Method of forming fire retardant insulating material from plasti

Details Method of forming fire retardant insulating material from plasti Method of forming fire retardant insulating material from plasti

1986-03-07

1987-12-22

Anderson, Philip

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 26, 264 453, 264 53, 264DIG2, 264DIG7, 521136, 521181, B29C 6772, B29C 6716, B29C 3910, B29C 6504

Patent

active

047147156

ABSTRACT:
Fire retardant polystyrene insulating material is manufactured from expandable polystyrene scrap in admixture with a phenol-formaldehyde or melamine-formaldehyde resin in resole form, the resin containing a blowing agent and a surfactant. The insulating material is formed from the scrap-resin mix by applying dielectric heating to foam the resin, and cure the foamed resin to a closed cell structure.

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patent: 4243761 (1981-01-01), Savey
patent: 4256803 (1981-03-01), Savey et al.
patent: 4273887 (1981-06-01), Wolff
patent: 4596682 (1986-06-01), Mosier

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