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특허 상세정보

Reduced VOC emission alkenyl aromatic polymer foams and processes

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29C-044/20    B29C-044/00   
미국특허분류(USC) 264/050; 264/053; 264/321; 264/DIG.5; 521/079
출원번호 US-0336345 (2003-01-03)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Baker Botts L.L.P.
인용정보 피인용 횟수 : 9  인용 특허 : 86
초록

A method for producing an alkenyl aromatic polymer foam structure that comprises melting at least one alkenyl aromatic polymer resin. An effective amount of blowing agent mixture is dissolved in the at least one alkenyl aromatic polymer. The blowing agent mixture comprises at least one VOC blowing agent and acetone. The majority by mole percent of the VOC blowing agent is selected from n-butane, iso-butane, propane and combinations thereof. An extrudate is formed comprising the at least one alkenyl aromatic polymer resin, the at least one VOC blowing ag...

대표
청구항

What is claimed is: 1. A method for producing an alkenyl aromatic polymer foam structure comprising: melting at least one alkenyl aromatic polymer resin; dissolving a blowing agent mixture in the at least one alkenyl aromatic polymer resin, wherein the blowing agent mixture is less than about 4.5 wt. % based on a total mixture of the at least one alkenyl aromatic polymer resin and the blowing agent mixture and wherein the blowing agent mixture comprises at least one volatile organic compound (VOC) blowing agent and acetone, the VOC blowing agent being s...

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