C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
400/6412
C09K 3/00 (2006.01) C08K 5/00 (2006.01) C08L 23/04 (2006.01) C08L 35/00 (2006.01) C09J 123/08 (2006.01) C09J 123/14 (2006.01) C09J 123/18 (2006.01) C09K 3/10 (2006.01) C09K 3/12 (2006.01) F16J 15/06 (2006.01) F16L 55/16 (2006.01) F17D 5/02 (2006.01)
Patent
CA 1092276
PROCESS FOR THE PRODUCTION OF SELF-SWELLING LEAKAGE-PREVENTING MATERIALS Abstract of the Disclosure A self-swelling leakage-preventing material is produced by reacting under heat a mixture of a copolymer of (a) a lower olefin, such as isobutene, with maleic anhydride, (b) a polymer emulsion having compatibility with the copolymer, such as an ethylene-vinyl acetate copolymer emulsion, and (c) a compound having at least two functional groups selected from the group consisting 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 material is useful for filling cracks, gaps, etc. in construction works, such as water distribution mains.
284817
C.i. Kasei Company Limited
Kirby Eades Gale Baker
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