Sealants

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C - Chemistry, Metallurgy

09

K

400/1130, 6/118,

C09K 3/00 (2006.01) C08L 21/00 (2006.01) C08L 21/02 (2006.01) C08L 95/00 (2006.01) C09K 3/10 (2006.01) C09K 3/12 (2006.01) F17D 1/00 (2006.01)

Patent

CA 1064178

ABSTRACT This invention relates to a non-cationic bitumen and rubber in water emulsion sealant for internally sealing leakages in pipes, particularly gas mains. Sealant is applied by pressurizing the sealant into any leaks. The sealant possesses the following particular advantages:- (a) Remains in the leak and is not drawn from the leakage path when the main is place back into operation. (b) Dries without cracking. (c) Excess sealant can be easily pumped from the pipe. (d) Stability of the emulsion.

209664

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