Copolyester adhesives
CA 1191299 A · Owner: Eastman Kodak Company · Inventors: Sublett, Bobby J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are linear, crystalline or partially crystalline copolyesters derived from 100 mole % of a dibasic acid component comprising at least 40 mole % terephthalic acid and up to about 60 mole % of a second dicarboxylic containing 3-12 carbon atoms and 100, mole a of a glycol component comprising at least 40 mole % 1,4-butanediol and up to about 60 mole % diethylene glycol, the copolyester characterized by having a melting point of about 40-220°C. a glass transition temperature of about -20°C. to about 40°C. a heat of fusion of not less than 1.0 calorie per gram and a crystalline half time of less than 10 minutes at maximum crystallization temperature. These copolyesters are especially …
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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 July 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2002.
- 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.