Waterproofing agent for cable

Details Waterproofing agent for cable Waterproofing agent for cable

C - Chemistry, Metallurgy

08

F

C08F 220/56 (2006.01) B01J 20/26 (2006.01) B32B 27/30 (2006.01) C08F 220/06 (2006.01) C08L 33/02 (2006.01) C08L 33/26 (2006.01) C09K 3/18 (2006.01) H01B 7/282 (2006.01) H01B 7/285 (2006.01)

Patent

CA 2051353

ABSTRACT OF THE DISCLOSURE A cable grade waterproofing agent made of a cross- linked polymer produced by polymerizing a monomer mixture comprising at least one (meth)acrylic compound selected from the group consisting of (meth)acrylic acids and (meth)acrylic salts and a (meth)acrylamide in a molar ratio of said (meth)acrylic compound to said (meth)acrylamide in the range of from 1 : 9 to 5 : 5, said cross-linked polymer exhibiting a speed of absorption of not more than 8 minutes as expressed by the time required for the absorption of artificial seawater to reach 90% of the maximum, a capacity for absorption of said artificial seawater of not less than 8 times the own weight, and a gel viscosity in the range of from 0.6 x 105 to 2.5 x 105 dyne-s/cm3, and a composite waterproofing material carried on a substrate such as yarns and tape. -58-

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