AMINOPLAST FOAMS OF HARDENED REACTION PRODUCTS OF ALDEHYDES AND DIFUNCTIONAL MODIFIED .alpha..OMEGA. UREAS
CA 1111599 A · Owner: Bayer Aktiengesellschaft · Inventors: Dahm, Manfred; Wagner, Kuno; Muller, Hanns P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aminoplast foams of hardened reaction products of aldehydes and at least bifunctional modified .alpha..omega.-ureas which contain at least one ether, thioether, acetal ester, ester, amide and/or carbonate group and have a molecular weight of from 200 to 10,000. These aminoplast foams may be used for any purposes for which conventional foams are normally used for example as shock-absorbing and sound-absorbing materials in insulation, in upholstery, as absorbents in water treatment, or as structural material in goods such as tables and chairs.
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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 October 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 1998.
- 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.