Thermosetting molding resin compositions

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface

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264236, 2643286, B28B 124

Patent

active

042255546

ABSTRACT:
This invention provides, in a first aspect, means for obtaining a liquid thermosetting polyester resin composition which is degassed without the loss of volatile component, by the presence of a dimethyl polysiloxane ingredient in the resin composition. The second aspect of the invention provides for mold lubrication and parting without substantial surface problems in the finished product by the presence of a mixture of an alkyl phosphate ester parting agent in combination with an alkylene bis-alkamide material.

REFERENCES:
patent: 2359698 (1944-10-01), Uhlig
patent: 2523065 (1950-09-01), Sage
patent: 2593827 (1952-04-01), Anspon et al.
patent: 2643240 (1953-06-01), Walton et al.
patent: 3341646 (1967-09-01), Britain
patent: 3608150 (1971-09-01), Laufer et al.
patent: 3652484 (1972-03-01), Weissermel et al.
patent: 3772241 (1973-11-01), Kroekel
patent: 3810863 (1974-05-01), Hatton et al.
patent: 3825517 (1974-07-01), Ficarra
patent: 3909484 (1975-09-01), Beavon
patent: 3959203 (1976-05-01), Keil
patent: 4052495 (1977-10-01), Uhlmann et al.
Modern Plastics Encyclopedia 1974-1975, vol. 51, No. 10A p. 74, Oct. 1974. _

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