Patent US4293470A successfully refreshed from Google Patents.
US4293470A
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US
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Stabilizing polyurea polymer polyols by treating with a secondary amine
Assignee: Dow Chemical Co
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Filing: 1980-07-11
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Granted: 1981-10-06
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Expires: 2000-07-11
Abstract
Abstract A polyurea polymer polyol with improved storage stability is made by the reaction of a hydroxyl-containing amine, a polyether polyol of about 3,000 to 8,000 molecular weight and an organic polyisocyanate followed by quenching with a secondary amine. This stable polyurea polymer polyol may be used in the manufacture of flexible polyurethane foams which are firmer and stronger than similar products using conventional polyols.
Inventors
- 👤 Michael Cuscurida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:39
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6688; C08G18/08; C08G18/089; C08G18/10; C08G18/12; C08G18/40; C08G18/409
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
72 words
A polyurea polymer polyol made by reacting a hydroxyl-containing amine, a polyether polyol of about 3000 to 8000 molecular weight and an organic polyisocyanate wherein the amount of polyisocyanate reacted is less than the stoichiometric amount needed to satisfy the hydroxyl group of the hydroxyl-containing amine and the polyether polyol and adding to the reaction product an amount of secondary amine effective to improve the storage stability of said polyurea polymer polyol.
Claim 2
Dependent Claim
72 words
A polyurea polymer polyol made by reacting a hydroxyl-containing amine, a polyether polyol of about 3000 to 8000 molecular weight and an organic polyisocyanate wherein the amount of polyisocyanate reacted is less than the stoichiometric amount needed to satisfy the hydroxyl group of the hydroxyl-containing amine and the polyether polyol and adding to the reaction product an amount of secondary amine effective to improve the storage stability of said polyurea polymer polyol.
Claim 3
Dependent Claim
12 words
A polyol as in claim 1 wherein the hydroxyl-containing amine is monoethanolamine.
Claim 4
Dependent Claim
12 words
A polyol as in claim 1 wherein the hydroxyl-containing amine is diethanolamine.
Claim 5
Dependent Claim
12 words
A polyol as in claim 1 wherein the hydroxyl-containing amine is 2-(2-aminoethoxyethanol).
Claim 6
Dependent Claim
12 words
A polyol as in claim 1 wherein the hydroxyl-containing amine is hydroxyethylpiperazine.
Claim 7
Dependent Claim
12 words
A polyol as in claim 1 wherein the hydroxyl-containing amine is 1-amino-2-propanol.
Claim 8
Dependent Claim
25 words
A polyol as in claim 1 wherein the secondary amine added is has the formula ##STR2## where R is C 1 to C 8 alkyl.
Claim 9
Dependent Claim
12 words
A polyol as in claim 7 wherein the amine added is dibutylamine.
Claim 10
Dependent Claim
12 words
A polyol as in claim 1 wherein the amine added is morpholine.
Claim 11
Dependent Claim
88 words
In a method for producing a polyurea polymer polyol having improved storage stability wherein there is reacted a mixture of a hydroxyl-containing amine, a polyether polyol of about 3000 to 8000 molecular weight and an organic polyisocyanate wherein the amount of polyisocyanate reacted is less than the stoichiometric amount needed to satisfy the hydroxyl groups of the hydroxyl-containing amine and the polyether polyol the improvement which comprises adding to the reaction product an amount of secondary amine effective to improve the storage stability of said polyurea polymer polyol.
Claim 12
Dependent Claim
88 words
In a method for producing a polyurea polymer polyol having improved storage stability wherein there is reacted a mixture of a hydroxyl-containing amine, a polyether polyol of about 3000 to 8000 molecular weight and an organic polyisocyanate wherein the amount of polyisocyanate reacted is less than the stoichiometric amount needed to satisfy the hydroxyl groups of the hydroxyl-containing amine and the polyether polyol the improvement which comprises adding to the reaction product an amount of secondary amine effective to improve the storage stability of said polyurea polymer polyol.
Claim 13
Dependent Claim
12 words
A method as in claim 10 wherein the hydroxyl-containing amine is monoethanolamine.
Claim 14
Dependent Claim
12 words
A method as in claim 10 wherein the hydroxyl-containing amine is diethanolamine.
Claim 15
Dependent Claim
12 words
A method as in claim 10 wherein the hydroxyl-containing amine is 2-(2-aminoethoxyethanol).
Claim 16
Dependent Claim
12 words
A method as in claim 10 wherein the hydroxyl-containing amine is hydroxyethylpiperazine.
Claim 17
Dependent Claim
12 words
A method as in claim 10 wherein the hydroxyl-containing amine is 1-amino-2-propanol.
Claim 18
Dependent Claim
25 words
A method as in claim 10 wherein the secondary amine added is has the formula ##STR3## where R is C 1 to C 8 alkyl.
Claim 19
Dependent Claim
85 words
A polyurea polymer polyol made by reacting a hydroxyl containing amine, a polyether polyol of about 3000 to 8000 molecular weight and an organic polyisocyanate wherein the amount of polyisocyanate reacted is less than the stoichiometric amount needed to satisfy the hydroxyl group of the hydroxyl-containing amine and the polyether polyol and adding to the reaction product an amount of a secondary amine of the formula ##STR4## where R is C 1 to C 8 alkyl effective to improve the storage stability of said polyol.
Claim 20
Dependent Claim
85 words
A polyurea polymer polyol made by reacting a hydroxyl containing amine, a polyether polyol of about 3000 to 8000 molecular weight and an organic polyisocyanate wherein the amount of polyisocyanate reacted is less than the stoichiometric amount needed to satisfy the hydroxyl group of the hydroxyl-containing amine and the polyether polyol and adding to the reaction product an amount of a secondary amine of the formula ##STR4## where R is C 1 to C 8 alkyl effective to improve the storage stability of said polyol.
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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |