Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1991-10-07
1993-11-23
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524556, 524558, 525285, 525286, 525119, 523406, 52631842, C08J 300, C08K 320, C08L 3700, C08F26704
Patent
active
052644820
ABSTRACT:
A water-based autoxidizable coating composition, especially a gloss or partial gloss coating composition (e.g. paint, varnish, woodstain or timber preservative) suitable for application at ambient temperatures which comprises water, preferably organic cosolvent and a partially esterified carboxylic acid film-forming copolymer at least partially neutralized by monovalent cations wherein the copolymer contains added 3-allyloxy-2-hydroxypropyl groups or certain analogues derived from addition of allyl glycidyl ether or certain of its analogues to carboxylic acid groups, in a copolymeric backbone portion derivable from a prepolymer of weight average molecular weight less than 30 000. The partially esterified copolymer has an acid value of 25 to 60 and preferably a dynamic solution viscosity of 1 to 500 Pa.sec measured in 1-methoxy-2-hydroxy propane by oscillatory parallel plate rheometer. The coatings lap well, dry quickly and achieve acceptable water resistance. Also the optionally unneutralized copolymer and the coating composition when containing a minor amount of particulate copolymer which is found to improve gloss. Discoloration on ageing may be improved by neutralizing with Group 1 metal cations.
REFERENCES:
patent: 3953408 (1976-04-01), Hosoi
patent: 3976614 (1976-08-01), Elms
patent: 4216302 (1980-08-01), Skillicorn
patent: 4294735 (1981-10-01), Bentley
patent: 4304701 (1981-12-01), Das et al.
Odian, George, Principles of Polymerization, 2nd ed. 1981 pp. 20-25 and 279-281.
Bromley Charles W. A.
Gosling Julian J.
Nicks Peter F.
Taylor Philip L.
Michl Paul R.
Niland Patrick
Schmitz Thomas M.
The Glidden Company
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