Process for the production of self-swelling leakage-preventing m

Details Process for the production of self-swelling leakage-preventing m Process for the production of self-swelling leakage-preventing m

1977-08-16

1979-05-22

Seccuro, Carman J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

428394, 428396, 260 304R, 260 326PQ, 260 334PQ, C08L 2308

Patent

active

041559576

ABSTRACT:
A self-swelling leakage-preventing material is produced by reacting under heat a mixture of a copolymer of a lower olefin such as isobutene with maleic anhydride, a polymer emulsion having compatibility with the copolymer, such as an ethylene-vinyl acetate copolymer emulsion, and a compound having at least two functional groups selected from the group consisting of hydroxyl groups, amino groups and epoxy groups, such as ethylene glycol, until a cross-linked product having a swelling rate of 5-40 times is obtained. The mixture itself may be shaped into a suitable form prior to the reaction. A core material such as a non-woven fabric may be impregnated with the mixture prior to the reaction.

REFERENCES:
patent: 3642726 (1972-02-01), Hellman
patent: 3765829 (1973-10-01), Lambert
patent: 3966672 (1976-06-01), Gaylord

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