Patent EP0591091A1 successfully refreshed from Google Patents.
EP0591091A1
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EP
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A method of producing an article with a coating having friction-reducing properties and coating composition
Assignee: Unomedical AS
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Filing: 1993-09-09
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Granted: —
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Expires: 2013-09-09
Abstract
Abstract A method of producing an article with a coating having friction-reducing properties in wet condition, said coating comprising a binder (a), a hydrophilic polymer (b), as well as, if desired, an osmolality-increasing compound (c), whereby a dispersion is produced from (a) a binder in form of a hardenable prepolymer of a molecular weight of at least 200, (b) one or more hydrophilic polymers, (c) if desired, an osmolality-increasing compound, and (d) a solvent or a mixture of solvents, in which (a) is substantially insoluble, applying said dispersion onto the article, removing the solvent or a portion thereof, and hardening the binder, as well as a coating material for this purpose. A durable coating is obtained having good slide properties even after a long stay in an aqueous environment, such as within a body cavity.
Inventors
- 👤 Charles Medom Hansen
- 👤 Lisbeth Juhl Just
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 03:19
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/08; A61L29/085; C; C09; C09D; C09D5/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
119 words
A method of producing an article with a coating having friction-reducing properties in wet condition, said coating comprising a binder (a), a hydrophilic polymer (b), as well as, if desired, an osmolality-increasing compound (c), characterised by producing a dispersion from (a) a binder in form of a hardenable prepolymer of a molecular weight of at least 200, (b) one or more hydrophilic polymers, (c) if desired, an osmolality-increasing compound, and (d) a solvent or a mixture of solvents, in which (a) is substantially insoluble, using 0.2 to 60 parts by weight of hydrophilic polymer (b) per part by weight of binder (a), applying said dispersion onto the article, removing the solvent or a portion thereof, and hardening the binder.
Claim 2
Dependent Claim
109 words
A coating material comprising a binder (a), a hydrophilic polymer (b), as well as, if desired, an osmolality-increasing compound (c), characterised in that it is provided in form of a dispersion having a disperse phase dispersed in a dispersant, said dispersion being produced from (a) a binder in form of a hardenable prepolymer of a molecular weight of at least 200, (b) one or more hydrophilic polymers, (c) if desired, an osmolality-increasing compound, and (d) a solvent or a mixture of solvents, in which (a) is substantially insoluble, and that it contains 0.2 to 60 parts by weight of hydrophilic polymer (b) per part by weight of binder (a).
Claim 3
Dependent Claim
45 words
A coating material as claimed in claim 2, characterised by the hydrophilic polymer component (b) being composed of (b1) one or more hydrophilic polymers being only slightly soluble in the dispersant, and (b2) one or more hydrophilic polymers being substantially completely soluble in the dispersant.
Claim 4
Dependent Claim
65 words
A coating material as claimed in claim 3, characterised by comprising 3.5 to 15 parts by weight of hardenable prepolymer (a), 60 to 240 parts by weight of the first hydrophilic polymer (b1), 50 to 200 parts by weight of the second hydrophilic polymer (b2), 22 to 90 parts by weight of osmolality-increasing compound (c), and 140 to 560 parts by weight of solvent (d).
Claim 5
Dependent Claim
34 words
A coating material as claimed in claim 3, characterised by the hydrophilic polymer (bl) being polyethylene glycol (PEG), by the hydrophilic polymer (b2) being polyvinyl pyrrolidone (PVP), and by the solvent (d) being water.
Claim 6
Dependent Claim
20 words
A coating material as claimed in claim 2, characterised by the hardenable binder (a) being one or more radical-polymerisable binders.
Claim 7
Dependent Claim
18 words
A coating material as claimed in claim 6, characterised by the hardenable binder (a) being a radiation-curable binder.
Claim 8
Dependent Claim
29 words
A coating material as claimed in claim 6, characterised by the binder (a) being a UV-curable or laser beam-curable binder, and by the coating material further containing a photoinitiator.
Claim 9
Dependent Claim
41 words
A coating material as claimed in claim 8, characterised by the photoinitiator being conventional per se with a capacity for forming free radicals, said photoinitiator being of such a structure that each of the resulting free radicals contains an ethylenically unsaturation.
Claim 10
Dependent Claim
20 words
An article with a coating having friction-reducing properties in wet condition obtainable by the method as claimed in claim 1.
References Cited (Backward Citations)
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