Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1978-07-03
1979-05-29
Phynes, Lucille M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
260860, 528176, 528300, 528301, 528302, 528308, 528309, C08G 6346, C08G 6376
Patent
active
041567749
ABSTRACT:
Thermoplastic copolyesters which have a minimum relative viscosity of 1.4 and contain, based on the polyester, (a) 40-50 mol % of units of terephthalic acid, (b) 0-10 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 polybutylene 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.
REFERENCES:
patent: 3682863 (1972-08-01), McHale
patent: 3763109 (1973-10-01), Witsiepe
patent: 3932326 (1976-01-01), Hoit et al.
patent: 4012363 (1977-03-01), Bruning et al.
patent: 4062907 (1977-12-01), Sublett
Buxbaum Lothar
Hugi Rolf
Ciba-Geigy Corporation
Hall Luther A. R.
Phynes Lucille M.
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