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Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08J-009/00    C08J-009/16   
미국특허분류(USC) 521/079; 521/098; 521/142; 521/146
출원번호 US-0680170 (2007-02-28)
등록번호 US-8309619 (2012-11-13)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Baker Botts L.L.P.
인용정보 피인용 횟수 : 1  인용 특허 : 84
초록
▼

A blowing agent blend for making thermoplastic polymer foams includes methyl formate. The blowing agent blend can further comprise at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent (e.g. an inorganic agent, a hydrocarbon, a halogenated hydrocarbon, a hydrocarbon with polar, functional group(s), water or any combination thereof), or a chemical co-blowing agent, or combinations thereof. The thermoplastic polymer foam can be an alkenyl aromatic polymer foam, e.g. a polystyrene foam. The blowing agent blend includes me...

대표
청구항
▼

1. A process for producing a thermoplastic polymer foam sheet comprising: preparing an expandable polymeric formulation comprising a thermoplastic polymer and a blowing agent blend comprising methyl formate, hydrocarbon, and carbon dioxide, the blowing agent blend comprising about 6 to about 53 weight percent of the methyl formate; andexpanding the formulation to form a substantially closed-cell, dimensionally stable, thermoformable foam sheet that is substantially free of a gas barrier resin. 2. The process of claim 1, wherein preparing the expandable p...

이 특허에 인용된 특허 (84)

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이 특허를 인용한 특허 피인용횟수: 1

  1. Handa, Y. Paul; Francis, Gary A.; Castner, Glenn C.; Zafar, Mohammad. Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams. USP2016099453090.

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