Hot melt butyl sealant intermediate

Details Hot melt butyl sealant intermediate Hot melt butyl sealant intermediate

1977-08-10

1978-09-05

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260874, 260860, 260887, 260892, 260894, 260896, C08L 6706

Patent

active

041120205

ABSTRACT:
Intermediate compositions useful for the preparation of improved hot melt butyl sealants are obtained by partially grafting a mixture of a butyl rubber, a different elastomer and/or a crystalline polymeric resin, and an elastomeric resin. Preferred compositions are (1) partially grafted mixtures of butyl rubber, epichlorohydrin rubber, and a block copolyester elastomeric resin, (2) partially grafted mixtures of butyl rubber, ethylene-vinyl acetate copolymer, and a block copolyester elastomeric resin, and (3) partially grafted mixtures of butyl rubber, styrene-ethylene-butylene-styrene block copolymer rubber, and a block copolyester elastomeric resin.

REFERENCES:
patent: 3651014 (1972-03-01), Witsiepe
patent: 3674735 (1972-07-01), Callan
patent: 3853796 (1974-12-01), Oldack et al.
patent: 3900999 (1975-08-01), Callan
patent: 3959062 (1976-05-01), Hoh et al.
patent: 3965055 (1976-06-01), Schichman et al.
patent: 3987122 (1976-10-01), Bartz et al.

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