Process for producing improved polyphenylene sulfide resin
CA 1298023 C · Owner: Nitoh, Toshikatsu · Inventors: Nitoh, Toshikatsu; Nonaka, Toshifumi; Takahashi, Katsuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A modified polyphenylene sulfide resin is produced by the steps of mixing a polyphenylene sulfide resin with at least one silane compound selected from the group consisting of vinylalkoxysilanes epoxyalkoxysilanes, aminoalkoxysilanes and mercaptoalkoxysilanes and kneading the mixture at a temperature which is higher by 5 to 100°c than the melting point of the polyphenylene sulfide resin for at least 30 seconds. It has an increased melt viscosity. 65702-297, PROCESS FOR PRODUCING IMPROVED POLYPHENYLENE SULFIDE RESIN, The present invention relates to a process for producing a polyphenylene sulfide resin. In particular, the present invention relates to a process for producing a modified …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.