Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1976-02-11
1980-03-18
Nielsen, Earl A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
260 334EP, 528152, 528153, 528155, C08G 810, C08G 828
Patent
active
041940717
ABSTRACT:
There is disclosed a thermosetting phenolic resin composition, suitable for use in injection molding, which resin composition contains a molding grade phenolic resin and an effective amount of a reactive compound (e.g., para-t-butylphenol) that is capable of reducing the viscosity of molding compositions containing said phenolic resin compositon to a processable viscosity at a temperature at which the period of time within which said molding composition cures to a thermoset state is longer than the period of time that said molding composition is in the runner during a normal injection molding operation. There is also disclosed molding compositions containing said phenolic resin composition, and an injection molding process utilizing the same.
REFERENCES:
patent: 2809178 (1957-10-01), Turner et al.
patent: 3053807 (1962-09-01), Lederman et al.
patent: 3448001 (1969-06-01), Jarvi
Schonthaler et al., W. Germany Public Disclosure, 1,694,853, above. English Translation, International Translators.
Nielsen Earl A.
Schoenberg Franklyn
Union Carbide Corporation
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