Sound-insulating leather powder compositions

Details Sound-insulating leather powder compositions Sound-insulating leather powder compositions

1984-04-13

1985-10-01

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

524 10, 524 11, 521102, 521181, 521187, 521188, C08J 900

Patent

active

045446768

ABSTRACT:
The invention relates to new sound- and heat-insulating compositions, which comprise a finely dispersed leather powder of animal origin, a phenoplast resin or an aminoplast resin and optionally, together with the latter one, urea and/or a modified furane resin and optionally a wetting and/or foaming agent and an acid catalyst and optionally water.
The compositions according to the invention have remarkable noise- and heat-insulating properties.

REFERENCES:
patent: 1263297 (1918-04-01), Vargyas
patent: 1719802 (1929-07-01), Ferretti
patent: 2373401 (1945-04-01), King
patent: 2601671 (1952-06-01), Wilson et al.
patent: 2798054 (1957-07-01), Simon et al.
patent: 3986988 (1976-10-01), Sedlak et al.

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