Production of aromatic amorphous thermoplastic poly aryl ether from aliphatic-aromatic diol and wholly aromatic diol
US4783520A · kind A · utility
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2References
19Claims
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Key dates
| Filing date | Jul 1, 1987 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Jul 1, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/4093
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The method of preparing a thermoplastic polyarylether polymer which comprises reacting a first monomer composition comprising an activated dihalobenzenoid compound and a dihydroxydiphenyl aliphatic monomer in a molar ratio of dihalobenzenoid compound to dihydroxybenzenoid compound of at least 1.2 to 1, adding to the product a second monomer composition comprising a dihydroxybenzenoid compound comprising at least one compound which is free of aliphatic moieties and polymerizing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.