Method of preparing vegetable oil-modified phenolic resin and la

Details Method of preparing vegetable oil-modified phenolic resin and la Method of preparing vegetable oil-modified phenolic resin and la

1993-08-10

1995-01-10

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

528 86, 528 90, 528 94, 5281115, 528129, 528143, 528230, 528242, 528243, 5282455, 524714, 524724, 524796, 527600, 527602, C08K 541, C08G 834

Patent

active

053807898

ABSTRACT:
A catalyst selected from a perfluorosulfonic acid and an anhydride thereof enables a non-conjugated drying oil to react with a phenol to form a phenol-added vegetable oil without causing hydrolysis of the non-conjugated drying oil. The phenol-added vegetable oil is allowed to react with an aldehyde to form a vegetable oil-modified phenolic resin. A laminate produced by impregnating paper with the vegetable oil-modified phenolic resin and laminating and molding the impregnated paper is excellent in low temperature punching quality and electrical properties and is free from low molecular weight components oozing out the surface of the laminate.

REFERENCES:
patent: 4763133 (1988-08-01), Takemura et al.
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