C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/2017, 400/30
C08G 18/80 (2006.01) C08G 18/10 (2006.01) C08G 18/69 (2006.01) C08G 69/00 (2006.01)
Patent
CA 1249088
-22- ABSTRACT OF THE DISCLOSURE A process for the rapid polymerization of poly- butadiene/nylon-6 block copolymers comprises the steps of preparing a mixture comprising from about 100 to about 50 parts by weight of a low molecular weight polybutadiene terminated by an isocyanate and end-capped with caprolactam with from about 0 to about 50 parts by weight of a dry non- cold flowing rubber neutralized with caprolactam, charging the polymer mixture to a reaction vessel with caprolactam and polymerizing the caprolactam to form a block copolymer with the caprolactam terminated polybutadiene. The process of the present invention is also applicable to the rapid polymerization of other block copolymers formed from anionically polymerized cold flowing rubbers end capped by a compound selected from the group consisting of poly- isocyanates and polyisothiocyanates and terminated with an imide-forming group and mixed with a non-cold flowing rubber terminated with an amide-containing compound which mixture is reacted with a monomer having an active hydrogen other than a monomer utilized to form a polymer present in the polymer mixture and polymerizing the monomer.
463759
Greenstreet Arthur W.
Hergenrother William L.
Firestone Tire & Rubber Company (the)
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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