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US4147680A
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Production of polyurethane resins using as active hydrogen material a stable dispersion of ionic polyisocyanate-polyaddition products in hydroxyl containing compounds as a dispersing agent
Assignee: Bayer AG
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Filing: 1976-11-10
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Granted: 1979-04-03
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Expires: 1996-11-10
Abstract
Abstract The present invention relates to the production of polyurethane resins and foams from stable dispersions of ionic polyisocyanate-polyaddition products in a hydroxyl containing compound as dispersing agent which are formed by the process which comprises reacting: (1) organic polyisocyanate with (2) compounds having primary and/or secondary amino grops and/or primary hydroxyl groups in (3) compounds having at least one hydroxyl group, With the proviso that compounds (3) have secondary hydroxyl groups if compounds with primary hydroxyl groups are used as compound (2), and further characterized in that at least one of the components (1) or (2) has groups which are ionic and/or capable of salt formation.
Inventors
- 👤 Artur Reischl
- 👤 Gert Jabs
- 👤 Alberto C. Gonzalez-Dorner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:34
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/84; C08G18/08; C08G18/0804; C08G18/10; C08G18/12; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S524/00; Y10S524/923
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
45 words
In a process for the production of polyurethane resins in which polyisocyanates are reacted with materials containing active hydrogen atoms, the improvement wherein the active hydrogen containing material is a stable dispersion of an ionic polyisocyanate-polyaddition product in a hydroxyl containing compound as dispersing agent.
Claim 2
Dependent Claim
45 words
In a process for the production of polyurethane resins in which polyisocyanates are reacted with materials containing active hydrogen atoms, the improvement wherein the active hydrogen containing material is a stable dispersion of an ionic polyisocyanate-polyaddition product in a hydroxyl containing compound as dispersing agent.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the polyurethane resin is a foam produced with the addition of a blowing agent.
Claim 4
Dependent Claim
87 words
The process of claim 1 wherein said polyisocyanatepolyaddition product is formed by the process which comprises reacting (1) organic polyisocyanates with (2) compounds having primary and/or secondary amino groups and/or primary hydroxyl groups in (3) compounds having at least one hydroxy group, with the proviso that compounds (3) have secondary hydroxyl groups if compounds with primary hydroxyl groups are used as compound (2), and further characterized in that at least one of the components (1) or (2) has groups which are ionic and/or capable of salt formation.
Claim 5
Dependent Claim
30 words
The process of claim 3 wherein said polyaddition product is formed in the presence of more than 1% by weight of water, based on the total quantity of reaction mixture.
Claim 6
Dependent Claim
16 words
The process of claim 4 wherein from 5 to 50% by weight of water is used.
Claim 7
Dependent Claim
16 words
The process of claim 5 wherein from 10 to 25% by weight of water is used.
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) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |