polytetramethylene glycol 1000

[0047] Analytical data: Mw 51700; Tg-35℃; Tm70℃; ΔHm9J / g

[0048] Mw = molecular weight, GPC-method (relative to polystyrene)

[0049] Tg = glass transition temperature, DSC-method

[0050] Tm = melting temperature, DSC-method

[0051] ΔHm = melting enthalpy, DSC-method

Embodiment 2

[0053] 38mol-% terephthalic acid

[0054] 29mol-% isophthalic acid

[0055] 23mol-% sebacic acid

[0056] 10mol-% dimer fatty acid

[0057] 80mol-% 1,4-butanediol

[0058] 18mol-% 2.2'-Dimethylpropanediol

[0059] 2mol-% polytetramethylene glycol 1000

[0060] Analytical data: Mw 52000; Tg -30℃; Tm50℃; ΔHm3J / g

Embodiment 3

[0062] 38mol-% terephthalic acid

[0063] 29mol-% isophthalic acid

[0064] 23mol-% sebacic acid

[0065] 10mol-% dimer fatty acid

[0066] 80mol-% 1,4-butanediol

[0067] 19mol-% 1,6-hexanediol

[0068] 1mol-% polytetramethylene glycol 1000

[0069] Analytical data: Mw 52700; Tg -28°C; Tm72°C; ΔHm9J / g

[0070] Similar to the comparative example preparation of embodiment 1

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Abstract

The present invention relates to the preparation of crystalline polymer copolyesters with excellent solubility in non-halogenated solvents and non-aromatic solvents and their use in adhesives.

Description

technical field [0001] The present invention relates to the preparation of crystalline polymeric copolyesters with excellent solubility in non-halogenated and non-aromatic solvents and their use in adhesives. Background technique [0002] Adhesives based on copolyesters have a wide variety of applications especially in the adhesive industry due to their broad adhesion spectrum and good mechanical properties. Despite the increasing use of melt coating, there is also a great need for adhesives that can be applied from solution. From an environmental point of view, non-halogenated solvents and solvents free of aromatic compounds such as methyl ethyl ketone and ethyl acetate are preferred. The solution is usually prepared by dissolving solid copolyester particles in the desired solvent, the solids content being as high as possible economically. The higher the solids content, the less solvent has to evaporate when making the adhesive. Another advantage is that it is transporte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/16C08G63/672C09J167/02C09K3/10
CPCH04B5/0012C09J167/02C08L2205/05C08G63/183Y10T156/10H04B5/22C08G63/02
Inventor G·布伦纳R·科沙贝克G·贝克
Owner EVONIK DEGUSSA GMBH