Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1991-09-11
1993-05-25
Schofer, Joseph L.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
5263076, 526240, B32B 516, C08F22602
Patent
active
052138933
ABSTRACT:
A cable grade water proofing 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.times.10.sup.5 to 2.5.times.10.sup.5 dynes.multidot.s/cm.sup.3, and a composite waterproofing material carried on a substrate such as yarns and tape.
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Kobayashi Hiroya
Okamura Kazuhiro
Shimomura Tadao
Takahashi Yoshiyuki
Behr Omri M.
McDonald Matthew J.
Nippon Shokubai Co. , Ltd.
Sarofim N.
Schofer Joseph L.
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