US5219955A
Expired / Lapsed
US
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Composition of matter for encapsulation of S-triazines using poly(1-hydroxyl-(2,6-phenylene methylenes)) for thermal stability enhancement and dissolution in diesel fuel
Assignee: Texaco Inc
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Filing: 1992-03-09
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Granted: 1993-06-15
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Expires: 2012-03-09
Abstract
Abstract A composition of matter comprising a mixture of: a) 1-(poly[1-hydroxyl-(2,6-phenylene methylene)])-3,5-dihydroxy-s-triazine; b) cyclo-1,3-(poly[1-hydroxyl-2,6-phenylenemethylene)])-5-hydroxy-s-triazine; c) [1-(phenoxy)-3-(phenoxy')-5-hydroxy-s-triazine-]poly[1-hydroxyl-(2,6-phenylene methylene)]; d) a ladder polymer containing randomly interdispersed s-triazine 'steps'; and e) a star polymer containing randomly interdispersed s- triazine connector sites for poly[1-hydroxyl-(2,6-phenylene methylene)] groups but where one or more pendant hydroxyl-s-triazine functions are also present.
Inventors
- 👤 Rodney L. Sung
- 👤 Thomas F. DeRosa
- 👤 Benjamin J. Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:08
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G8/04; C08G8/08; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
51 words
A composition of matter comprising a mixture of: a) 1-(poly[1-hydroxyl-(2,6-phenylene methylene)])-3,5-dihydroxy-s-triazine; b) cyclo-1,3-(poly[1-hydroxyl-2,6-phenylenemethylene)])-5-hydroxy-s-triazine; c) {1-(phenoxy)-3-(phenoxy')-5-hydroxy-s-triazine-}poly[1-hydroxyl-(2,6-phenylene methylene)]; d) a ladder polymer containing randomly interdispersed s-triazine `steps`; and e) a star polymer containing randomly interdispersed s-triazine connector sites for poly[1-hydroxyl-(2,6-phenylene methylene)] groups but where one or more pendant hydroxyl-s-triazine functions are also present.
Claim 2
Dependent Claim
51 words
A composition of matter comprising a mixture of: a) 1-(poly[1-hydroxyl-(2,6-phenylene methylene)])-3,5-dihydroxy-s-triazine; b) cyclo-1,3-(poly[1-hydroxyl-2,6-phenylenemethylene)])-5-hydroxy-s-triazine; c) {1-(phenoxy)-3-(phenoxy')-5-hydroxy-s-triazine-}poly[1-hydroxyl-(2,6-phenylene methylene)]; d) a ladder polymer containing randomly interdispersed s-triazine `steps`; and e) a star polymer containing randomly interdispersed s-triazine connector sites for poly[1-hydroxyl-(2,6-phenylene methylene)] groups but where one or more pendant hydroxyl-s-triazine functions are also present.
Claim 3
Dependent Claim
83 words
The composition of matter of claim 1, wherein the components are represented, respectively, by the formulas ##STR8## wherein the integer n varies from 3-3000; R 1 , R 2 , and R 3 are each H or a (C 1 -C 50 ) linear or branched alkyl, aromatic, polyaromatic, alkylaromatic, alkylpolyaromatic, unsaturated or saturated hydrocarbon group; R 4 and R 5 are each a (C 1 --C 10 ) hydrocarbon group as defined for R 1 , R 2 and R 3 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |