Two-part adhesive activator enriched with dihydropyridine...

Details Two-part adhesive activator enriched with dihydropyridine... Two-part adhesive activator enriched with dihydropyridine...

C - Chemistry, Metallurgy

08

K

26/197, 400/4003

C08K 5/34 (2006.01) B32B 7/12 (2006.01) C08F 255/02 (2006.01) C08L 23/34 (2006.01) C08L 61/22 (2006.01) C09J 4/06 (2006.01) C09J 5/04 (2006.01)

Patent

CA 1206290

ABSTRACT OF THE DISCLOSURE This invention relates to a two-part, improved composition comprising: a first part comprising a solution of a chloro- sulfonated polyethylene in at least one polymerizable vinyl monomer; and a second part comprising an activator composition which is formed from the condensation reaction of butyraldehyde and aniline, and containing no more than about 50% by weight of a substituted dihydropyridine, wherein the improvement comprises enriching the content of N-phenyl-3,5, diethyl-2- propyl-1,2-dihydxopyridine (hereinafter DHP) to a concentration of at least about 70% by weight of said second part. The other condensation products in the second part should not exceed 30% of the weight of the second part nor exceed 42% of the weight of the DHP. This enrichment results in a novel purified form of the activator which can be obtained by a variety of isolation and separation techniques to reduce the slipperiness, oily texture, obnoxious color and odor of the prior art activators.

390530

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