Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1978-01-09
1978-09-19
Schain, Howard E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
260 172, 260 19A, 260 19N, 260 38, 528132, 528163, C08G 1410, C08G 1412
Patent
active
041153669
ABSTRACT:
The phenolic molding compound described herein is improved in arc resistance, arc track voltage and flame or fire retardance by the presence of 10.5-20, preferably 11-16 percent by weight, of melamine based on the total composition, The fillers and modifiers used in such resin compositions are those normally used for molding purposes. Based on the starting Novolac used, the effective amount of melamine for these improvements is found to be 30-60 parts, preferably 32-50 parts by weight per 100 parts of Novolac resin. These amounts are found to have effective results for thicknesses as low as 0.020 inch.
REFERENCES:
patent: 2387256 (1945-10-01), Groten
patent: 2593926 (1952-04-01), Simons
patent: 2816085 (1957-12-01), Anas et al.
patent: 3321551 (1967-05-01), Knutsson
Chem. Abstracts, vol. 70, 1969, 78785z, Matsuda et al.
Monacelli Walter J.
Plastics Engineering Company
Schain Howard E.
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