Thermoplastic copolyesters, processes for their preparation...

Details Thermoplastic copolyesters, processes for their preparation... Thermoplastic copolyesters, processes for their preparation...

C - Chemistry, Metallurgy

08

G

402/203, 154/107

C08G 63/18 (2006.01) C08G 63/66 (2006.01) C08G 63/672 (2006.01) C08G 63/685 (2006.01) C09J 167/02 (2006.01)

Patent

CA 1117244

Case 3-11230/CGM 179/+ CANADA Thermoplastic copolyesters, processes for their preparation and their use Abstract of the Disclosure Thermoplastic copolyesters which have a minimum relative viscosity of 1.4 and contain, based on the poly- ester, a) 40 - 50 mol % of units of terephthalic acid, b) 0 - l0 mol % of units of aliphatic, cycloaliphatic or other aromatic dicarboxylic acids, c) 15 - 30 mol % of units of ethylene glycol, d) 34.5 - 15 mol % of units of diethylene glycol and e) 0.5 - 5 mol % of units of poly- butylene glycol with a molecular weight of 650 or the same amount by weight with a molecular weight of between 400 and 4,000, it being possible for up to 10 mol % of the units of ethylene glycol and/or diethylene glycol to be replaced by units of alkylenediols having 3 to 10 C atoms and/or units of a bisphenol dihydroxyalkyl ether, are outstandingly suitable as hot-melt adhesives.

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