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US4166895A Copolyester from 1,4-butanediol and a dicarboxylic acid mixture 失效
共聚酯由1,4-丁二醇和二羧酸混合物组成

Copolyester from 1,4-butanediol and a dicarboxylic acid mixture
摘要:
Copolyesters formed from 1,4-butanediol and a dicarboxylic acid mixture of, relative to the polyester, 8-12 mol % of sebacic acid or of an amount equal by weight of a saturated aliphatic dicarboxylic acid having 6 to 36 C atoms, 26-32 mol % of terephthalic acid and 7.5 to 12 mol % of isophthalic acid are hot melt adhesives which are characterized by resistance to ageing even at elevated temperatures, good adhesive strength and a relatively high heat resistance of the bonded areas.
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