Production of low-shrinkage nylon moldings
CA 1233588 A · Owner: Basf Aktiengesellschaft · Inventors: Buensch, Hellmut; Heckmann, Walter; Hesse, Anton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Low shrinkage nylon moldings are produced by activated alkaline lactam polymerization preferably using the reactive injection molding technique by a process wherein the polymerization is carried out in the presence of from 5 to 80% by weight of a polymer P which, 1. is completely soluble in the lactam 2. separates out in the course of polymerization at a conversion of from 1 to 50%, 3. is composed of one or more blocks which are compatible with polylactam and one or more blocks which are incompatible therewith, and preferably, 4. possesses functional groups which are incorporated into the growing polylactam chain.
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 1, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 1, 2005.
- 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.