Patent US3901849A successfully refreshed from Google Patents.
US3901849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyolefin compositions
Assignee: Eastman Kodak Co
•
Filing: 1974-05-09
•
Granted: 1975-08-26
•
Expires: 1994-05-09
Abstract
Abstract Polyolefin compositions having improved resistance to oxidative degradation are provided by incorporating into the polyolefin composition a stabilizing amount of the combination of tetrakis(methylene(3,5-di-t-butyl-4-hydroxyhydrocinnamate)) methane and polymerized 1,2-dihydroxy-2,2,4-trimethylquinoline.
Inventors
- 👤 Daniel P Dodson
- 👤 James E Baird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/134; C08K5/1345; C08K5/09; C08K5/10; C08K5/16; C08K5/22; C08K5/24; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/10; C08L23/14; C08L23/142; C08L65/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
41 words
POLYOLEFIN COMPOSITIONS HAVING IMPROVED RESISTANCE TO DEGRADATION WHICH CONTAIN ABOUT 0.6 TO ABOUT 5 WEIGHT PERCENT OF ASTABILIZING COMBINATION COMPRISING TETRAKIS(METHYLENE(3,5-DI-T-BUTYL-4-HYDROXYHYDROCINNAMATE))METHANE AND POLYMERIZED 1,2-DIHYDROXY-2,2,4-TRIMETHYLQUINOLINE WHEREIN THE RATIO OF TETRAKIS (METHYLENE (3,5-DI-T-BUTYL-4 HYDROXYHYDROCINNAMATE)) -METHANE TO POLYMERIZED 1,2-DIHYDROXY-2,2,4-TRIMETHYLQUINOLINE IS FROM 1.0:1.2 TO 1.0:.5.
Claim 2
Dependent Claim
41 words
POLYOLEFIN COMPOSITIONS HAVING IMPROVED RESISTANCE TO DEGRADATION WHICH CONTAIN ABOUT 0.6 TO ABOUT 5 WEIGHT PERCENT OF ASTABILIZING COMBINATION COMPRISING TETRAKIS(METHYLENE(3,5-DI-T-BUTYL-4-HYDROXYHYDROCINNAMATE))METHANE AND POLYMERIZED 1,2-DIHYDROXY-2,2,4-TRIMETHYLQUINOLINE WHEREIN THE RATIO OF TETRAKIS (METHYLENE (3,5-DI-T-BUTYL-4 HYDROXYHYDROCINNAMATE)) -METHANE TO POLYMERIZED 1,2-DIHYDROXY-2,2,4-TRIMETHYLQUINOLINE IS FROM 1.0:1.2 TO 1.0:.5.
Claim 3
Dependent Claim
20 words
Polyolefin compositions according to claim 1 wherein the ratio of tetrakis(methylene(3,5-di-t-butyl-4-hydroxyhydRocinnamate))methane to polymerized 1,2-dihydroxy-2,2, 4-trimethylquinoline is from 1.0:1.5 to 1.0:1.23.
Claim 4
Dependent Claim
28 words
Polyolefin compositions according to claim 2 wherein said stabilizing combination is present in the polyolefin composition in an amount of from about 0.6 to about 5 weight percent.
Claim 5
Dependent Claim
11 words
Polyolefin compositions according to claim 3 wherein said polyolefin is polyethylene.
Claim 6
Dependent Claim
11 words
Polyolefin compositions according to claim 3 wherein said polyolefin is polypropylene.
Claim 7
Dependent Claim
21 words
Polyolefin compositions according to claim 3 wherein said polyolefin is ethylene/propylene block copolymer containing less than 10 percent by weight ethylene.
Claim 8
Dependent Claim
28 words
Polyolefin compositions according to claim 3 wherein said stabilizing combination is present in the polyolefin composition in an amount of from about 0.6 to about 3 weight percent.
Claim 9
Dependent Claim
11 words
Polyolefin compositions according to claim 7 wherein said polyolefin is polyethylene.
Claim 10
Dependent Claim
11 words
Polyolefin compositions according to claim 7 wherein said polyolefin is polypropylene.
Claim 11
Dependent Claim
21 words
Polyolefin compositions according to claim 7 wherein said polyolefin is ethylene/propylene block copolymer containing less than 10 percent by weight ethylene.
Claim 12
Dependent Claim
27 words
A stabilizing combination comprising tetrakis(methylene(3,5-di-t-butyl-4-hydroxyhydrocinnamate))methane and polymerized 1,2-dihydroxy-2,2,4-trimethylquinoline wherein the ratio of tetrakis (methylene (3,5-di-t-butyl-4 hydroxyhydrocinnamate)) -methane to polymerized 1,2-dihydroxy-2,2,4-trimethylquinoline is from 1.0: 1.2 to 1.0: 2.5.
Claim 13
Dependent Claim
27 words
A stabilizing combination comprising tetrakis(methylene(3,5-di-t-butyl-4-hydroxyhydrocinnamate))methane and polymerized 1,2-dihydroxy-2,2,4-trimethylquinoline wherein the ratio of tetrakis (methylene (3,5-di-t-butyl-4 hydroxyhydrocinnamate)) -methane to polymerized 1,2-dihydroxy-2,2,4-trimethylquinoline is from 1.0: 1.2 to 1.0: 2.5.
Claim 14
Dependent Claim
21 words
A stabilizing combination according to claim 11 wherein the ratio of tetrakis(methylene(3,5-di-t-butyl-4-hydroxyhydrocinnamate)-methane to polymerized 1,2-dihydroxy-2,2, 4-trimethylquinoline is from 1.0:1.5 to 1.0:1.23.
References Cited (Backward Citations)
US3039989A
Cited
US3296189A
Cited
US3440210A
Cited
US3573251A
Cited
US3627727A
Cited
US3806358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |