Method for producing a lead containing monomer composiion and a radiation shielding polymer
CA 1081898 A · Owner: Kyowa Gas Chemical Industry Co. Ltd. · Inventors: Nagai, Haruo; Nunokawa, Kunikazu; Uehara, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing a lead containing monomer composition comprising reacting a mixture comprising (1) at least one monomer selected from the group consisting of alkyl methacrylate having 1 - 4 carbon atoms in an alkyl group, hydroxyalkyl acrylate, hydroxyalkyl methacrylate and styrene, (2) acrylic or methacrylic acid (3) an organic, acid having the general formula: R1COOH wherein R1 is, is hydrocarbon residue having 5 - 20 carbon atoms and optionally (4) an organic acid having the general formula R2COOH, wherein R2 is hydrocarbon residue having 2 - 4 carbon atoms with lead monoxide. The composition is polymerized to obtain a radiation shielding polymer.
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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 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 1997.
- 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
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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.