High productivity, low fugitive VOC emission foam process

Details High productivity, low fugitive VOC emission foam process High productivity, low fugitive VOC emission foam process

1997-10-01

1999-08-17

Cooney, Jr., John M.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252 67, 252 69, 521 79, 521 98, 521130, 521131, 521133, 521146, C08J 904

Patent

active

059394633

ABSTRACT:
A blowing agent for foaming polystyrene consisting essentially of at least one low permeability volatile organic compound, at least one low volatility non-volatile organic compound and, optionally, at least one high volatility non-volatile organic compound. In one embodiment, the low permeability volatile organic compound is selected from the group consisting of isopentane and isobutane, the low volatility non-volatile organic compound is acetone and the high volatility non-volatile organic compound is carbon dioxide. The blowing agent of the present invention may be used to foam a polystyrene foam structure. The blowing agent is directed to achieving low fugitive volatile organic compounds (VOC) emissions.

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