Melt blends of polyesters
US5171778A · kind A · utility
9Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Aug 15, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition prepared by blending liquid crystalline polyesters and linear polyesters under reactive conditions in the presence of at least one poly(O- or N- epoxy alkyl substituted) cyclic amide, imide, or imidate; wherein the blend exhibits an anisotropic melt phase. Articles made from the composition have increased strength stiffness and improved drip characteristics. A preferred embodiment includes a polyalkylene terephthalate, a liquid crystalline polyester with structural units including p-benzoic acid and naphthoic acid, and triglycidyl isocyanurate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.