Patent US3853818A successfully refreshed from Google Patents.
US3853818A
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US
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Aminoborate esters as polyurethane catalysts
Assignee: Air Products and Chemicals Inc
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Filing: 1973-01-22
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Granted: 1974-12-10
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Expires: 1993-01-22
Abstract
Abstract This invention relates to the utility of nitrogen containing borate esters. In particular, it relates to a process for preparing polyurethanes employing nitrogen coordinated borate esters as the activators. These borate esters are found to be superior polyurethane catalysts when compared with the tertiary aminoalkanols from which they are derived.
Inventors
- 👤 I Bechara
- 👤 D Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:20
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/166; C08G18/168; C08G18/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
51 words
IN THE METHOD OF PREPARING POLYURETHANE COMPOSITIONS FROM FORMULATIONS COMPRISING A PRECURSOR OF AT LEAST ONE POLYOL HAVING A MINIMUM OF TWO ACTIVE HYDROGEN ATOMS PER MOLECULE, A REACTIVE ISOCYANATE, AND A CATALYST, THE IMPROVEMENT IN WHICH THE CATALYST COMPRISES AN EFFECTIVE ACTIVATING AMOUNT OF AN AMINOBORATE ORTHOESTER OF THE FORMULA
Claim 2
Dependent Claim
51 words
IN THE METHOD OF PREPARING POLYURETHANE COMPOSITIONS FROM FORMULATIONS COMPRISING A PRECURSOR OF AT LEAST ONE POLYOL HAVING A MINIMUM OF TWO ACTIVE HYDROGEN ATOMS PER MOLECULE, A REACTIVE ISOCYANATE, AND A CATALYST, THE IMPROVEMENT IN WHICH THE CATALYST COMPRISES AN EFFECTIVE ACTIVATING AMOUNT OF AN AMINOBORATE ORTHOESTER OF THE FORMULA
Claim 3
Dependent Claim
13 words
The method in accordance with claim 1 wherein said polyol is polyether polyol.
Claim 4
Dependent Claim
13 words
The method in accordance with claim 1 wherein said polyol is polyester polyol.
Claim 5
Dependent Claim
31 words
The method in accordance with claim 1 wherein said aminoborate orthoester is employed in an amount of from 0.05 to 1.5 parts by weight per hundred parts by weight of polyol.
Claim 6
Dependent Claim
31 words
The method in accordance with claim 2 wherein said aminoborate orthoester is employed in an amount of from 0.2 to 1.0 parts by weight per hundred parts by weight of polyol.
Claim 7
Dependent Claim
31 words
The method in accordance with claim 3 wherein said aminoborate orthoester is employed in an amount of from 0.2 to 1.0 parts by weight per hundred parts by weight of polyol.
Claim 8
Dependent Claim
32 words
The method in accordance with claim 1 wherein the catalyst is comprised of aminoborate ester and at least one organometallic compound selected from the group consisting of organometallic tin and organometallic lead.
Claim 9
Dependent Claim
31 words
The method in accordance with claim 7 wherein said aminoborate orthoester is employed in an amount of from 0.05 to 1.5 parts by weight per hundred parts by weight of 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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |