An object of the present invention is to provide a polyoxyalkylene polyol and a polyoxyalkylene monool, capable of producing a urethane elastomer and a urethane foam which are sufficiently excellent in mechanical properties and moisture resistance.
The present invention is directed to a polyoxyalkylene polyol or monool (S), which is an alkylene oxide adduct of an active hydrogen-containing compound (H), wherein 40% or more of hydroxyl groups located at the terminal are primary hydroxyl group-containing groups represented by the general formula (1) shown below, and a hydroxyl value x, the total degree of unsaturation y and the content of ethylene oxide z satisfy a relationship of the mathematical expression (1).
[In the general formula (1), R
1
represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group or a phenyl group, each of which may be substituted with a halogen atom or an aryl group.]
y
≦28.3×
x
−2
×(100−
z
)/100 (1)
[In the mathematical expression (1), x represents a hydroxyl value, y represents the total degree of unsaturation, and z is the content of ethylene oxide based on the weight of (S) and is from 0 to 50% by weight.
本发明的目的是提供一种聚氧烷基
聚醚醇和一种聚氧烷基单醇,能够生产出机械性能和耐湿性足够优异的聚
氨酯弹性体和聚
氨酯泡沫。本发明涉及一种聚氧烷基
聚醚醇或单醇(S),它是一种活性氢含有物(H)的烷基氧化物加合物,在其末端的羟基中,40%或更多的羟基是由下面的通式(1)表示的主要羟基含有基团,且羟值x、总不饱和度y和
乙烯氧化物含量z满足数学表达式(1)的关系。
【在通式(1)中,R1代表氢原子、含有1至12个碳原子的烷基基团、环烷基或苯基,每个基团可能被卤素原子或芳基取代。】
y≦28.3×x−2×(100−z)/100 (1)
【在数学表达式(1)中,x代表羟值,y代表总不饱和度,z是基于(S)的
乙烯氧化物含量,按重量计为0至50%。】