Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1989-09-19
1991-02-19
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 841, 521 91, 521134, 521140, 521143, 521150, 521123, C08J 900
Patent
active
049945009
ABSTRACT:
Active and elastic foamed materials useful for heating elements and medical materials comprising a foamed matrix of natural rubber, synthetic rubber or synthetic resin and an active substance contained therein, the active substance being zircon or zirconium complex compound and the content of said substance being 20-150 wt % to the foamed matrix.
REFERENCES:
patent: 4826883 (1989-05-01), Knobel et al.
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