Reinforced thermoplastic polyester compositions having improved high voltage breakdown resistance
US4104242A · kind A · utility
5Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1976 |
| Grant date | Aug 1, 1978 |
| Priority date | — |
| Expiry date | Dec 16, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Reinforced thermoplastic compositions are provided comprising a high molecular weight linear polyester, such as poly(1,4-butylene terephthalate) in combination with a reinforcing agent and a minor proportion of an alkylhydroxyphenylalkanoyl-hydrazine, such as N,N'-bis(3,5-di-tert-butyl-4-hydroxy-hydrocinnamoyl)-hydrazine. The use of the alkylhydroxyphenylalkanoyl-hydrazine retains the inherent resistance to high voltage breakdown of the polyester resin component while not affecting the other properties of the composition, such as strength, modulus, shrinkage, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.