US3719615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhydroxy condensates of isocyanuric acid
Assignee: Atlantic Richfield Co
•
Filing: 1971-03-15
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Granted: 1973-03-06
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Expires: 1991-03-15
Abstract
Abstract This invention is addressed to novel polyhydroxyl compounds prepared by reaction of isocyanuric acid, formaldehyde, and an alkanol amine and their polyalkylene oxides derivatives, and to polyurethanes prepared from these polyhydroxyl compounds and organic isocyanates.
Inventors
- 👤 D Durand
- 👤 M Buisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:07
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/54; C08G18/544; C08G18/30; C08G18/38; C08G18/3819; C08G18/3842; C08G18/3851; C08G18/3853; C08G18/48; C08G18/50; C08G18/5021; C08G18/5054; C08G18/5063; C08G18/546
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
50 words
A polyurethane prepared by reaction of a polyhydroxyl compound having a hydroxyl number within the range of 300 to 700 and a nitrogen content of 9 to 24 percent by weight and prepared by reaction of isocyanuric acid, formaldehyde and a primary or secondary alkanol amine, and an organic isocyanate.
Claim 2
Dependent Claim
50 words
A polyurethane prepared by reaction of a polyhydroxyl compound having a hydroxyl number within the range of 300 to 700 and a nitrogen content of 9 to 24 percent by weight and prepared by reaction of isocyanuric acid, formaldehyde and a primary or secondary alkanol amine, and an organic isocyanate.
Claim 3
Dependent Claim
25 words
A polyurethane as defined in claim 1 wherein the reaction is carried out in the presence of a blowing agent to produce a polyurethane foam.
Claim 4
Dependent Claim
25 words
A polyurethane as defined in claim 1 wherein the organic isocyanate is selected from the group consisting of polymethylene polyphenyl diisocyanate and diphenyl methane diisocyanate.
Claim 5
Dependent Claim
26 words
A polyurethane as defined in claim 1 wherein the polyhydroxyl compound is reacted with the organic isocyanate in the presence of at least one other polyol.
Claim 6
Dependent Claim
27 words
A polyurethane as defined in claim 4 wherein the other polyol is selected from the group consisting of polyesters and polyethers containing at least three hydroxyl groups.
Claim 7
Dependent Claim
31 words
A polyurethane as defined in claim 4 wherein the other polyol is a polyether polyol prepared by condensation of propylene oxide with the product of reaction of ethylene glycol and glucose.
Claim 8
Dependent Claim
59 words
A polyurethane prepared by reaction of a polyhydroxylated compound having a hydroxyl number within the range of 300 to 700 and a nitrogen content of 9 to 24 percent by weight and prepared by first reacting isocyanuric acid, formaldehyde and a primary or secondary amine and then reacting the resulting product with an alkylene oxide, and an organic isocyanate.
Claim 9
Dependent Claim
59 words
A polyurethane prepared by reaction of a polyhydroxylated compound having a hydroxyl number within the range of 300 to 700 and a nitrogen content of 9 to 24 percent by weight and prepared by first reacting isocyanuric acid, formaldehyde and a primary or secondary amine and then reacting the resulting product with an alkylene oxide, and an organic isocyanate.
Claim 10
Dependent Claim
25 words
A polyurethane as defined in claim 7 wherein the reaction is carried out in the presence of a blowing agent to produce a polyurethane foam.
Claim 11
Dependent Claim
25 words
A polyurethane as defined in claim 7 wherein the organic isocyanate is selected from the group consisting of polymethylene polyphenyl diisocyanate and diphenyl methane diisocyanate.
Claim 12
Dependent Claim
26 words
A polyurethane as defined in claim 7 wherein the polyhydroxyl compound is reacted with the organic isocyanate in the presence of at least one other polyol.
Claim 13
Dependent Claim
27 words
A polyurethane as defined in claim 10 wherein the other polyol is selected from the group consisting of polyesters and polyethers containing at least three hydroxyl groups.
Claim 14
Dependent Claim
31 words
A polyurethane as defined in claim 10 wherein the other polyol is a polyether polyol prepared by condensation of propylene oxide with the product of reaction of ethylene glycol and glucose.
Claim 15
Dependent Claim
74 words
A polyurethane prepared by reaction of a polyhydroxyl compound having a hydroxyl number with the range of 300 to 700 and a nitrogen content of 9 to 24 percent by weight and prepared by reaction of isocyanuric acid, formaldehyde and a primary or secondary alkanol amine in a mole ratio of at least 3 moles of alkanol amine and at least 1.5 moles of formaldehyde per mole of isocyanuric acid and an organic isocyanate.
Claim 16
Dependent Claim
74 words
A polyurethane prepared by reaction of a polyhydroxyl compound having a hydroxyl number with the range of 300 to 700 and a nitrogen content of 9 to 24 percent by weight and prepared by reaction of isocyanuric acid, formaldehyde and a primary or secondary alkanol amine in a mole ratio of at least 3 moles of alkanol amine and at least 1.5 moles of formaldehyde per mole of isocyanuric acid and an organic isocyanate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |