Blowing agent blends and use thereof in the preparation of...

Details Blowing agent blends and use thereof in the preparation of... Blowing agent blends and use thereof in the preparation of...

C - Chemistry, Metallurgy

08

J

C08J 9/14 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2260868

Blowing agent, active hydrogen-containing compositions, commonly referred to as B-side compositions or blends, and their use for the production of polyurethane and polyisocyanurate foams are disclosed. More particularly, the disclosure relates to blowing agent blend, foaming process and polyisocyanate- based foams which utilize environmentally friendly blowing agent compositions comprising a major proportion of 1,1,2,2-tetrafluoroethane (HFC-134).

Compositions contenant un agent gonflant et un composé d'hydrogène actif, désignées habituellement compositions ou mélanges côté B, et leur utilisation pour préparer des mousses de polyuréthane et de polyisocyanurate. L'invention concerne plus particulièrement un mélange d'agents gonflants, un procédé de moussage et des mousses à base de polyisocyanate mettant en application des compositions contenant un agent gonflant sans danger pour l'environnement et une proportion majeure de 1,1,2,-tétrafluoroéthane (HFC-134).

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