Patent US3678000A successfully refreshed from Google Patents.
US3678000A
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US
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Polypropylene stabilized with metal salts of n - hydroxyalkylbenzyl alkylenepolyamines
Assignee: Chevron USA Inc
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Filing: 1970-09-25
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Granted: 1972-07-18
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Expires: 1990-09-25
Abstract
Abstract POLYPROPYLENE COMPOSITIONS STABILIZED AGAINST PHOTODEGRADATION BY DIVALENT METAL SALTS OF POLYAMINES HAVING THE FORMULA: (2-HO,5-R-PHENYL)-CH2-(N(-R'')-(CH(-R"))Z-CH(-R''"))Y- N(-H(2-X))-(CH2-(2-HO-1,5-PHENYLENE))X WHEREIN R IS AN ALKYL GROUP OF ABOUT 5 TO ABOUT 15 CARBON ATOMS; R'' IS H OR (2-HO,5-R-PHENYL)-CH2- R" AND R"'' WHICH MAY BE ALIKE OR DIFFERENT ARE H OR ALKYL GROUPS HAVING LESS THAN 5 CARBON ATOMS EACH; Z IS AN INTEGER IN THE RANGE OF 1 TO 12; Y IS AN INTEGER IN THE RANGE OF 1 TO 4; X IS 0, 1 OR 2 AND THE NUMBER OF MOLS OF DIVALENT METAL PER MOL OF SALT IS IN THE RANGE OF ABOUT 0.5 TO 3.5, INCLUSIVE.
Inventors
- 👤 John Howard Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:13
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/04; C07F15/045; C08; C08K; C08K5/00; C08K5/0091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |