EP0332405A2
Expired / Lapsed
EP
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Surgical adhesive
Assignee: Sanyo Chemical Industries Ltd
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Filing: 1989-03-07
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Granted: —
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Expires: 2009-03-07
Abstract
Abstract Elastomeric or flexible surgical adhesives, arising [A] NCO-tested hydrophilic urethane prepolymer derived from fluorine-containing polyisocyanate and hydrophilic polyether polyol of higher oxyethylene content, or combination of [A] with [B] unsaturated cyano compound containing cyano group attached to a carbon atom constituting the polyerizable double bond, are of lower toxicity and used with safety for bonding of tissues, with rapid cure rate and sufficient bonding power.
Inventors
- 👤 Takehisa Matsuda
- 👤 Teruo Takakura
- 👤 Tetsuo Itoh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 01:11
CPC Classifications
C; C09; C09J; C09J175/00; C09J175/04; C09J175/08; A; A61; A61L; A61L24/00; A61L24/0047; A61L24/0073; C08; C08F; C08F283/00; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6674; C08G18/70; C08G18/72; C08G18/77; C08G18/773; Y; Y10; Y10S; Y10S528/00; Y10S528/904
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
47 words
A surgical adhesive composition, which comprises at least one NCO-terminated hydrophilic urethane prepolymer, derived from (a) an organic polyisocyanate component comprising at least one fluorine-containing polyisocyanate or combination thereof with at least one other polyisocyanate and (b) a polyol component comprising at least one hydrophilic polyether polyol.
Claim 2
Dependent Claim
47 words
A surgical adhesive composition, which comprises at least one NCO-terminated hydrophilic urethane prepolymer, derived from (a) an organic polyisocyanate component comprising at least one fluorine-containing polyisocyanate or combination thereof with at least one other polyisocyanate and (b) a polyol component comprising at least one hydrophilic polyether polyol.
Claim 3
Dependent Claim
28 words
A composition according to Claim 1, wherein said fluorine-containing polyisocyanate is at least one polyisocyanate selected from the group consisting of fluorine-containing aliphatic polyisocyanates and fluorine-containing cycloaliphatic polyisocyanates.
Claim 4
Dependent Claim
53 words
A composition according to Claim 1, wherein said fluorine-containing polyisocyanate is at least one polyisocyanate selected from the group consisting of fluorine-containing diisocyanates of the fomula (1) or (2) : OCN-Rf-NCO (1) OCN-CH₂-Rf-CH₂-NCO (2) wherein Rf is a perfluoroalkylene group containing usually 1 to 20 carbon atoms and 0 to 10 ether linkages.
Claim 5
Dependent Claim
21 words
A composition according to Claim 1, 2 or 3, wherein said prepolymer has an isocyanate-content of 1 - 10% by weight.
Claim 6
Dependent Claim
47 words
A composition according to any one of Claims 1 to 4, wherein said hydrophilic polyether polyol is at least one adduct of ethylene oxide or a combination thereof with one or more other alkylene oxides to at least one compound containing two or more active hydrogen atoms.
Claim 7
Dependent Claim
43 words
A composition according to any one of Claims 1 to 5, wherein said said polyol component comprises said hydrophilic polyether polyol and at least one other polyol selected from the group consisting of low molecular weight polyols, hydrophobic polyether polyols and polyester polyols.
Claim 8
Dependent Claim
24 words
A composition according to any one of Claims 1 to 6, wherein said polyol component has an oxyethylene content of at least 30 %.
Claim 9
Dependent Claim
32 words
A composition according to any one of Claims 1 to 7, wherein said polyol component has an equivalent weight (average) of 100 - 5,000 and a functionality (average) of 2 - 8.
Claim 10
Dependent Claim
35 words
A composition according to any one of Claims 1 to 8, wherein said prepolymer is obtained by reacting said polyisocyanate with said polyol component in such an amount providing NCO/OH ratio of 1.5 - 5.0.
Claim 11
Dependent Claim
37 words
A composition according to any one of Claims 1 to 9, which comprises [A] said prepolymer, and [B] at least one unsaturated cyano compound containing cyano group attached to a carbon atom constituting the polymerizable double bond.
Claim 12
Dependent Claim
28 words
A composition according to Claim 10, which comprises 20 - 90 % by weight of said prepolymer and 10 - 80 % by weight of said cyano compound.
Claim 13
Dependent Claim
47 words
A composition according to any one of Claims 1 to 11, which contains up to 20 % by weight of at least one additive selected from the group consisting of carbon black, metal oxides, silicates, acrylic resin powders, ceramic powders, softening agents, stabilizers and physiologically active materials.
References Cited (Backward Citations)
No citation records indexed.
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