Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1982-08-24
1984-04-24
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
260932, 260961, 524123, 524130, 524131, 524132, 524261, 525146, 525464, C07F 940, C08K 553
Patent
active
044449305
ABSTRACT:
The invention relates to a fire-resistant synthetic resin composition containing a polycarbonate, more specifically a bisphenol A derivative, a phosphorous fireproofing additive derived from phosphonic acid, and possibly other additives and/or fillers.
The fireproofing additive is a Li, Na or K hemiester of a phosphonic acid derived from an aromatic or cycloaliphatic hydrocarbon, or from a polynuclear aromatic compound, and is added at the rate of 0.01 to 0.4 weight % in relation to polycarbonate. This small amount of additive improves the fire-resistant properties of the polycarbonate, without affecting its mechanical properties.
REFERENCES:
patent: 3839380 (1974-10-01), Rody et al.
patent: 4024103 (1977-05-01), Heinrich et al.
patent: 4210452 (1980-07-01), Nicholson et al.
patent: 4224203 (1980-09-01), Minagawa et al.
patent: 4272457 (1981-06-01), Poisson et al.
Chantrell et al., Journal of Applied Chemistry, vol. 15, No. 10, 1965, pp. 460-462.
Guerin Bernard
Poisson Pierre
Sturtz Georges
Ato Chimie
Kight III John
White R. A.
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