Process for the manufacture of frictional elements and frictiona

Details Process for the manufacture of frictional elements and frictiona Process for the manufacture of frictional elements and frictiona

1987-01-29

1989-05-16

Lieberman, Allan M.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523152, 523155, 523157, 524434, 524435, 524439, C08J 514, C08K 308, C08L 6106, C08L 7700

Patent

active

048310670

ABSTRACT:
A method for the manufacture of shaped frictional elements is provided. The method comprises mixing a first portion of a frictional filler with from 5% to 30% of certain liquid, alkaline, phenol-formaldehyde resins; mixing a second portion of the same or a different frictional filler with a liquid ester curing catalyst for the phenyl-formaldehyde resin; intimately mixing the first and second portions; and allowing the resultant mixture to cure in a mould. A composition comprising a frictional filler, the above resin, and a curing catalyst is also provided. The disclosed method is quick and economical and is carried out at room temperature without the hazards and inconveniences associated with heated moulds.

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C. Blackburn et al., "Experience with Alphaset in High Alloy Steel Production", Proceedings of 1983 Annual Conference, SCRATA, pp. 1:2-1:7.
M. Stevenson, "Recent Developments in Cold Setting Moulding and Coremaking", The British Foundryman; 1981.

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