초록 ▼

Polyol blend comprising a polyester polyol, a tertiary amine catalyst and an organic carboxylic acid wherein said carboxylic acid contains at least one OH, SH, NH2 or NHR functional group, wherein R is an alkyl, cycloalkyl or aryl group and the use of said polyol blend in the manufacture of rigid po

Polyol blend comprising a polyester polyol, a tertiary amine catalyst and an organic carboxylic acid wherein said carboxylic acid contains at least one OH, SH, NH2 or NHR functional group, wherein R is an alkyl, cycloalkyl or aryl group and the use of said polyol blend in the manufacture of rigid polyurethane foams.

대표청구항 ▼

1. An isocyanate-reactive composition comprising:(i) at least 10 wt %, relative to the total weight of isocyanate-reactive compounds, of a polyester polyol having an average functionality of from 1.8 to 8, a hydroxyl number of from 15 to 750 mg KOH/g, and a molecular weight of 400 to 10,000; (ii) 0.

1. An isocyanate-reactive composition comprising:(i) at least 10 wt %, relative to the total weight of isocyanate-reactive compounds, of a polyester polyol having an average functionality of from 1.8 to 8, a hydroxyl number of from 15 to 750 mg KOH/g, and a molecular weight of 400 to 10,000; (ii) 0.1-5 wt %, relative to the total weight of the isocyanate-reactive composition, of an amine catalyst; (iii) 0.1-5 wt %, relative to the total weight of the isocyanate-reactive composition, of at least one carboxylic acid represented by the formula HO-R'-(COOH)m, wherein R' represents a linear or branched aliphatic hydrocarbon having 1 to 5 carbon atoms, and m represents the value 1, 2, or 3; and (iv) a blowing agent.