Patent US4284875A successfully refreshed from Google Patents.
Patent US4274884A successfully refreshed from Google Patents.
US4274884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing wallpaper
Assignee: SmithKline Beecham SWG Ltd
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Filing: 1979-05-02
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Granted: 1981-06-23
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Expires: 1999-05-02
Abstract
Abstract A composition containing organic compounds for plasticizing resins, an emulsifying agent, a thickening and suspending agent and possibly an inert filler and/or water, is applied to an emulsion-painted wallpaper surface and left for several hours to allow the compounds to act on the binder resins in the paint coating. The resulting cohesive, plasticized paint film may then be removed by scoring and removing strips of the film and adhering wallpaper, starting from the score mark, any remaining paint and underlying paper being removed by scraping after possible application of water.
Inventors
- 👤 Jeffery Cartwright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:25
CPC Classifications
B; B44; B44C; B44C7/00; C; C09; C09D; C09D9/00; Y; Y10; Y10S; Y10S156/00; Y10S156/918; Y10S156/929; Y10T; Y10T156/00; Y10T156/11; Y10T156/1168
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
167 words
A method for removing, from a supporting surface, wallpaper having a surface coating of emulsion paint containing a plastics binder resin, wherein said method includes the steps of: applying an emulsion-painted wallpaper remover to said surface coating, leaving said wallpaper remover to plasticize said binder resin to form a cohesive, pliable paint film and thereafter, scoring said paint film and underlying paper with a sharp instrument, raising the edge of said paint film and adhering paper adjacent the score mark and pulling the raised edge away from said supporting surface to remove a strip of said paint film and adhering paper progressively from said surface, said wallpaper remover consisting essentially of: at least one organic compound capable of plasticizing said plastics resin, each said at least one compound having a flash point above 35° C., a boiling point above 120° C. and an evaporation number greater than 30, based on the evaporation number of diethyl ether being 1; an emulsifying agent; and a thickening and suspending agent.
Claim 2
Independent Claim
167 words
A method for removing, from a supporting surface, wallpaper having a surface coating of emulsion paint containing a plastics binder resin, wherein said method includes the steps of: applying an emulsion-painted wallpaper remover to said surface coating, leaving said wallpaper remover to plasticize said binder resin to form a cohesive, pliable paint film and thereafter, scoring said paint film and underlying paper with a sharp instrument, raising the edge of said paint film and adhering paper adjacent the score mark and pulling the raised edge away from said supporting surface to remove a strip of said paint film and adhering paper progressively from said surface, said wallpaper remover consisting essentially of: at least one organic compound capable of plasticizing said plastics resin, each said at least one compound having a flash point above 35° C., a boiling point above 120° C. and an evaporation number greater than 30, based on the evaporation number of diethyl ether being 1; an emulsifying agent; and a thickening and suspending agent.
Claim 3
Independent Claim
220 words
A method for removing, from a supporting surface, wallpaper having a surface coating of emulsion paint containing a plastics binder resin, said method including the steps of: a. applying to said surface coating an emulsion wallpaper remover consisting essentially of: at least one organic compound capable of plasticizing said plastics resin, each said at least one compound having a flash point above 35° C., a boiling point above 120° C. and an evaporation number greater than 30, based on the evaporation number of diethyl ether being 1; an emulsifying agent; and a thickening and suspending agent, said at least one organic compound, said emulsifying agent and said thickening agent being combined in such quantities that said emulsion-painted wallpaper remover can be spread and left on said surface coating and will soften said coating to form a coherent, pliable paint film; b. leaving the thus applied wallpaper remover in contact with said surface coating to plasticize said surface coating to form a coherent, pliable paint film; and thereafter, c. scoring said paint film and underlying paper with a sharp instrument; and d. raising the edge of said paint film and adhering paper adjacent the score mark and pulling the raised edge away from said supporting surface to remove a strip of said paint film and adhering paper progressively from said surface.
Claim 4
Independent Claim
220 words
A method for removing, from a supporting surface, wallpaper having a surface coating of emulsion paint containing a plastics binder resin, said method including the steps of: a. applying to said surface coating an emulsion wallpaper remover consisting essentially of: at least one organic compound capable of plasticizing said plastics resin, each said at least one compound having a flash point above 35° C., a boiling point above 120° C. and an evaporation number greater than 30, based on the evaporation number of diethyl ether being 1; an emulsifying agent; and a thickening and suspending agent, said at least one organic compound, said emulsifying agent and said thickening agent being combined in such quantities that said emulsion-painted wallpaper remover can be spread and left on said surface coating and will soften said coating to form a coherent, pliable paint film; b. leaving the thus applied wallpaper remover in contact with said surface coating to plasticize said surface coating to form a coherent, pliable paint film; and thereafter, c. scoring said paint film and underlying paper with a sharp instrument; and d. raising the edge of said paint film and adhering paper adjacent the score mark and pulling the raised edge away from said supporting surface to remove a strip of said paint film and adhering paper progressively from said surface.
Claim 5
Independent Claim
235 words
A method for removing, from a supporting surface, wallpaper having a surface coating of emulsion paint containing a plastics binder resin, said method including the steps of: a. applying to said surface coating an emulsion painted wallpaper remover consisting essentially of: (1) from 35% to 90% by weight of at least one organic compound capable of plasticizing said plastics resin, each said at least one compound having a flash point above 35° C., a boiling point above 120° C. and an evaporation number greater than 30, based on the evaporation number of diethyl ether being 1; (2) from 1% to 40% of an emulsifying agent; (3) From 0.3% to 40% by weight of a thickening and suspending agent, provided that components (1), (2) and (3) are present in quantities such that said emulsion-coated wallpaper remover can be spread and left on said surface coating and will soften said coating to form a coherent, pliable paint film; B. leaving the thus applied wallpaper remover in contact with said surface coating to plasticize said surface coating to form a coherent, pliable paint film; C. scoring said paint film and underlying paper with a sharp instrument; and D. raising the edge of said paint film and adhereing paper adjacent to the score mark and pulling the raised edge away from said supporting surface to remove a strip of said paint film and adhering paper progressively from said surface.
Claim 6
Independent Claim
235 words
A method for removing, from a supporting surface, wallpaper having a surface coating of emulsion paint containing a plastics binder resin, said method including the steps of: a. applying to said surface coating an emulsion painted wallpaper remover consisting essentially of: (1) from 35% to 90% by weight of at least one organic compound capable of plasticizing said plastics resin, each said at least one compound having a flash point above 35° C., a boiling point above 120° C. and an evaporation number greater than 30, based on the evaporation number of diethyl ether being 1; (2) from 1% to 40% of an emulsifying agent; (3) From 0.3% to 40% by weight of a thickening and suspending agent, provided that components (1), (2) and (3) are present in quantities such that said emulsion-coated wallpaper remover can be spread and left on said surface coating and will soften said coating to form a coherent, pliable paint film; B. leaving the thus applied wallpaper remover in contact with said surface coating to plasticize said surface coating to form a coherent, pliable paint film; C. scoring said paint film and underlying paper with a sharp instrument; and D. raising the edge of said paint film and adhereing paper adjacent to the score mark and pulling the raised edge away from said supporting surface to remove a strip of said paint film and adhering paper progressively from said surface.
Claim 7
Dependent Claim
38 words
The method according to claim 2 wherein said at least one organic compound is a solvent for said plastics resin, said solvent being present in said emulsion-painted wallpaper remover in a quantity capable of plasticizing said plastics resin.
Claim 8
Dependent Claim
99 words
The method according to claim 2 or 3, wherein the at least one organic compound (1) is a solvent for said plastics resin and is selected from the group consisting of ethylene glycol monomethyl ether; ethylene glycol mono-ethyl ether; diethylene glycol monomethyl ether; diethylene glycol mono-n-butyl ether; diethylene glycol dimethyl ether; ethylene glycol mono-n-butyl ether; diethylene glycol mono ethyl ether; butoxy-ethoxy propanol; triethylene glycol monoethyl ether; ethylene glycol mono ethyl ether acetate; ethylene glycol monomethyl ether acetate; glycollic acid n-butyl ether; 3-methoxy-n-butyl acetate; diethylene glycol mono-n-butyl ether acetate; 2,2,4-trimethyl-3-hydroxpentyl isobutyrate; diacetone alcohol; tetrahydrofurfuryl alcohol; and triethylene glycol mono-n-butyl ether.
Claim 9
Dependent Claim
40 words
The method according to claim 3 or 2, wherein said at least one organic compound (1) is a plasticizer for the resin selected from the group consisting of dibutyl phthalate, tricresol phosphate, tributyl phosphate, triethylene glycol dicaprylate and di-tridecyl phthalate.
Claim 10
Dependent Claim
20 words
The method according to claim 2, wherein said emulsifying agent constitutes up to 40% by weight of said wallpaper remover.
Claim 11
Dependent Claim
40 words
The method according to claim 2 or 3, wherein said emulsifying agent (2) is selected from the group consisting of a substituted ehtylene oxide condensate, an alkyl phenol ethoxylate; a fatty alcohol sulphate and a fatty acid amide of diethanolamine.
Claim 12
Dependent Claim
23 words
The method according to claim 2, wherein said thickening and suspending agent constitutes up to 40% by weight of said emulsion-painted wallpaper remover.
Claim 13
Dependent Claim
36 words
The method according to claim 3, wherein said thickening and suspending agent is selected from the group consisting of an emulsifying wax, a cellulosic polymer, a surface treated clay and a high molecular weight polyethylene glycol.
Claim 14
Dependent Claim
13 words
A method according to claim 10, wherein said cellulosic polymer is hydroxypropyl cellulose.
Claim 15
Dependent Claim
20 words
The method according to claim 3, wherein said wallpaper remover further includes up to 50% by weight of inert filler.
Claim 16
Dependent Claim
30 words
The method according to claim 12, wherein said inert filler comprises at least one member selected from the group consisting of a finely ground state clay, chalk, talc and asbestine.
Claim 17
Dependent Claim
14 words
The method according to claim 3, wherein said wallpaper remover further includes a diluent.
Claim 18
Independent Claim
11 words
The method according to calim 14, wherein said diluent is water.
Claim 19
Independent Claim
11 words
The method according to calim 14, wherein said diluent is water.
Claim 20
Dependent Claim
22 words
The method according to claim 3, wherein said wallpaper remover further includes up to 10% by weight of at least one humectant.
Claim 21
Dependent Claim
26 words
The method according to claim 16, wherein said at least one humectant is selected from the group consisting of glycerine, propylene glycol and a polyethylene glycol.
Claim 22
Dependent Claim
14 words
The method according to claim 3, wherein said wallpaper remover further includes a reodorant.
Claim 23
Dependent Claim
13 words
The method according to claim 18, wherein said reodorant is a terpene oil.
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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) | 1984-06-22 | 1984-12-22 | 1985-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-22 | 1988-12-22 | 1989-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-22 | 1992-12-22 | 1993-06-23 | $7700.00 | Window Closed / Lapsed |