Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1987-10-05
1989-05-16
Pertilla, Theodore E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525480, 528142, 528146, 528162, C08G 828, C08L 6106
Patent
active
048310867
ABSTRACT:
The present invention is a cyanato group containing phenolic resin of the formula: ##STR1## wherein n is 0 or an integer of one or more, and R is the same or different and is selected from the group consisting of hydrogen and methyl radicals. The advancement over the art is that the resin of the present invention is stable and has a long shelf life. This is indicated by the gel time of greater than 1 minute, preferably greater than 2 minutes, more preferably greater than 10 minutes, and most preferably greater than 20 minutes at 155.degree. C. Alternately, the improved phenolic triazine resin of the present invention can be characterized as having a thermal stability indicated by thermal decomposition temperature of at least 400.degree. C. and preferably of at least 450.degree. C. as measured by Thermal Gravimetric Analysis (TGA).
REFERENCES:
patent: 2929713 (1975-12-01), D'Alelio
patent: 3448079 (1969-06-01), Grigat et al.
patent: 3890272 (1975-06-01), D'Alelio
patent: 3966670 (1976-06-01), Grazen et al.
patent: 4022755 (1977-05-01), Tanigaichi et al.
patent: 4096108 (1978-06-01), Webb et al.
patent: 4118377 (1978-10-01), D'Alelio
patent: 4157360 (1979-05-01), Prevorsek et al.
patent: 4218361 (1980-08-01), Searjean et al.
patent: 4219452 (1980-08-01), Littlefield
patent: 4268657 (1981-05-01), Manzara et al.
patent: 4281361 (1981-07-01), Patz et al.
Kunstoffe, Bd, 58, pp. 827-832 (1968) by R. Kubens et al.
S.V. Vinogradova, et al. Izv. Akad. Nauk SSSR Ser. Khim, 887 (1971), Cyano Esters of Bisphenols.
Ed. R. Stevens, John Wiley & Sons, New York, vol. 61, (1983) Organic Synthesis: Cyanic Acid Esters from Phenols: Phenyl Cyanate.
Joachim Kohm, Chemalog Hi-Lites, vol. 6, Esters of Cyanic Acid; Valuable Intermediates in Organic Synthesis.
International Appln. No. PCT/US 87/00123 6/87.
Delano, et al., Synthesis of Improved Phenolic Resins.
U.S. Ser. No. 041,018 filed 1/16/87 and Info. Disclosure Statements dated 8/19/86, 6/19/87 and 5/3/88 and their Respective PTO-1449 forms with the references that are Listed; copy form PTO-892 listing references cited by the Examiner in that application.
Parent to Ser. No. 041,018 which is 821,658 filed 1/23/86, now abandoned.
Das Sajal
Prevorsek Dusan C.
Allied-Signal Inc.
Fuchs Gerhard H,.
Pertilla Theodore E.
Stewart, II Richard C.
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