US5061518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic protective coatings
Assignee: Roehm GmbH Darmstadt
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Filing: 1989-11-16
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Granted: 1991-10-29
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Expires: 2009-11-16
Abstract
Abstract Methods for providing temporary protective coatings on mechanic objects by applying thereto an aqueous emulsion of a lipophilic poly(meth)acrylate polymer predominately including esters of alcohols having at least four carbon atoms and then removing said temporary coatings when desired with an organic solvent which, with the polymer dissolved therein, is conveniently disposed of by combustion.
Inventors
- 👤 Klaus Langerbeins
- 👤 Hans Trabitzsch
- 👤 Helmut Daum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:34
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D5/00; C09D5/008
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
99 words
A method for providing temporary protection to the surface of a mechanical object with a coating of an acrylic polymer, which method comprises applying to said object an aqueous dispersion of a lipophilic poly(meth)acrylate polymer and removing water therefrom, whereby a film of said polymer is formed on said object, and, when said protective coating is no longer wanted or needed, removing said film from said object with a combustible organic solvent, and, after removal of said film from said object, completely combusting said organic solvent and the removed polymer dissolved therein to CO 2 and H 2 O.
Claim 2
Independent Claim
99 words
A method for providing temporary protection to the surface of a mechanical object with a coating of an acrylic polymer, which method comprises applying to said object an aqueous dispersion of a lipophilic poly(meth)acrylate polymer and removing water therefrom, whereby a film of said polymer is formed on said object, and, when said protective coating is no longer wanted or needed, removing said film from said object with a combustible organic solvent, and, after removal of said film from said object, completely combusting said organic solvent and the removed polymer dissolved therein to CO 2 and H 2 O.
Claim 3
Independent Claim
76 words
A method for providing temporary protection to the surface of a mechanical object with a coating of an acrylic polymer, which method comprises applying to said object an aqueous dispersion of a lipophilic poly(meth)acrylate polymer and removing water therefrom, whereby a film of said polymer is formed on said object, and, when said protective coating is no longer wanted or needed, removing said film from said object with an aqueous emulsion or a combustible organic solvent.
Claim 4
Independent Claim
76 words
A method for providing temporary protection to the surface of a mechanical object with a coating of an acrylic polymer, which method comprises applying to said object an aqueous dispersion of a lipophilic poly(meth)acrylate polymer and removing water therefrom, whereby a film of said polymer is formed on said object, and, when said protective coating is no longer wanted or needed, removing said film from said object with an aqueous emulsion or a combustible organic solvent.
Claim 5
Dependent Claim
54 words
A method as in claim 2 wherein, after removal of said film from said object, said aqueous emulsion or organic solvent is separated into an aqueous phase and an organic phase having removed polymer dissolved therein, and said organic phase and dissolved polymer are then completely combusted to CO 2 and H 2 O.
References Cited (Backward Citations)
US3544349A
Cited
US4200671A
Cited
EP0015694A2
Cited
US4476269A
Cited
EP0082931B1
Cited
EP0124849A2
Cited
US4612058A
Cited
US4917926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-28 | 1995-04-29 | 1995-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-28 | 1999-04-29 | 1999-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-28 | 2003-04-29 | 2003-10-29 | $7700.00 | Window Closed / Lapsed |