Hot melt sealant compositions
CA 1293074 C · Owner: Sanders, Andrea · Inventors: Chin, Steven Soohyun; Sanders, Andrea
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hot melt sealant composition which comprises:a. 0-50 parts by weight of a multiblock copolymer having at least two endblocks A and at least one elastomeric midblock B; b. 50-100 parts by weight of one or more diblock copolymers consisting of one block A' and one block B' wherein:, the blocks A and A' comprise monoalkenyl arene blocks and the blocks B and B' comprise hydrogenated conjugated diene polymer blocks, and the average molecular weight of the blocks A and A' is greater than the minimum molecular weight needed to obtain microphase separation and domain formation of the blocks A and A', and is less than the maximum molecular weight which would render the polymer incapable of being …
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 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2008.
- 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.