US4110119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Release agents
Assignee: Bayer AG
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Filing: 1976-11-16
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Granted: 1978-08-29
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Expires: 1996-11-16
Abstract
Abstract N-acyl taurides can be used as release agents for reducing the adhesion of mouldings of a rubber or plastics material to the surface of a mould and for preventing sheet-form compounds from sticking together.
Inventors
- 👤 Gunther Boehmke
- 👤 Hermann Fries
- 👤 Erich Esch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:37
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; B29K; B29K2021/00; C; C10; C10M; C10M2219/00; C10M2219/04; C10M2219/042
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
98 words
A process for reducing the adhesion of molded articles of rubber compounds and plastics to the mold surfaces and for preventing sheet-form mixtures from sticking together which comprises applying to a mold surface a release agent consisting essentially of a compound having the formula R--co--NH--CH.sub.2 --CH.sub.2 --SO.sub.3 M wherein R is alkyl or alkenyl of 7 to 21 carbon atoms and having up to two hydroxyl groups, and M is a member selected from the group consisting of alkali metal cation, alklaline earth metal cation, ammonium, mono-alkanolammonium, di-alkanolammonium, and tri-alkanolammonium, each said alkanol moiety being ethanol or propanol.
Claim 2
Dependent Claim
98 words
A process for reducing the adhesion of molded articles of rubber compounds and plastics to the mold surfaces and for preventing sheet-form mixtures from sticking together which comprises applying to a mold surface a release agent consisting essentially of a compound having the formula R--co--NH--CH.sub.2 --CH.sub.2 --SO.sub.3 M wherein R is alkyl or alkenyl of 7 to 21 carbon atoms and having up to two hydroxyl groups, and M is a member selected from the group consisting of alkali metal cation, alklaline earth metal cation, ammonium, mono-alkanolammonium, di-alkanolammonium, and tri-alkanolammonium, each said alkanol moiety being ethanol or propanol.
Claim 3
Dependent Claim
9 words
The process of claim 1 wherein M is sodium.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein M is sodium and R is a stearyl group.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein the release agent is free from water-soluble salts of inorganic acids.
Claim 6
Dependent Claim
15 words
The process of claim 1 wherein the release agent is dispersed in an organic solvent.
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein the release agent is dispersed in water.
Claim 8
Dependent Claim
17 words
The process of claim 1 wherein the release agent is applied to a mold surface by spraying.
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) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |