Patent US1101972A successfully refreshed from Google Patents.
Patent US4797429A successfully refreshed from Google Patents.
US4797429A
Expired / Lapsed
US
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Bromine-containing polyols
Assignee: Imperial Chemical Industries Ltd
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Filing: 1987-03-11
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Granted: 1989-01-10
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Expires: 2007-03-11
Abstract
Abstract New Mannich bases of the formula ##STR1## wherein each of R 1 and R 2 , independently, represents a hydroxyalkyl radical, and to oxyalkylation derivatives of the formula ##STR2## wherein each of a, b and c represents zero or a positive integer, their sum being in the range from 3 to 8, and wherein each A radical represents independently a propylene or ethylene radical. The compounds according to the invention are useful for the manufacture of rigid polyurethane foams.
Inventors
- 👤 David Thorpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:03
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5033; C08G18/54; C08G18/546; C08G2110/00; C08G2110/0025
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
21 words
A Mannich base of the formula: ##STR8## wherein each of R 1 and R 2 , independently, represents a hydroxyalkyl radical.
Claim 2
Dependent Claim
21 words
A Mannich base of the formula: ##STR8## wherein each of R 1 and R 2 , independently, represents a hydroxyalkyl radical.
Claim 3
Dependent Claim
11 words
A Mannich base according to claim 1 having the formula: ##STR9##
Claim 4
Dependent Claim
40 words
An oxyalkylation product of a Mannich base according to the formula: ##STR10## or the formula: ##STR11## wherein each of R 1 and R 2 , independently, represents a hydroxyalkyl radical, and wherein R 3 represents hydrogen or a hydroxyalkyl radical.
Claim 5
Dependent Claim
40 words
An oxyalkylation product of a Mannich base according to the formula: ##STR10## or the formula: ##STR11## wherein each of R 1 and R 2 , independently, represents a hydroxyalkyl radical, and wherein R 3 represents hydrogen or a hydroxyalkyl radical.
Claim 6
Dependent Claim
49 words
A 2,4-dibromo, 6-aminomethyl phenol derivative of the formula: ##STR12## wherein each of a, b and c represents zero or a positive integer, their sum being in the range from 3 to 8, preferably from 4 to 5, and wherein each A radical represents independently a propylene or ethylene radical.
Claim 7
Dependent Claim
49 words
A 2,4-dibromo, 6-aminomethyl phenol derivative of the formula: ##STR12## wherein each of a, b and c represents zero or a positive integer, their sum being in the range from 3 to 8, preferably from 4 to 5, and wherein each A radical represents independently a propylene or ethylene radical.
Claim 8
Dependent Claim
52 words
A reaction product of a Mannich base of formula: ##STR13## or of formula: ##STR14## wherein each of R 1 and R 2 , independently, represents a hydroxyalkyl radical, and wherein R 3 represents hydrogen or a hydroxyalkyl radical, with propylene oxide and/or ethylene oxide, having a hydroxyl number from 230 to 410.
Claim 9
Dependent Claim
52 words
A reaction product of a Mannich base of formula: ##STR13## or of formula: ##STR14## wherein each of R 1 and R 2 , independently, represents a hydroxyalkyl radical, and wherein R 3 represents hydrogen or a hydroxyalkyl radical, with propylene oxide and/or ethylene oxide, having a hydroxyl number from 230 to 410.
Claim 10
Dependent Claim
17 words
A reaction product according to claim 5 having a hydroxyl number in the range 300 to 350.
Claim 11
Dependent Claim
21 words
A reaction product of the Mannich base of claim 2 with from 1 to 6 moles of propylene oxide per mole.
Claim 12
Dependent Claim
21 words
A reaction product of the Mannich base of claim 2 with from 2 to 3 moles of propylene oxide per mole.
Claim 13
Independent Claim
47 words
A method for the preparation of polyurethane foam which comprises reacting an organic polyisocyanate with a polyol component comprising from 10 to 100% by weight of an oxyalkylation product according to any one of claims 3 to 8 and from 90 to 0% of a second polyol.
Claim 14
Dependent Claim
10 words
Polyurethane foams prepared according to the method of claim 9.
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) | 1992-01-10 | 1992-07-11 | 1993-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-10 | 1996-07-11 | 1997-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-10 | 2000-07-11 | 2001-01-10 | $7700.00 | Window Closed / Lapsed |