Process for the preparation of self-swelling leakage-preventing

Details Process for the preparation of self-swelling leakage-preventing Process for the preparation of self-swelling leakage-preventing

1978-11-30

1980-07-08

Seccuro, Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

428288, 428394, 428396, 525194, 525207, C08L 2322, C08L 2326, C08L 2336, C08L 3500

Patent

active

042118514

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 acrylic polymer emulsion, and a compound having at least two functional groups in a molecule selected from the group consisting of a hydroxy group, amino group and epoxy group, such as ethylene glycol, until a crosslinked product having a swelling ratio 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
"Concise Chemical and Technical Dictionary" H. Bennett, 1974, p. 17.

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