Method for producing a rigid foamed synthetic resin
First Claim
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1. A method for producing a closed cell rigid foamed synthetic resin, comprising:
- reacting a polyol with a polyisocyanate compound in the presence of 4-16 parts by mass of only water as a blowing agent, based on 100 parts by mass of the polyol, a catalyst, and a fluorine-containing compound of the Formula 1;
Rf—
O-(A-O)n—
R
Formula 1
wherein in the Formula 1, Rf is a C2-27 polyfluoroalkyl group or a group containing an oxygen atom or a nitrogen atom in a carbon-carbon bond of said polyfluoroalkyl group, n is an integer of from 1 to 100, A is an alkylene group having a carbon number in the straight chain portion between bonds of from 2 to 4, provided that when n is from 2 to 100, the plurality of A may be the same or different, and R is a hydrogen atom, an C1-18 alkyl group or a C1-18 acyl group.
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Abstract
A method for producing a rigid foamed synthetic resin, which comprises reacting a polyol with a polyisocyanate compound in the presence of water, a catalyst and a fluorine-containing compound of the formula 1:
Rf—O-(A-O)n—R Formula 1
where in the formula 1, Rf is a C2-27 fluorine-containing organic group, n is an integer of from 1 to 100, A is an alkylene group having a carbon number in the straight chain portion between bonds of from 2 to 4, provided that when n is from 2 to 100, the plurality of A may be the same or different, and R is a hydrogen atom, a C1-18 alkyl group or a C1-18 acyl group.
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9 Claims
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1. A method for producing a closed cell rigid foamed synthetic resin, comprising:
reacting a polyol with a polyisocyanate compound in the presence of 4-16 parts by mass of only water as a blowing agent, based on 100 parts by mass of the polyol, a catalyst, and a fluorine-containing compound of the Formula 1;
Rf—
O-(A-O)n—
R
Formula 1
wherein in the Formula 1, Rf is a C2-27 polyfluoroalkyl group or a group containing an oxygen atom or a nitrogen atom in a carbon-carbon bond of said polyfluoroalkyl group, n is an integer of from 1 to 100, A is an alkylene group having a carbon number in the straight chain portion between bonds of from 2 to 4, provided that when n is from 2 to 100, the plurality of A may be the same or different, and R is a hydrogen atom, an C1-18 alkyl group or a C1-18 acyl group.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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