High temperature phenolic resins and friction elements prepared

Details High temperature phenolic resins and friction elements prepared High temperature phenolic resins and friction elements prepared

1981-09-18

1983-07-26

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

525492, 5255015, 528 1, 528160, C08G 1404

Patent

active

043954987

ABSTRACT:
High temperature phenolic resins suited for use for example in an automotive or similar brake or in a clutch, are provided by a blend of the reaction product of a phenolic compound, naphthalenic compound, and formaldehyde with selected prior art resins. The mole ratio range of naphthalenic compound: phenolic compound: formaldehyde is about 1: 1:0.8-5:1-10. Friction particles and friction elements can be prepared from said reaction product optionally being blended with said selected prior art resins. An improved method of making friction elements is also provided which uses such binder.

REFERENCES:
patent: 2330827 (1943-10-01), Kester
patent: 2339271 (1944-01-01), Kester
patent: 2954360 (1960-09-01), Krzikalla et al.
patent: 3290271 (1966-12-01), O'Brochta
patent: 3406132 (1968-10-01), Winegartner
patent: 3920594 (1975-11-01), Sato
patent: 3947393 (1976-03-01), Sato
patent: 4096108 (1978-06-01), Webb et al.
patent: 4110279 (1978-08-01), Nelson et al.

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