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US4668734A
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Stable dispersions of polyureas and/or polyhydrazo-dicarbonamides in relatively high molecular weight hydroxyl-group containing materials, a process for the production thereof and the use thereof for the production of polyurethane plastics
Assignee: Bayer AG
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Filing: 1985-12-20
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Granted: 1987-05-26
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Expires: 2005-12-20
Abstract
Abstract The present invention is directed to a stable dispersion of a polyurea and/or a polyhydrazodicarbonamide in a relatively high molecular weight hydroxyl-group containing material, which dispersion has a solids content of from 5 to 50 percent by weight and which is obtained by reacting (a) an organic di- and/or polyisocyanate with (b) an amine-functional material comprising an addition product of (1) acrylonitrile and (2) a member selected from the group consisting of (i) hydrazine, (ii) aliphatic di- or polyamines containing at least two primary amino groups, (iii) cycloaliphatic di- or polyamines containing at least two primary amino groups, (iv) araliphatic di- or polyamines containing at least two primary amino groups, and (v) mixtures thereof, the ratio of (1) to (2) being at least one mol of (1) per mol of (2) and at most one mol of (1) for each nitrogen atom contained in (2) per mol of (2), the reaction of component (a) and component (b) being conducted at a temperature of from 30° to 170° C., at an equivalent ratio of components (a) to (b) of from 0.8:1 to 1.5:1, and in the presence of (c) a relatively high molecular weight, hydroxyl-group containing material. The invention also relates to the production and use of such dispersions.
Inventors
- 👤 Manfred Dietrich
- 👤 Klaus K/o/ nig
- 👤 Hans Hettel
- 👤 Peter Seifert
- 👤 Peter Vehlewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:21
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3838; C08G18/08; C08G18/0838; C08G18/0842; C08G18/0861; C08G18/0871; C08G18/0876; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
190 words
A stable dispersion of a polyurea and/or a polyhydrazodicarbonamide in a relatively high molecular weight hydroxyl-group containing material, which dispersion has a solids content of from 5 to 50 percent by weight and which is obtained by reacting (a) an organic di- and/or polyisocyanate with (b) an amine-functional material comprising an addition product of (1) acrylonitrile and (2) a member selected from the group consisting of (i) hydrazine, (ii) aliphatic di- or polyamines containing at least two primary amino groups, (iii) cycloaliphatic di- or polyamines containing at least two primary amino groups, (iv) araliphatic di- or polyamines containing at least two primary amino groups, and (v) mixtures thereof, the ratio of (1) to (2) being at least one mol of (1) per mol of (2) and at most one mol of (1) for each nitrogen atom contained in (2) per mol of (2), the reaction of component (a) and component (b) being conducted at a temperature of from 30° to 170° C., at an equivalent ratio of components (a) to (b) of from 0.8:1 to 1.5:1, and in the presence of (c) a relatively high molecular weight, hydroxyl-group containing material.
Claim 2
Dependent Claim
190 words
A stable dispersion of a polyurea and/or a polyhydrazodicarbonamide in a relatively high molecular weight hydroxyl-group containing material, which dispersion has a solids content of from 5 to 50 percent by weight and which is obtained by reacting (a) an organic di- and/or polyisocyanate with (b) an amine-functional material comprising an addition product of (1) acrylonitrile and (2) a member selected from the group consisting of (i) hydrazine, (ii) aliphatic di- or polyamines containing at least two primary amino groups, (iii) cycloaliphatic di- or polyamines containing at least two primary amino groups, (iv) araliphatic di- or polyamines containing at least two primary amino groups, and (v) mixtures thereof, the ratio of (1) to (2) being at least one mol of (1) per mol of (2) and at most one mol of (1) for each nitrogen atom contained in (2) per mol of (2), the reaction of component (a) and component (b) being conducted at a temperature of from 30° to 170° C., at an equivalent ratio of components (a) to (b) of from 0.8:1 to 1.5:1, and in the presence of (c) a relatively high molecular weight, hydroxyl-group containing material.
Claim 3
Dependent Claim
19 words
The dispersion of claim 1 wherein component (a) contains up to 40 mol % of one or more monoisocyanates.
Claim 4
Dependent Claim
35 words
The dispersion of claim 1 wherein component (b) comprises said addition product and up to 50% by weight of (i) a primary and/or secondary amino-group containing di- or polyamine, and/or (ii) hydrazines and/or (iii) hydrazides.
Claim 5
Dependent Claim
21 words
The dispersion of claim 3, wherein said component (b) contains up to 40 mol % of a monoamine or an alkanolamine.
Claim 6
Dependent Claim
39 words
The dispersion of claim 1 wherein the reaction of components (a) and (b) is conducted in the presence of component (c) and in the presence of (d) water, relatively low molecular weight hydroxyl-group containing compounds, catalysts and/or flameproofing agents.
Claim 7
Dependent Claim
75 words
The dispersion of claim 1, wherein component (c) comprises a relatively high molecular weight polyether polyol, at least 95% of the OH-groups of which are secondary, and wherein said dispersion has a solids content of from 5 to 30% by weight at an equivalent ratio of components (a) to (b) of from 0.8 to 1.5 and a solids content of from 30 to 50% by weight at an equivalent ratio of from 0.8 to 1.3.
Claim 8
Dependent Claim
75 words
The dispersion of claim 1, wherein component (c) comprises a relatively high molecular weight polyether polyol, at least 20% of the OH-groups of which are primary, and wherein said dispersion has a solids content of from 5 to 15% by weight at an equivalent ratio of components (a) to (b) of from 0.8 to 1.3 and a solids content of from 15 to 40% by weight at an equivalent ratio of from 0.8 to 1.1.
Claim 9
Dependent Claim
192 words
A process for preparing a stable dispersion of a polyurea and/or a polyhydrazodicarbonamide in a relatively high molecular weight hydroxyl-group containing material, which dispersion has a solids content of from 5 to 50 percent by weight, said process comprising reacting (a) an organic di- and/or polyisocyanate with (b) an amine-functional material comprising an addition product of (1) acrylonitrile and (2) a member selected from the group consisting of (i) hydrazine, (ii) aliphatic di- or polyamines containing at least two primary amino groups, (iii) cycloaliphatic di- or polyamines containing at least two primary amino groups, (iv) araliphatic di- or polyamines containing at least two primary amino groups, and (v) mixtures thereof, the ratio of (1) to (2) being at least one mol of (1) per mol of (2) and at most one mol of (1) for each nitrogen atom contained in (2) per mol of (2), the reaction of component (a) and component (b) being conducted at a temperature of from 30° to 170° C., at an equivalent ratio of components (a) to (b) of from 0.8:1 to 1.5:1, and in the presence of (c) a relatively high molecular weight, hydroxyl-group containing material.
Claim 10
Dependent Claim
192 words
A process for preparing a stable dispersion of a polyurea and/or a polyhydrazodicarbonamide in a relatively high molecular weight hydroxyl-group containing material, which dispersion has a solids content of from 5 to 50 percent by weight, said process comprising reacting (a) an organic di- and/or polyisocyanate with (b) an amine-functional material comprising an addition product of (1) acrylonitrile and (2) a member selected from the group consisting of (i) hydrazine, (ii) aliphatic di- or polyamines containing at least two primary amino groups, (iii) cycloaliphatic di- or polyamines containing at least two primary amino groups, (iv) araliphatic di- or polyamines containing at least two primary amino groups, and (v) mixtures thereof, the ratio of (1) to (2) being at least one mol of (1) per mol of (2) and at most one mol of (1) for each nitrogen atom contained in (2) per mol of (2), the reaction of component (a) and component (b) being conducted at a temperature of from 30° to 170° C., at an equivalent ratio of components (a) to (b) of from 0.8:1 to 1.5:1, and in the presence of (c) a relatively high molecular weight, hydroxyl-group containing material.
Claim 11
Dependent Claim
19 words
The process of claim 8 wherein component (a) contains up to 40 mol % of one or more monoisocyanates.
Claim 12
Dependent Claim
35 words
The process of claim 8 wherein component (b) comprises said addition product and up to 50% by weight of (i) a primary and/or secondary amino-group containing di- or polyamine, and/or (ii) hydrazines and/or (iii) hydrazides.
Claim 13
Dependent Claim
21 words
The process of claim 10, wherein said component (b) contains up to 40 mol % of a monoamine or an alkanolamine.
Claim 14
Dependent Claim
39 words
The process of claim 8 wherein the reaction of components (a) and (b) is conducted in the presence of component (c) and in the presence of (d) water, relatively low molecular weight hydroxyl-group containing compounds, catalysts and/or flameproofing agents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |