Transparent copolyamide from bis(4-amino-3,5-diethyl cyclohexyl) methane
US4731421A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Jan 7, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/36
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Transparent copolyamides with very good processibility, very good mechanical properties, excellent transparency and hydrolysis stability in boiling water, and alloyability with other polyamides, are obtained through polycondensation of alkyl derivatives of dicycane and additional polyamide-forming components, together with isophthalic acid and an .omega.-aminocarboxylic acid or its lactam with more than 8 C-atoms, or salts thereof, or a stoichiometric mixture of an aliphatic dicarboxylic acid and an aliphatic diamine. The copolyamides of the invention are excellently suitable for the production of molded articles, thanks to their low processing viscosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.