US5741551A
Expired / Lapsed
US
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Preparation of polymeric surfaces
Assignee: Surmodics Coatings LLC
•
Filing: 1996-04-23
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Granted: 1998-04-21
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Expires: 2016-04-23
Abstract
Abstract Surfaces are provided with desired characteristics of a polymer by covalently bonding polymer molecules to the surface through external activation of latent reactive groups carried by the polymer molecules. The initial surfaces are free of chemical groups added by surface pretreatement and which chemically participate in the covalent bonding process.
Inventors
- 👤 Patrick E. Guire
- 👤 Shawn G. Dunkirk
- 👤 Mark W. Josephson
- 👤 Melvin J. Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:28
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; A; A61; A61F; A61F2/00; A61F2/0077; A61K; A61K47/00; A61K47/50; A61K47/51; A61K47/68; A61L; A61L27/00; A61L27/28; A61L27/34; A61L33/00; A61L33/0005; A61L33/0011; A61L33/0029; C; C12; C12N; C12N11/00; C12N11/02; C12N11/06; C12N5/00; C12N5/0068; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/531; G01N33/543; G02B; G02B1/00; G02B1/04; G02B1/041; G02B1/043; A61L2400/00; A61L2400/18; C12N2533/00; C12N2533/30; C12N2533/50; C12N2533/54; C12N2533/70; C12N2533/78; C12N2533/80
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
A method of providing a polymer to a substrate having a solid surface, the method comprising the steps of sequentially: (a) contacting the substrate surface with a composition comprising a plurality of molecules of a reactive chemical unit, each having covalently bonded to it at least one latent reactive group selected from the group consisting of photoactivatable ketones, under conditions which enable the reactive chemical unit molecules to orient spatially so as to enable the latent reactive group to come into covalent bonding proximity with the substrate surface; (b) activating the latent reactive groups by application of the external stimulus to covalently bond the reactive chemical unit molecules to the substrate surface; (c) providing a different monomer, oligomer, or polymer capable of being covalently bound to the reactive chemical unit molecules covalently bound to the substrate surface; (d) contacting and covalently bonding the different monomer, oligomer or polymer with the bound reactive chemical unit.
Claim 2
Independent Claim
154 words
A method of providing a polymer to a substrate having a solid surface, the method comprising the steps of sequentially: (a) contacting the substrate surface with a composition comprising a plurality of molecules of a reactive chemical unit, each having covalently bonded to it at least one latent reactive group selected from the group consisting of photoactivatable ketones, under conditions which enable the reactive chemical unit molecules to orient spatially so as to enable the latent reactive group to come into covalent bonding proximity with the substrate surface; (b) activating the latent reactive groups by application of the external stimulus to covalently bond the reactive chemical unit molecules to the substrate surface; (c) providing a different monomer, oligomer, or polymer capable of being covalently bound to the reactive chemical unit molecules covalently bound to the substrate surface; (d) contacting and covalently bonding the different monomer, oligomer or polymer with the bound reactive chemical unit.
Claim 3
Dependent Claim
25 words
A method according to claim 1 wherein the reactive chemical unit comprises a functionality selected from the group consisting of carboxyl, hydroxyl, amino, and N-oxysuccinimide.
Claim 4
Dependent Claim
38 words
A method according to claim 1 wherein the reactive chemical unit is in the form of a monomer or oligomer, and is capable of entering into a polymerization reaction with added monomers or oligomers to produce polymer chains.
Claim 5
Dependent Claim
34 words
A method according to claim 3 wherein the reactive chemical unit is an ethylenically unsaturated monomer or oligomer capable of entering into a polymerization reaction with added monomers or oligomers to produce polymer chains.
Claim 6
Dependent Claim
29 words
A method according to claim 3 wherein the reactive chemical unit enters into a free radical initiated addition polymerization reaction with added monomers or oligomers to produce polymer chains.
Claim 7
Dependent Claim
20 words
A method according to claim 1 wherein the photoactivatable ketone is selected from the group consisting of benzophenones and acetophenones.
Claim 8
Dependent Claim
49 words
A method according to claim 1 wherein the photoactivatable ketone is selected from the group consisting of benzophenones and acetophenones, and wherein the reactive chemical unit is an ethylenically unsaturated monomer or oligomer capable of entering into a polymerization reaction with added monomers or oligomers to produce polymer chains.
Claim 9
Dependent Claim
47 words
A method according to claim 1 wherein the photoactivatable ketone is selected from the group consisting of benzophenones and acetophenones, and wherein the reactive chemical unit is capable of entering into a free radical initiated addition polymerization reaction with added monomers or oligomers to produce polymer chains.
References Cited (Backward Citations)
US3130060A
Cited
US3320116A
Cited
US4464468A
Cited
US3639123A
Cited
US3878019A
Cited
US3955012A
Cited
US3808113A
Cited
US3807999A
Cited
US3888833A
Cited
US3826678A
Cited
US3959078A
Cited
US4039652A
Cited
US4007089A
Cited
US4046577A
Cited
US4419444A
Cited
US4160698A
Cited
US4307071A
Cited
US4273873A
Cited
US4233402A
Cited
US4343885A
Cited
US4321319A
Cited
US4309453A
Cited
US4240163A
Cited
US4378435A
Cited
US4304705A
Cited
US4331697A
Cited
US4378224A
Cited
US4326532A
Cited
US4589964A
Cited
US4311573A
Cited
US4413052A
Cited
US4873033A
Cited
US4530974A
Cited
US4451568A
Cited
US4434150A
Cited
US4833093A
Cited
US4589881A
Cited
US4536179A
Cited
US5217492A
Cited
US5002582A
Cited
US4973493A
Cited
US5512329A
Cited
US4722906A
Cited
US4526714A
Cited
US4663163A
Cited
US4605413A
Cited
US4500676A
Cited
US4526909A
Cited
US4595632A
Cited
US4743258A
Cited
US4716122A
Cited
US4597999A
Cited
US4833218A
Cited
US4828563A
Cited
US4678808A
Cited
US4663233A
Cited
US4657820A
Cited
US4715858A
Cited
US4979959A
Cited
US4987032A
Cited
US5154808A
Cited
US5002883A
Cited
US4948819A
Cited
US5128170A
Cited
US5208166A
Cited
US5217743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-04-20 | 2001-10-20 | 2002-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-20 | 2005-10-20 | 2006-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-20 | 2009-10-20 | 2010-04-21 | $7700.00 | Window Closed / Lapsed |