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Being the non silicone surface active agent null blowing foaming body poly- all pre- mixed composition for the polyurethane or
Being the non silicone surface active agent null blowing foaming body poly- all pre- mixed composition for the polyurethane or
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机译:作为非有机硅表面活性剂,可将发泡体零发泡的聚氨酯或聚氨酯的所有预混合组合物
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摘要
The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a surfactant component which comprises a non-silicone surfactant and is substantially absent of a silicone surfactant, and a tertiary amine catalyst.
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