US4501616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant and mold-release agent for the manufacture of ties
Assignee: Evonik Operations GmbH
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Filing: 1980-06-23
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Granted: 1985-02-26
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Expires: 2000-06-23
Abstract
Abstract A lubricant and release agent for the manufacture of tires containing as the active ingredient liquid polyoxypropylenediols or polyoxypropylenepolyoxyethylenediols or ethers of the diols, which liquid has a viscosity of at least 8000 mPa×sec. The use of the release agent of the present invention avoids the occurrence of defects in the interior surface of the vulcanized tire and improves the life of the rubber bags used in the unvulcanized carcass shell of the tire.
Inventors
- 👤 Hans-Ferdi Fink
- 👤 Gotz Koerner
- 👤 Rolf Freiberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:19
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2201/10; C10M2201/102; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10N; C10N2020/00; C10N2020/01; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
A lubricant and release agent composition for use in the manufacture of tires consisting essentially of a lubricating and release effective amount of a water insoluble liquid selected from the group consisting of polyoxypropylenediols, and ethers of said diols, said liquid having a viscosity of at least about 8,000 mPa×sec., wherein the amount of liquid is from about 1 to 20 weight percent based on the weight of the composition.
Claim 2
Dependent Claim
70 words
A lubricant and release agent composition for use in the manufacture of tires consisting essentially of a lubricating and release effective amount of a water insoluble liquid selected from the group consisting of polyoxypropylenediols, and ethers of said diols, said liquid having a viscosity of at least about 8,000 mPa×sec., wherein the amount of liquid is from about 1 to 20 weight percent based on the weight of the composition.
Claim 3
Dependent Claim
59 words
A lubricant and release agent composition for use in the manufacture of tires consisting essentially of a lubricating and release effective amount of a water insoluble liquid selected from the group consisting of polyoxypropylenediols, polyoxypropylenepolyoxyethylenediols, and ethers of said diols, said liquid having a viscosity of at least about 8,000 mPa×sec, fillers having a laminar structure, and dispersing agents.
Claim 4
Dependent Claim
59 words
A lubricant and release agent composition for use in the manufacture of tires consisting essentially of a lubricating and release effective amount of a water insoluble liquid selected from the group consisting of polyoxypropylenediols, polyoxypropylenepolyoxyethylenediols, and ethers of said diols, said liquid having a viscosity of at least about 8,000 mPa×sec, fillers having a laminar structure, and dispersing agents.
Claim 5
Dependent Claim
27 words
The composition of claim 1 or 2 wherein the amount of liquid is from about 1 to 4 weight percent based on the weight of the composition.
Claim 6
Dependent Claim
13 words
The composition of claim 2 wherein the dispersing agent is a non-ionic emulsifier.
Claim 7
Dependent Claim
27 words
The composition of claim 4 wherein the amount of emulsifier is from about 5 to 15 weight percent based on the diol or ether to be dispersed.
Claim 8
Dependent Claim
22 words
The composition of claim 1 or 2 wherein the ethers of said diols are formed from a monofunctional or multifunctional starter alcohol.
Claim 9
Dependent Claim
32 words
The composition of claim 1 or 2 wherein the ethers of said diols are formed from a starter alcohol selected from the group consisting of propanediol, butanediol, hexanediol, glycerin, trimethylolpropane and butanol.
Claim 10
Dependent Claim
25 words
The compositions of claim 1 or 2 wherein the liquid has a molecular weight of more than about 6000 as determined by the hydroxyl number.
Claim 11
Dependent Claim
23 words
The composition of claim 1 or 2 wherein the liquid is a polyoxypropylenediol or ether thereof which does not contain any oxyethylene groups.
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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |