Moldable and/or extrudable polyether-ester-amide block copolymers
US4331786A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | Sep 30, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A moldable and/or extrudable polyether-ester-amide block copolymer is disclosed which has the formula ##STR1## wherein A is a linear saturated aliphatic polyamide sequence formed from a lactam or amino acid having a hydrocarbon chain containing 4 to 14 carbon atoms or from an aliphatic C.sub.6 -C.sub.12 dicarboxylic acid and a C.sub.6 -C.sub.9 diamine, in the presence of a chain-limiting aliphatic carboxylic diacid having 4 to 20 carbon atoms; said polyamide having an average molecular weight between 300 and 15,000; and B is a polyoxyalkylene sequence formed from linear or branched aliphatic polyoxyalkylene glycols, mixtures thereof or copolyethers derived therefrom said polyoxyalkylene glycols having a molecular weight of between 200-6,000 and n indicates a sufficient number of repeating units so that said polyether-ester-amide block copolymer has an intrinsic viscosity of from about 0.8 to about 2.05. The polyether-ester-amide block copolymer is prepared by reacting a dicarboxylic polyamide, the COOH groups of which are located at the chain ends, with a pol-oxyalkylene glycol hydroxylated at the chain ends, in the presence of a catalyst constituted by a tetraalkylorthotitanate ha…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.