'polyether siloxanes, use thereof, suitable composition for preparing rigid polyurethane or polyisocyanurate foams, process for preparing rigid polyurethane or polyisocyanurate foams, rigid polyurethane or polyisocyanurate foam materials' use of said foams and cooling apparatus '

摘要

POLYETERSILOXANS, USE OF THE SAME, APPROPRIATE COMPOSITION FOR THE PREPARATION OF RIGID POLYURETHANE OR POLYISOCYANIDE FOAMS, PROCESS FOR PREPARING RIGID POLYURETHANE OR POLYESULIUM SPIDIOUS HYDROID FOAMS OF THESE FOAMS AND COOLING EQUIPMENT. The present invention relates to polyether siloxanes of formula (I) as described below and in the claims which have almost no primary OH groups but predominantly secondary or tertiary OH groups, the use of such polyether siloxanes according to the invention for preparation polyurethane and polyisocyanurate foams, as well as rigid polyurethane or polyisocyanurate foam materials, which are obtained using the polyethersiloxanes.