Patent US4164427A successfully refreshed from Google Patents.
US4164427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized hydrocarbon tackifying compositions
Assignee: Eastman Chemical Co
•
Filing: 1977-08-05
•
Granted: 1979-08-14
•
Expires: 1997-08-05
Abstract
Abstract Hydrocarbon tackifying compositions having improved resistance to oxidative degradation are provided by incorporating into the hydrocarbon tackifying composition a stabilizing amount of the combination of 2,2'-methylenebis-(4-methyl-6-tertiarybutylphenol) and dialkylthio ester antioxidants.
Inventors
- 👤 Darryl A. Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C08K5/04; C08K5/13; C09; C09J; C09J157/00; C08L; C08L2666/00; C08L2666/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
31 words
Tackifying resin having improved oxidative stability consisting essentially of a tackifying resin and about 0.1 to about 5 weight percent of the stabilizing combination comprising 2,2'-methylenebis-(4-methyl-6-tertiarybutylphenol) and at least one dialkylthiodipropionate.
Claim 2
Dependent Claim
31 words
Tackifying resin having improved oxidative stability consisting essentially of a tackifying resin and about 0.1 to about 5 weight percent of the stabilizing combination comprising 2,2'-methylenebis-(4-methyl-6-tertiarybutylphenol) and at least one dialkylthiodipropionate.
Claim 3
Dependent Claim
15 words
Tackifying resin composition according to claim 1 wherein said tackifying resin is hydrocarbon tackifying resin.
Claim 4
Dependent Claim
15 words
Tackifying resin composition according to claim 1 wherein said tackifying resin is polyterpene tackifying resin.
Claim 5
Dependent Claim
16 words
Tackifying resin composition according to claim 1 wherein said tackifying resin is rosin ester tackifying resin.
Claim 6
Dependent Claim
17 words
Tackifying resin composition according to claim 2 wherein said hydrocarbon tackifying resin is DAC-B hydrocarbon tackifying resin.
Claim 7
Dependent Claim
24 words
Hydrocarbon tackifying resin composition according to claim 5 wherein the ratio of 2,2'-methylenebis-(4-methyl-6-tertiarybutylphenol) to dialkylthiodipropionate is from 0.15 to 1.5 to 1.5 to 0.15.
Claim 8
Dependent Claim
13 words
Hydrocarbon tackifying resin composition according to claim 6 wherein said dialkylthiodipropionate is dimyristylthiodipropionate.
Claim 9
Dependent Claim
19 words
Hydrocarbon tackifying resin composition according to claim 7 wherein the ratio of 2,2'-methylenebis-(4-methyl-6-tertiarbutylphenol) to dimyristylthiodipropionate is 1 to 1.
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) | 1982-08-13 | 1983-02-12 | 1983-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-13 | 1987-02-12 | 1987-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-13 | 1991-02-12 | 1991-08-14 | $7700.00 | Window Closed / Lapsed |