Compatible styrene-methacrylate polymer blends
CA 1304859 C · Owner: Rohm G.M.B.H. Chemische Fabrik · Inventors: Siol, Werner; Terbrack, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compatible polymer blend consisting of: I) 0.1-99.9% by weight of a polymerisate P1 which is formed from monomers of formula I: I, wherein R1 is hydrogen or methyl, and II) 99.9- 0.1% by weight of copolymerisate P2, which is formed from a) 5-40% by weight of cyclohexyl methacrylate b) 30-70% by weight of a methacrylic ester of formula II:, II, wherein R2 is methyl or ethyl c) 10-50% by, weight of a methacrylic ester of formula III: III, wherein R3 is a hydrocarbon group having 4-18 carbon atoms, and d) 0-10 parts by weight of a monomer M which is copolymerizable with monomers of a) - c) yet different from these monomers.
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 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 2009.
- 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.