US 4,302,551 A · Process for the preparation of cellular polymers having urethane groups, isocyanurate groups, or both

Abstract

This invention relates to a process for preparing cellular polymers having urethane groups, isocyanurate groups, or both. The cellular polymers are prepared by reacting an organic polyisocyanate with certain polymer dispersions in the presence of a blowing agent. The polymer dispersions comprise (a) as a continuous phase, a polyol having a functionality of 2 to 8 and a hydroxyl number of 150 to 700; and (b) as a dispersed phase, an organic compound having (a) at least one Zerewitinoff active hydrogen atom, (b) a melting point of 30.degree. C. to 260.degree. C., and (c) a molecular weight of 178 to 100,000.

Claims23

Dependent claims

A process for the preparation of cellular polymers having urethane groups, isocyanurate groups, or both comprising reacting an organic polyisocyanate with a polymer dispersion in the presence of a blowing agent and catalyst wherein the polymer dispersion comprises

(a) as a continuous phase, a polyol having a functionality of 2 to 8 and a hydroxyl number of 150 to 700, and
(b) as a disperse phase, an organic compound having
1. at least one Zerewitinoff active hydrogen atom,
2. a melting point of 30.degree. C. to 260.degree. C., and
3. a molecular weight of 178 to 100,000.

2 more elements

A cellular polymer having urethane groups, isocyanate groups, or both prepared by

reacting an organic polyisocyanate with a polymer dispersion in the presence of a blowing agent and catalyst wherein the polymer dispersion comprises
(a) as a continuous phase, a polyol having a functionality of 2 to 8 and a hydroxyl number of 150 to 700, and
(b) as a disperse phase, an organic compound having
1. at least one Zerewitinoff active hydrogen atom,
2. a melting point of 30.degree. C. to 260.degree. C., and
3. a molecular weight of 178 to 100,000.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

06/218,483Filed 22 Dec 1980

Priority

DE 300146217 Jan 1980

Granted

24 Nov 1981

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

C08G 18/4804
Polyethers: two or more polyethers of different physical or chemical nature
C08G 18/4009
High-molecular-weight compounds: two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
C08G 18/4202
Polycondensates having carboxylic or carbonic ester groups in the main chain: two or more polyesters of different physical or chemical nature
C08G 18/60
High-molecular-weight compounds: polyamides or polyester-amides

Process for the preparation of cellular polymers having urethane groups, isocyanurate groups, or both

Life of this patent

Process for the preparation of cellular polymers having urethane groups, isocyanurate groups, or both

Life of this patent

Abstract

Claims23