Patent EP0389632A1 successfully refreshed from Google Patents.
EP0389632A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Slippery medical material and process for its production
Assignee: Toray Industries Inc
•
Filing: 1989-08-09
•
Granted: —
•
Expires: 2009-08-09
Abstract
Abstract A medical material having excellent slipperiness and durability which have not been attained by the prior art and a process for its production are disclosed. This material comprises a base material having fixed to the surface thereof a hydrophilic polymer via strong covalent bonds.
Inventors
- 👤 Ryojiro Akashi
- 👤 Shoji Nagaoka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 05:50
CPC Classifications
A; A61; A61L; A61L27/00; A61L29/00; A61L29/08; A61L29/085; A61L27/28; A61L27/34; A61L31/00; A61L31/08; A61L31/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
81 words
An easily-slippery medical material wherein the surface of a base material coated with the following component A is coated with the following component B. Component A: A polymer having at least one reactive functional group selected from alkali metal alcoholate groups, amino group, alkali metal amide groups, carboxylic acid group, sulfonic acid group, magnesium halide groups and fluorinated boron complex groups. Component B: A hydrophilic polymer having a reactive heterocyclic group being reactive with reactive functional groups in the component A.
Claim 2
Dependent Claim
81 words
An easily-slippery medical material wherein the surface of a base material coated with the following component A is coated with the following component B. Component A: A polymer having at least one reactive functional group selected from alkali metal alcoholate groups, amino group, alkali metal amide groups, carboxylic acid group, sulfonic acid group, magnesium halide groups and fluorinated boron complex groups. Component B: A hydrophilic polymer having a reactive heterocyclic group being reactive with reactive functional groups in the component A.
Claim 3
Dependent Claim
18 words
An easily-slippery medical material as described in Claim wherein the component A is a polymer having amino groups.
Claim 4
Dependent Claim
26 words
An easily-slippery medical material as described in Claim 1 wherein the content of said reactive functional groups in the component A is 0.1 - 50 wt.%.
Claim 5
Dependent Claim
74 words
An easily-slippery medical material as described in Claim 1 wherein the reactive heterocyclic group in the component B is at least one selected from the groups consisting of ethylene oxide group, propylene oxide group, ethylene sulfide group, propylene sulfide group, cyclooxabutane group, lactam and lactone groups of a 3 or 4 membered ring, amino acid-N-carboxylic acid anhydride group, oxazolidine group, ethylene-imine group, propylene-imine group, cyclic ether groups, cyclic azaether groups and cyclic thioether groups.
Claim 6
Dependent Claim
24 words
An easily-slippery medical material as described in Claim 1 or 2 wherein the reactive heterocyclic group in the component B is ethylene oxide group.
Claim 7
Dependent Claim
26 words
An easily-slippery medical material as described in Claim 1 wherein the content of the reactive heterocyclic group in the component B is 0.01 - 50 wt.%.
Claim 8
Dependent Claim
29 words
An easily-slippery medical material as described in Claim 1 wherein the component B is a copolymer consisting of a monomer having a reactive heterocyclic group and a hydrophilic monomer.
Claim 9
Dependent Claim
29 words
An easily-slippery medical material as described in Claim 7 wherein the hydrophilic monomer is at least one selected from the group consisting of (meth)-acrylamide, N-vinylpyrrolidone and monomethoxytriethylene glycol mono(meth)acrylate.
Claim 10
Independent Claim
85 words
A method for preparation of an easily-slippery medical material characterized by a process wherein the surface of a base material coated with the following component A is coated with the following component B containing a crosslinking agent or no crosslinking agent and then the component B is crosslinked. Component A: A polymer having at least one reactive functional group. Component B: A hydrophilic polymer having a reactive heterocyclic group being capable of forming a covalent bond with the reactive functional group in the component A.
Claim 11
Independent Claim
85 words
A method for preparation of an easily-slippery medical material characterized by a process wherein the surface of a base material coated with the following component A is coated with the following component B containing a crosslinking agent or no crosslinking agent and then the component B is crosslinked. Component A: A polymer having at least one reactive functional group. Component B: A hydrophilic polymer having a reactive heterocyclic group being capable of forming a covalent bond with the reactive functional group in the component A.
Claim 12
Dependent Claim
54 words
A method for preparation of an easily-slippery medical material as described in Claim 9 wherein the component A is a polymer having at least one reactive functional group selected among alkali metal alcoholate groups, amino groups, alkali metal amide groups, carboxylic acid group, sulfonic acid group, magnesium halide groups and fluorinated boron complex groups.
Claim 13
Dependent Claim
24 words
A method for preparation of an easily-slippery medical material as described in Claim 9 wherein the component A is a polymer having amino groups.
Claim 14
Dependent Claim
32 words
A method for preparation of an easily slippery medical material as described in Claim 9 wherein the content of said reactive functional groups in the component A is 0.1 - 50 wt.%.
Claim 15
Dependent Claim
78 words
A method for preparation of an easily-slippery medical material as described in Claim 9 wherein the reactive heterocyclic group in the component B is at least one selected from the groups consisting of ethylene oxide group, propylene oxide group, ethylene sulfide group, propylene sulfide group, cyclooxabutane group, lactam and lactone groups of 3 or 4 membered ring, amino acid-N-carboxylic acid anhydride group, oxazolidine group, ethylene-imine group, propylene-imine group, cyclic ether groups, cyclic azaether groups and cyclic thioether groups.
Claim 16
Dependent Claim
30 words
A method for preparation of an easily-slippery medical material as described in Claim 9 or Claim 11 wherein the reactive heterocyclic group in the component B is ethylene oxide group.
Claim 17
Dependent Claim
34 words
A method for preparation of an easily-slippery medical material as described in Claim 9 wherein the component B is a copolymer consisting of a monomer having a reactive heterocyclic group and a hydrophilic monomer.
Claim 18
Dependent Claim
34 words
A method for preparation of an easily-slippery medical material as described in Claim 15 wherein the hydrophilic monomer is at least one selected from the group consisting of (meth)acrylamide, N-vinylpyrrolidone and monomethoxy-triethylene glycol mono(meth)acrylate.
Claim 19
Dependent Claim
31 words
A method for preparation of an easily-slippery medical material as described in Claim 9 characterized by using a peroxide, an azo compound or a polymerizable polyfunctional monomer as a crosslinking agent.
Claim 20
Dependent Claim
30 words
A method for preparation of an easily-slippery medical material as described in Claim 9 characterized by carrying out a heat-treatment after coating with the component A and the Component B.
Claim 21
Dependent Claim
28 words
A method for preparation of an easily-slippery medical material as described in Claim 18 characterized by carrying out a heat-treatment at 30-200°C for 1 min - 24 hr.
Claim 22
Dependent Claim
24 words
A method for preparation of an easily-slippery medical material as described in Claim 18 characterized by carrying out a heat-treatment in an inert gas.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.