Process for storage stable mastic adhesive from polychloroprene latices
CA 1056977 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Poskitt, Ralph L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Storage stable mastic adhesive is produced by blending a neoprene latex having a gel content of at least 60% and a neoprene latex in which the polymer is at least almost completely soluble in toluene and mixing the blend with an organic water-immiscible solvent for neoprene until a water-in-oil type dispersion is obtained. The viscosity and/or storage stability of the mastic can be further increased by the addition of water to the mastic.
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 June 19, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 1996.
- 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.