Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-11-26
1977-08-02
Woodberry, Edward M.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 17R, 260 174ST, 260 174CL, 260 4217, C08L 500, C08L 8900
Patent
active
040394921
ABSTRACT:
There is disclosed a class of asbestos-free, surface coating compositions useful for finishing of interior building walls or ceilings constructed with wallboard and the like, the so called dry wall construction. The compositions contain, as a substitute for the commonly employed asbestos fibers, a synthetic fiber which is a water-dispersible, thermoplastic polyolefin prepared by solution polymerization with a coordination catalyst and precipitated from the solution under high shear forces. The synthetic fibers can be surface modified by treatment with hydrophilic colloids such as starch or polyvinyl acetate or can bear carboxyl or sulfonate groups to improve their water dispersibility. The fibers are commercially available under the designation SWP from the Crown Zellerbach Company, Camas, Washington. The invention also includes a method for preparation of surface coating compositions including the steps of milling of the water dispersible polyolefin fibers, blending of the fibers into surface coating compositions as a substitute for asbestos fibers therein and remilling of the blended compositions or, alternatively, milling and drying of the synthetic, water-dispersible polyolefin fibers prior to blending of the fibers into the compositions.
REFERENCES:
patent: 3196122 (1965-07-01), Evans
patent: 3297601 (1967-01-01), Maynard et al.
patent: 3303147 (1967-02-01), Elden
patent: 3386223 (1968-06-01), Wegwerth
patent: 3878183 (1975-04-01), Koga et al.
patent: 3891582 (1975-06-01), Des Marais
Hamilton Materials
Woodberry Edward M.
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