Impact-resistant polyester molding compounds
CA 1300291 C · Owner: Huls Aktiengesellschaft · Inventors: Bartz, Wilfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
23443-340, Abstract:, Impact-resistant polyester molding compounds Impact-resistant polyester molding compounds consisting of, an intimate mixture of, A. 60 to 98% by weight of a polyester and, B. 2 to 40% by weight of a polyalkenamer optionally containing functional groups, in which this mixture was treated at elevated temperatures with 0.05 to 5% by weight, relative to the sum of components A. and B. of an organic radical former. Because of the after treatment, low molecular weight polyalkenamer having a low viscosity can be used. Thus the workability is improved. An unmodified polyalkenamer can also be used. O.Z. 4158
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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 May 5, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 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.