Polyols useful for preparing water blown rigid polyurethane foam
作者： Stanley E. Moore , Nelson F. Molina
DOI:
关键词: Viscosity 、 Formaldehyde 、 Materials science 、 Organic chemistry 、 Polyurethane 、 Ethylene oxide 、 Propylene oxide 、 Phenol
摘要: Mannich polyols having a viscosity of from 300 to 3,500 cps (0.3 3.5 Pa*s) at 25° C. are prepared by admixing phenol, an alkanolamines, and formaldehyde mixed in molar ratios 1:1:1 1:2.2:2.2 resulting initiator which can be alkoxylated using mixture ethylene oxide propylene prepare that have nominal functionality 3 5.4.
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