US4228247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyoxyalkylene polyether polyol
Assignee: BASF Corp
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Filing: 1979-08-29
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Granted: 1980-10-14
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Expires: 1999-08-29
Abstract
Abstract Synergistic stabilizer combinations consisting of phenols such as 2,6,-di-t-butyl-4-methylphenol, amines such as 4,4'-bis(alpha,alpha- dimethylbenzyl)diphenylamine and p,p'-di-octyldiphenylamine, and phosphites such as phenyldidecylphosphite with 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester of 1,3,5-tris(2-hydroxyethyl)-s-triazine-2,4,6-(1H,3H,5H-trione are employed as oxidative stabilizers for polyoxyalkylene polyether polyols and for the prevention of scorch in polyurethane foams prepared therefrom.
Inventors
- 👤 Richard A. Moore
- 👤 Robert J. Hartman
- 👤 William W. Levis, Jr.
- 👤 Ralph E. Bloom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/005; C08K5/04; C08K5/13; C08K5/16; C08K5/17; C08K5/18; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34924; C08K5/49; C08K5/51; C08K5/52
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
54 words
A polyoxyalkylene polyether polyol containing an effective amount of a stabilizer composition containing a. from about 20 to about 95 weight percent of a stabilizer selected from the group consisting of 2,6-di-t-butyl-4-methylphenol, 4,4'-bis(alpha,alpha-dimethylbenzyl)diphenylamine, p,p'-dioctyldiphenylamine, phenyldidecylphosphite, and mixtures therefrom, and b. from about 5 to about 80 weight percent of 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester of 1,3,5-tris(2-hydroxyethyl)-s-triazine-2,4,6(1H,3H,5H)-trione.
Claim 2
Dependent Claim
54 words
A polyoxyalkylene polyether polyol containing an effective amount of a stabilizer composition containing a. from about 20 to about 95 weight percent of a stabilizer selected from the group consisting of 2,6-di-t-butyl-4-methylphenol, 4,4'-bis(alpha,alpha-dimethylbenzyl)diphenylamine, p,p'-dioctyldiphenylamine, phenyldidecylphosphite, and mixtures therefrom, and b. from about 5 to about 80 weight percent of 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester of 1,3,5-tris(2-hydroxyethyl)-s-triazine-2,4,6(1H,3H,5H)-trione.
Claim 3
Dependent Claim
18 words
The polyol of claim 1 wherein the ratio of 2,6-di-t-butyl-4-methylphenol to 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester of 1,3,5-tris(2-hydroxyethyl)-s-triazine-2,4,6(1H,3H,5H)-trione is 2:1.
Claim 4
Dependent Claim
25 words
The polyol of claim 1 wherein the concentration of said stabilizer composition is from 0.10 part to 1.0 part per 100 parts of said polyol.
Claim 5
Dependent Claim
21 words
The polyol of claim 1 wherein the concentration of said stabilizer composition is 0.5 part per 100 parts of said polyol.
Claim 6
Dependent Claim
78 words
A polyurethane foam prepared by the reaction of an organic polyisocyanate with a polyoxyalkylene polyether polyol in the presence of a blowing agent, said polyol stabilized against oxidation with an effective amount of a stabilizer composition containing a. from about 20 to about 95 weight percent of a stabilizer selected from the group consisting of 2,6-di-b-butyl-4-methylphenol, 4,4'-bis-t-(alpha,alpha-dimethylbenzene)diphenylamine, p,p'-dioctyldiphenylamine, phenyldidecylphosphite, and mixtures thereof, and b. from about 5 to about 80 weight percent of 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester of 1,3,5-tris(hydroxyethyl)-s-triazine-2,4,6(1H,3H,5H)-trione.
Claim 7
Dependent Claim
78 words
A polyurethane foam prepared by the reaction of an organic polyisocyanate with a polyoxyalkylene polyether polyol in the presence of a blowing agent, said polyol stabilized against oxidation with an effective amount of a stabilizer composition containing a. from about 20 to about 95 weight percent of a stabilizer selected from the group consisting of 2,6-di-b-butyl-4-methylphenol, 4,4'-bis-t-(alpha,alpha-dimethylbenzene)diphenylamine, p,p'-dioctyldiphenylamine, phenyldidecylphosphite, and mixtures thereof, and b. from about 5 to about 80 weight percent of 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester of 1,3,5-tris(hydroxyethyl)-s-triazine-2,4,6(1H,3H,5H)-trione.
Claim 8
Dependent Claim
18 words
The foam of claim 5 wherein the ratio of 2,6-di-t-butyl-4-methylphenol to 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester of 1,3,5-tris(2-hydroxyethyl)-s-triazine-2,4,6(1H,3H,5H)-trione is 2:1.
Claim 9
Dependent Claim
28 words
The foam of claim 5 wherein the concentration of said stabilizer composition in the polyol is from 0.10 part to 1.0 part per 100 parts of said polyol.
Claim 10
Dependent Claim
24 words
The foam of claim 5 wherein the concentration of said stabilizer composition in the polyol is 0.5 part per 100 parts of said polyol.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |