US4489099A
Expired / Lapsed
US
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Vitamin E/DLTDP stabilizer system for chewing gum SBR
Assignee: Goodyear Tire and Rubber Co
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Filing: 1983-02-28
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Granted: 1984-12-18
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Expires: 2003-02-28
Abstract
Abstract Styrene butadiene rubber (SBR) is widely used as a chewing gum base in lieu of natural gums. It is necessary to protect chewing gum SBR with a food grade antioxidant stabilizer system. This invention discloses a chewing gum rubber composition (gum base) that utilizes as an antioxidant stabilizer system a combination of dilauryl thiodipropionate and at least one member selected from the group consisting of t-butyl-hydroquinone (TBHQ), and Vitamin E.
Inventors
- 👤 Frank G. Shaheen
- 👤 Jerry J. Dillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:42
CPC Classifications
A; A23; A23G; A23G4/00; A23G4/06; A23G4/12; A23G4/126; C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/15; C08K5/151; C08K5/1545; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
85 words
An improved chewing gum rubber composition comprising: (1) styrene-butadiene rubber and (2) as a Mooney viscosity stabilizing system a combination of (a) 0.08 to 0.60 phr of dilauryl thiodipropionate and (b) 0.05 to 0.4 phr of Vitamin E wherein said chewing gum rubber composition has an aged Mooney ML-4 viscosity which is essentially the same as the original Mooney ML-4 viscosity of said chewing gum rubber composition wherein the aged Mooney ML-4 viscosity and the original Mooney ML-4 viscosity are determined using ASTM procedure D-1646.
Claim 2
Dependent Claim
85 words
An improved chewing gum rubber composition comprising: (1) styrene-butadiene rubber and (2) as a Mooney viscosity stabilizing system a combination of (a) 0.08 to 0.60 phr of dilauryl thiodipropionate and (b) 0.05 to 0.4 phr of Vitamin E wherein said chewing gum rubber composition has an aged Mooney ML-4 viscosity which is essentially the same as the original Mooney ML-4 viscosity of said chewing gum rubber composition wherein the aged Mooney ML-4 viscosity and the original Mooney ML-4 viscosity are determined using ASTM procedure D-1646.
Claim 3
Dependent Claim
32 words
A composition as specified in claim 1 wherein said stabilizing system is a combination of from 0.25 to 0.45 phr of dilauryl thiodipropionate and from 0.1 to 0.3 phr of Vitamin E.
Claim 4
Dependent Claim
32 words
A composition as specified in claim 2 wherein said stabilizing system is a combination of from 0.32 to 0.36 phr of dilauryl thiodipropionate and from 0.18 to 0.25 phr of Vitamin E.
Claim 5
Dependent Claim
21 words
A composition as specified in claim 1 wherein the ratio of said dilauryl thiodipropionate to said Vitamin E is about 1.7.
Claim 6
Dependent Claim
18 words
A composition as specified in claim 1 wherein said dilauryl thiodipropionate is emulsified in a food grade emulsifier.
Claim 7
Dependent Claim
21 words
A composition as specified in claim 5 wherein said food grade emulsifier is a combination of oleic acid and potassium hydroxide.
Claim 8
Dependent Claim
87 words
A chewing gum which comprises: a SBR which is Mooney viscosity stabilized with 0.08 to 0.60 phr of dilauryl thiodipropionate and 0.05 to 0.4 phr of Vitamin E as a gum base wherein said gum base has an aged Mooney ML-4 viscosity which is essentially the same as the original Mooney ML-4 viscosity of said gum base wherein the aged Mooney ML-4 viscosity and the original Mooney ML-4 viscosity are determined using ASTM procedure D-1646, in addition to other chewing gum additives including sweeteners, softeners, and flavors.
Claim 9
Dependent Claim
87 words
A chewing gum which comprises: a SBR which is Mooney viscosity stabilized with 0.08 to 0.60 phr of dilauryl thiodipropionate and 0.05 to 0.4 phr of Vitamin E as a gum base wherein said gum base has an aged Mooney ML-4 viscosity which is essentially the same as the original Mooney ML-4 viscosity of said gum base wherein the aged Mooney ML-4 viscosity and the original Mooney ML-4 viscosity are determined using ASTM procedure D-1646, in addition to other chewing gum additives including sweeteners, softeners, and flavors.
Claim 10
Dependent Claim
34 words
A chewing gum as specified in claim 7 wherein said SBR is stabilized with a combination of from 0.25 to 0.45 phr of dilauryl thiodipropionate and from 0.1 to 0.3 phr of Vitamin E.
Claim 11
Dependent Claim
34 words
A chewing gum as specified in claim 8 wherein said SBR is stabilized with a combination of from 0.32 to 0.36 phr of dilauryl thiodipropionate and from 0.18 to 0.25 phr of Vitamin E.
Claim 12
Dependent Claim
84 words
An improved chewing gum rubber composition comprising: (1) styrene-butadiene rubber and (2) as a Mooney viscosity stabilizing system a combination of (a) 0.02 to 0.20 phr of dilauryl thiodipropionate and (b) 0.10 to 0.50 phr of t-butyl hydroquinone, wherein said chewing gum rubber composition has an aged Mooney ML-4 viscosity which is essentially the same as the original Mooney ML-4 viscosity of said chewing gum rubber composition wherein the aged Mooney ML-4 viscosity and original Mooney ML-4 viscosity are determined using ASTM procedure D-1646.
Claim 13
Dependent Claim
84 words
An improved chewing gum rubber composition comprising: (1) styrene-butadiene rubber and (2) as a Mooney viscosity stabilizing system a combination of (a) 0.02 to 0.20 phr of dilauryl thiodipropionate and (b) 0.10 to 0.50 phr of t-butyl hydroquinone, wherein said chewing gum rubber composition has an aged Mooney ML-4 viscosity which is essentially the same as the original Mooney ML-4 viscosity of said chewing gum rubber composition wherein the aged Mooney ML-4 viscosity and original Mooney ML-4 viscosity are determined using ASTM procedure D-1646.
Claim 14
Dependent Claim
32 words
A composition as specified in claim 10 wherein said stabilizer system is a combination of from 0.03 to 0.07 phr of dilauryl thiodipropionate and from 0.20 to 0.30 phr of t-butyl hydroquinone.
Claim 15
Dependent Claim
28 words
A composition as specified in claim 11 wherein said stabilizing system is a combination of about 0.05 phr of dilauryl thiodipropionate and about 0.25 phr of t-butyl hydroquinone.
Claim 16
Dependent Claim
18 words
A composition as specified in claim 11 wherein said dilauryl thiodipropionate is emulsified in a food grade emulsifier.
Claim 17
Dependent Claim
21 words
A composition as specified in claim 13 wherein said food grade emulsifier is a combination of oleic acid and potassium hydroxide.
Claim 18
Dependent Claim
21 words
A composition as specified in claim 10 wherein the ratio of said t-butyl hydroquinone to said dilauryl thiodipropionate is about 5:1.
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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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |