Preparation of dodecane terephthalamide polymers
US5191060A · kind A · utility
11Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1992 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Jan 8, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/28
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process of preparing homopolymers and copolymers of dodecane terephthalamide having a high melting temperature and dimensional stability, comprising the steps of forming an aqueous suspension of a prepolymer comprising substantially equimolar diacid/diamine admixture of 1,12-dodecanediamine, terephthalic acid, and optionally at least one additonal comonomer in a reactor at a reaction temperature below the melting temperature of the resulting polyamide polymer; drying the prepolymer; and polycondensating the dried prepolymer in an extruder, particularly a vented single screw extruder, to form the polyamide polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.