Coating system

Details Coating system Coating system

1977-11-14

1980-03-25

Lieberman, Allan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 312MR, 260 328A, 260 328N, 260 328SB, 260 332R, 260 332SB, 260 334SB, 260 334UR, 260 336A, 260 336SB, 260 336UB, 260 4222, 525123, C08K 501, C08K 504, C08L 900, C08L 7504

Patent

active

041950097

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).

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