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특허 상세정보

Foaming system for rigid urethane and isocyanurate foams

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08G-018/14   
미국특허분류(USC) 521/131 ; 252/18215 ; 252/18224
출원번호 US-0350184 (1989-05-10)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 54  인용 특허 : 3
초록

This invention relates to rigid closed-celled polyisocyanate-based foams exhibiting improved dimensional stability and a process for their preparation. In particular, it relates to foams containing within their cells, when initially prepared, a gas mixture comprising theoretically from about 5 to 70 mole percent carbon dioxide and from about 40 to about 95 mole percent of an organic compound mixture. The organic compound mixture itself, comprises (a) from 40 to 95 mole percent of an organic compound having a boiling point greater than or equal to about 2...

대표
청구항

A process for preparing a rigid closed-celled polyisocyanate-based foam by reacting at least one organic polyisocyanate with at least one active hydrogen-containing compound in the presence of a blowing agent composition characterized in that the composition comprises: (a) from about 40 to about 95 mole percent based on components (a) and (b) of at least one organic compound having a boiling point of at least about 283K, and (b) from about 5 to about 60 mole percent based on components (a) and (b) of at least one organic compound having a boiling point l...

이 특허를 인용한 특허 피인용횟수: 54

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