Abs-polymers of high notched impact strength
CA 1137670 A · Owner: Bayer Aktiengesellschaft · Inventors: Kuhlmann, Dieter; Kowitz, Friedrich; Arnold, Bernhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a composition of matter comprising 100 parts by weight of an ABS polymer, 0.05 to 0.5 parts by weight of a liquid polymethyl phenyl siloxane or liquid polydimethyl siloxane having a viscosity from 20 to 100,000 cSt. at 20 degrees centigrade and 0.25 to 5 parts by weight of calcium stearate pentaerythritol tetrastearate the bis-stearylamide of, ethylene diamine or mixtures thereof. By this method it is possible to improve the physical properties of ABS-polymers.
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 December 14, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 1999.
- 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.