Composition of pullulan and thermoplastics
CA 1058341 A · Owner: Sumitomo Chemical Company Limited · Inventors: Tsuji, Kozo; Saito, Teruo; Matsunaga, Hiroomi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel resin composition is obtained by blending a hydrophilic pullulan with 2 to 98 wt % based on the total resin weight, of a hydrophobic thermoplastic resin. In case the amount of the thermoplastic resin is 2 to 50 wt %, there is obtained a resin composition consisting essentially of the pullulan which is excellent in water resistance, while in case the amount of the thermoplastic resin is 50 to 98 wt % there is obtained a resin composition consisting essentially of the thermoplastic resin which has been improved in water and moisture absorptivity.
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 July 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 10, 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.