Polyester copolymer
US4436896A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1982 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Sep 14, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/672
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester copolymer, suitable for an adhesive, is obtained by copolymerizing PA0 (A) terephthalic acid or a mixture of more than 50 mol % of terephthalic acid and at least one kind of dicarboxylic acid selected from aromatic dicarboxylic acids excluding terephthalic acid and aliphatic dicarboxylic acids, PA0 (B) a low-molecular weight diol composed of 1 to 50 mol % of 2-methyl-1,3-propanediol and 99 to 50 mol % of 1,6-hexanediol, and PA1 (C) at least one kind of high-molecular weight diol (in such an amount that the high-molecular weight diol component in the copolymer is 0 to 60 wt %) selected from polyalkylene ether glycol and polycaprolactone glycol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.