Flame retardant diaphragm for acoustic transducers

Details Flame retardant diaphragm for acoustic transducers Flame retardant diaphragm for acoustic transducers

1982-05-26

1984-09-18

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

181169, 523460, 523462, 524 14, 524101, 524341, H04R 700

Patent

active

044725434

ABSTRACT:
A flame retardant diaphragm for speakers, etc. comprises an admixture of natural fibers and inorganic fibers. The admixture is impregnated with a thermosetting resin and an organic bromine compound, and heat-treated under pressure. The organic bromine compound acts as a flame retarder.

REFERENCES:
patent: 3280216 (1966-10-01), Partansky
patent: 3798057 (1974-03-01), Polovina
patent: 3907063 (1975-09-01), Nakazawa et al.
patent: 3930130 (1975-12-01), Boszor
patent: 4107230 (1978-08-01), Turnbo et al.
patent: 4282136 (1981-08-01), Hunt et al.
patent: 4331780 (1982-05-01), Brady

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