Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-07-02
1977-03-22
Marquis, Melvyn I.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 336UB, 260 775AM, 260 775AP, 260 775AT, 428425, 428, 428, C08K 501, C08L 114
Patent
active
040135985
ABSTRACT:
Coated substrates of much superior wear and stain resistance are formed by successively superimposing epoxy resin and at least 3 coatings of polyurethane each formed from diisocyanate and branched chain polyols that are crosslinked by a polyhydroxy material, the outer coating being of different composition from inner coatings, and comprising a polycaprolactone chain extender. This invention relates to highly wear resistant and decorative seamless flooring which may be formed over various surfaces such as concrete, wood, vinyl asbestos tile, and the like, from a plurality of coats of liquid compositions. It particularly relates to the wear resistant glaze layers of a seamless flooring, and to a polyurethane base composition used for forming such layers.
REFERENCES:
patent: 3534000 (1970-10-01), Blanc et al.
patent: 3549404 (1970-12-01), Liberti et al.
patent: 3717612 (1973-02-01), Babayan
patent: 3721640 (1973-03-01), Wilhelm et al.
patent: 3775354 (1973-11-01), Hostettler et al.
Saunders et al.--Polyurethanes: Chemistry & Technology, II Technology (Interscience)(N.Y.)(1964), p. 532.
Evans Robert M.
Fogel Joseph S.
Fletcher H. H.
Marquis Melvyn I.
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