US4460747A
Expired / Lapsed
US
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Surface modified polymers
Assignee: PRESIDENT AND DIRECTOS OF GEORGETOWN UNIVERSITY
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Filing: 1981-08-27
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Granted: 1984-07-17
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Expires: 2001-08-27
Abstract
Abstract Polymers, the surfaces of which have been modified, are disclosed. The polymer surface is modified by embedding therein a second polymer. The modified polymer substantially retains its bulk properties while also possessing, at its surface, properties of the second polymer.
Inventors
- 👤 Vaclav Horak
- 👤 Jiri Janata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:10
CPC Classifications
A; A61; A61L; A61L33/00; A61L33/0005; A61L33/0011; C; C08; C08J; C08J7/00; C08J7/02; C08J7/04; C08J7/042; C08J7/0427; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; C08J2433/00; C08J2433/04; C08J2433/06; C08J2433/10; C08J2433/12; H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998; Y10T428/31504; Y10T428/31855; Y10T428/31909
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
145 words
A hydrophobic polymer having a modified surface prepared by a process comprising: (a) contacting said surface with a swelling solvent capable of swelling said polymer, whereby a swollen polymer surface is formed, (b) contacting said swollen polymer surface with a solution of a second polymer while maintaining said swollen polymer surface in a swollen state, said second polymer having a substantially linear backbone and a plurality of substantially linear aliphatic chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary, secondary, and tertiary amino; amido, N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate, and combinations thereof, whereby said second polymer becomes bound to said polymer surface, and (c) removing said swelling solvent from said swollen polymer surface.
Claim 2
Dependent Claim
145 words
A hydrophobic polymer having a modified surface prepared by a process comprising: (a) contacting said surface with a swelling solvent capable of swelling said polymer, whereby a swollen polymer surface is formed, (b) contacting said swollen polymer surface with a solution of a second polymer while maintaining said swollen polymer surface in a swollen state, said second polymer having a substantially linear backbone and a plurality of substantially linear aliphatic chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary, secondary, and tertiary amino; amido, N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate, and combinations thereof, whereby said second polymer becomes bound to said polymer surface, and (c) removing said swelling solvent from said swollen polymer surface.
Claim 3
Dependent Claim
19 words
The surface-modified polymer of claim 1, wherein each of said aliphatic chains has at least about five carbon atoms.
Claim 4
Dependent Claim
19 words
The surface-modified polymer of claim 1 wherein said second polymer has aliphatic chains substantially regularly spaced from one another.
Claim 5
Dependent Claim
41 words
The polymer of claim 1 wherein said pendent aliphatic chains on said second polymer are bound to said polymer backbone by hydrolyzable linkages, and after said second polymer is bound to the surface of said substrate polymer, said linkages are hydrolyzed.
Claim 6
Dependent Claim
17 words
The surface-modified polymer of claim 1, wherein said second polymer has at least about ten aliphatic chains.
Claim 7
Dependent Claim
18 words
The surface-modified polymeric substrate of claim 1, wherein said aliphatic chains contain at least about five carbon atoms.
Claim 8
Dependent Claim
142 words
A process for modifying a substrate hydrophobic polymer surface comprising: (a) contacting said surface with a swelling solvent capable of swelling said polymer, whereby a swollen polymer surface is formed, (b) contacting said swollen polymer surface with a solution of a second polymer while maintaining said swollen polymer surface in a swollen state, said second polymer having a substantially linear backbone and a plurality of substantially linear aliphatic chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary secondary, tertiary amino; amido; N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate and combinations thereof, whereby said second polymer becomes bound to said polymer surface, and (c) removing said swelling solvent from said swollen polymer surface.
Claim 9
Dependent Claim
142 words
A process for modifying a substrate hydrophobic polymer surface comprising: (a) contacting said surface with a swelling solvent capable of swelling said polymer, whereby a swollen polymer surface is formed, (b) contacting said swollen polymer surface with a solution of a second polymer while maintaining said swollen polymer surface in a swollen state, said second polymer having a substantially linear backbone and a plurality of substantially linear aliphatic chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary secondary, tertiary amino; amido; N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate and combinations thereof, whereby said second polymer becomes bound to said polymer surface, and (c) removing said swelling solvent from said swollen polymer surface.
Claim 10
Dependent Claim
41 words
The process of claim 7 wherein said pendent aliphatic chains on said second polymer are bound to said polymer backbone by hydrolyzable linkages, and after said second polymer is bound to the surface of said substrate polymer, said linkages are hydrolyzed.
Claim 11
Dependent Claim
144 words
A process for modifying the surface of a hydrophobic polymer, comprising swelling said polymer and maintaining said polymer in the swollen state under the following conditions: embedding the aliphatic side chains of a second polymer in the surface of said swollen polymer wherein said second polymer has a substantially linear backbone and substantially linear aliphatic side chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary, secondary, and tertiary amino; amido, N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate and combinations thereof, by treating the swollen polymer with a solution of said second polymer containing amounts of said second polymer effective to allow said second polymer to penetrate and embed the surface of said swollen polymer.
Claim 12
Dependent Claim
144 words
A process for modifying the surface of a hydrophobic polymer, comprising swelling said polymer and maintaining said polymer in the swollen state under the following conditions: embedding the aliphatic side chains of a second polymer in the surface of said swollen polymer wherein said second polymer has a substantially linear backbone and substantially linear aliphatic side chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary, secondary, and tertiary amino; amido, N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate and combinations thereof, by treating the swollen polymer with a solution of said second polymer containing amounts of said second polymer effective to allow said second polymer to penetrate and embed the surface of said swollen polymer.
Claim 13
Dependent Claim
144 words
A hydrophobic polymer having a modified surface prepared by a process comprising: swelling said polymer and retaining said polymer in the swollen state under the following conditions: embedding the aliphatic side chains of a second polymer in the surface of said swollen polymer, wherein said second polymer has a substantially linear backbone and substantially linear aliphatic side chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary, secondary, tertiary amino; amido; N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate, and combinations thereof, by treating the swollen polymer with a solution of said second polymer containing amounts of said second polymer effective to allow said second polymer to penetrate and embed the surface of said swollen polymer.
Claim 14
Dependent Claim
144 words
A hydrophobic polymer having a modified surface prepared by a process comprising: swelling said polymer and retaining said polymer in the swollen state under the following conditions: embedding the aliphatic side chains of a second polymer in the surface of said swollen polymer, wherein said second polymer has a substantially linear backbone and substantially linear aliphatic side chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary, secondary, tertiary amino; amido; N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate, and combinations thereof, by treating the swollen polymer with a solution of said second polymer containing amounts of said second polymer effective to allow said second polymer to penetrate and embed the surface of said swollen polymer.
Claim 15
Dependent Claim
19 words
The surface-modified polymer of claim 10, wherein each of said aliphatic chains has at least about five carbon atoms.
Claim 16
Dependent Claim
19 words
The surface-modified polymer of claim 10 wherein said second polymer has aliphatic chains substantially regularly spaced from one another.
Claim 17
Dependent Claim
17 words
The surface-modified polymer of claim 10, wherein said second polymer has at least about ten aliphatic chains.
Claim 18
Dependent Claim
17 words
The surface-modified polymer of claim 10, wherein said aliphatic chains contain at least about five carbon atoms.
Claim 19
Dependent Claim
90 words
A surface-modified polymeric substrate comprising (1) a hydrophobic polymeric substrate, and (2) a second polymer having a substantially linear backbone and substantially linear aliphatic side chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary, secondary, or tertiary amino; amido; N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate, and combinations thereof, wherein said aliphatic side chains are embedded in said polymeric surface.
Claim 20
Dependent Claim
90 words
A surface-modified polymeric substrate comprising (1) a hydrophobic polymeric substrate, and (2) a second polymer having a substantially linear backbone and substantially linear aliphatic side chains depending from and spaced along said backbone and a plurality of reactive groups as part of the polymer backbone or pendant from said polymer backbone wherein said reactive groups are selected from the group consisting of primary, secondary, or tertiary amino; amido; N-alkyl substituted amido, phosphine, carbamate, ether, ester, carboxylate, and combinations thereof, wherein said aliphatic side chains are embedded in said polymeric surface.
Claim 21
Dependent Claim
18 words
The surface-modified polymeric substrate of claim 15, wherein said aliphatic chains contain at least about five carbon atoms.
Claim 22
Dependent Claim
11 words
The surface-modified polymeric substrate of claim 15, wherein (1) is swellable.
Claim 23
Dependent Claim
20 words
The surface-modified polymeric substrate of claim 15, wherein each of said aliphatic chains has at least about five carbon atoms.
Claim 24
Dependent Claim
20 words
The surface-modified polymeric substrate of claim 15 wherein said second polymer has aliphatic chains substantially regularly spaced from one another.
Claim 25
Dependent Claim
21 words
The surface-modified polymeric substrate of claim 15 or claim 19, wherein said second polymer has at least about ten aliphatic chains.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |