Patent US4516109A successfully refreshed from Google Patents.
Patent US4525488A successfully refreshed from Google Patents.
US4525488A
Expired / Lapsed
US
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Preparation of polyaddition products of Mannich condensates and polyisocyanates in polyols and their use in polyurethanes
Assignee: Dow Chemical Co
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Filing: 1984-09-13
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Granted: 1985-06-25
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Expires: 2004-09-13
Abstract
Abstract A stable dispersion of polyaddition products (also called polyurethane polymer polyols) may be made by reacting a Mannich condensate with an organic polyisocyanate in a polyether polyol. The Mannich condensate is made by reacting a phenol with an alkanolamine and formaldehyde and should not be subsequently water-stripped or alkoxylated. If the Mannich condensate has its water content removed, the ultimate dispersion will be unstable and will phase separate. These dispersions are useful in the production of polyurethane foams.
Inventors
- 👤 Michael Cuscurida
- 👤 George P. Speranza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:36
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/329; C08G18/08; C08G18/0838; C08G18/0842; C08G18/0861; C08G18/0871; C08G18/0876; C08L; C08L75/00; C08L75/04; Y; Y10; Y10S; Y10S516/00; Y10S516/924
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
50 words
A stable dispersion of polyaddition products made by the reaction of a. a Mannich condensate made by reacting a phenol with an alkanolamine and formaldehyde, in the absence of subsequent water removal and the absence of subsequent alkylene oxide addition, and b. an organic polyisocyanate in c. a polyether polyol.
Claim 2
Dependent Claim
50 words
A stable dispersion of polyaddition products made by the reaction of a. a Mannich condensate made by reacting a phenol with an alkanolamine and formaldehyde, in the absence of subsequent water removal and the absence of subsequent alkylene oxide addition, and b. an organic polyisocyanate in c. a polyether polyol.
Claim 3
Dependent Claim
29 words
The stable dispersion of claim 1 in which the ratio of hydroxyl equivalents in the Mannich condensate to isocyanate equivalents in the organic polyisocyanate ranges from 1/1 to 2/1.
Claim 4
Dependent Claim
22 words
The stable dispersion of claim 1 in which the Mannich condensate is made by reacting phenol or nonylphenol with diethanolamine and formaldehyde.
Claim 5
Dependent Claim
19 words
The stable dispersion of claim 1 in which the mole ratio of phenol:alkanolamine:formaldehyde ranges from about 1:1:1 to 1:2:1.
Claim 6
Dependent Claim
23 words
The stable dispersion of claim 1 in which the polyether polyol has a molecular weight in the range of about 3,000 to 8,000.
Claim 7
Dependent Claim
27 words
The stable dispersion of claim 1 made at a temperature in the range of 25° to 100° C. and at a pressure from atmospheric to 100 psig.
Claim 8
Independent Claim
63 words
A method for making a stable dispersion of polyaddition products comprising a. reacting a phenol with an alkanolamine and formaldehyde, in the absence of subsequent water removal and in the absence of subsequent alkylene oxide addition, to give a Mannich condensate, and b. reacting the Mannich condensate with an organic polyisocyanate in a polyether polyol, to make a stable dispersion of polyaddition products.
Claim 9
Independent Claim
63 words
A method for making a stable dispersion of polyaddition products comprising a. reacting a phenol with an alkanolamine and formaldehyde, in the absence of subsequent water removal and in the absence of subsequent alkylene oxide addition, to give a Mannich condensate, and b. reacting the Mannich condensate with an organic polyisocyanate in a polyether polyol, to make a stable dispersion of polyaddition products.
Claim 10
Dependent Claim
28 words
The method of claim 7 in which the ratio of hydroxyl equivalents in the Mannich condensate to isocyanate equivalents in the organic polyisocyanate ranges from 1/1 to 2/1.
Claim 11
Dependent Claim
25 words
The method of claim 7 in which the phenol is selected from the group consisting of phenol itself and nonylphenol and the alkanolamine is diethanolamine.
Claim 12
Dependent Claim
18 words
The method of claim 7 in which the mole ratio of phenol:alkanolamine:formaldehyde ranges from about 1:1:1 to 1:2:1.
Claim 13
Dependent Claim
22 words
The method of claim 7 in which the polyether polyol has a molecular weight in the range of about 3,000 to 8,000.
Claim 14
Dependent Claim
26 words
The method of claim 7 performed at a temperature in the range of 25° to 100° C. and at a pressure from atmospheric to 100 psig.
Claim 15
Independent Claim
73 words
A method for producing a polyurethane which comprises a. reacting a phenol with an alkanolamine and formaldehyde, in the absence of subsequent water removal and in the absence of subsequent alkylene oxide addition, to give a Mannich condensate, b. reacting the Mannich condensate with an organic polyisocyanate in a polyether polyol to make a stable dispersion of polyaddition products, and c. subsequently reacting the stable dispersion of polyaddition products with an organic polyisocyanate.
Claim 16
Independent Claim
73 words
A method for producing a polyurethane which comprises a. reacting a phenol with an alkanolamine and formaldehyde, in the absence of subsequent water removal and in the absence of subsequent alkylene oxide addition, to give a Mannich condensate, b. reacting the Mannich condensate with an organic polyisocyanate in a polyether polyol to make a stable dispersion of polyaddition products, and c. subsequently reacting the stable dispersion of polyaddition products with an organic polyisocyanate.
Claim 17
Dependent Claim
28 words
The method of claim 13 in which the ratio of hydroxyl equivalents in the Mannich condensate to isocyanate equivalents in the organic polyisocyanate ranges from 1/1 to 2/1.
Claim 18
Dependent Claim
25 words
The method of claim 13 in which the phenol is selected from the group consisting of phenol itself and nonylphenol and the alkanolamine is diethanolamine.
Claim 19
Dependent Claim
18 words
The method of claim 13 in which the mole ratio of phenol:alkanolamine:formaldehyde ranges from about 1:1:1 to 1:2:1.
Claim 20
Dependent Claim
22 words
The method of claim 13 in which the polyether polyol has a molecular weight in the range of about 3,000 to 8,000.
Claim 21
Dependent Claim
26 words
The method of claim 13 performed at a temperature in the range of 25° to 100° C. and at a pressure from atmospheric to 100 psig.
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) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |