Process for the modification of polyphenylene ether resin compositions in the presence of a citraconimide compound
US5523360A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1995 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Feb 2, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F299/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the modification of a polyphenylene ether resin composition is claimed, said process being carried out in a temperature range of between the melting point and the degradation point of said resin composition and in the presence of an effective amount of a citraconimide compound to reduce the melt viscosity of said resin composition, said citraconimide compound being represented by formula (I), wherein X is selected from the group consisting of hydrogen, C.sub.1 -C.sub.18 alkyl groups, C.sub.2 -C.sub.18 alkenyl groups, C.sub.2 -C.sub.18 alkynyl groups, C.sub.3 -C.sub.18 cycloalkyl groups, C.sub.3 -C.sub.18 cycloalkenyl groups, C.sub.3 -C.sub.18 cycloalkynyl groups, C.sub.6 -C.sub.18 aryl groups, C.sub.7 -C.sub.30 aralkyl groups, C.sub.7 -C.sub.30 alkaryl groups, and C.sub.7 -C.sub.30 alkernaryl groups, all of which may be linear or branched and unsubstituted or substituted with one or more amino, carboxy, cyano, halogens, esters, oxiranes, ethers, nitro, hydroxy and alkoxy groups. The melt viscosity of the resin compositions is significantly reduced by the process of the present invention. Furthermore, functional groups are introduced in the resin compositions by modifi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.