Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-05-12
1978-01-03
Lieberman, Allan
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 238R, 260 328N, 260 332R, 260 336UB, 260 336UA, 260 4237, 260 4247, 260859R, 260893, C08K 501, C08K 549, C08L 4700, C08L 7504
Patent
active
040665992
ABSTRACT:
A system adapted for the application of a moisture-proof barrier to a substrate. The system comprises a liquid rubber precursor formulation and an isocyanate formulation which are adapted for mixing to provide a reactive mixture for application to the substrate. The liquid rubber precursor includes a hydroxyl terminated butadiene polymer, a polyether triol, an organo-mercury catalyst, carbon black, a low oil absorbency silica, a suspending agent for the silica, a molecular sieve dessicant, a limited proportion of an organic solvent, and lecithin in an amount sufficient to provide a formulation viscosity of not greater than about 20,000 cps at 27.degree. C. The second formulation contains a urethane prepolymer derived from a polypropylene glycol ether polyol and toluene diisocyanate, containing between about 13 and about 17% by weight free isocyanate groups.
REFERENCES:
patent: 3714110 (1973-01-01), Verdol et al.
patent: 3869421 (1975-03-01), Sapp et al.
Arco Chemical Company, Product Bulletin BD-1.
Arco Chemical Company, Product Bulletin BD-2.
Arco Chemical Company, "Poly bd Liquid Resins" (for improved liquid rubber technology).
Arco Chemical Company Bulletin designated for "for improved liquid rubber liquid rubber technology".
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