EP0407056A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Curable resins with reduced foaming characteristics and articles incorporating same
Assignee: 3M Co
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Filing: 1990-06-19
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Granted: —
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Expires: 2010-06-19
Abstract
Abstract The present invention relates to novel curable resins and orthopedic casting materials incorporating such, which experience reduced foaming during cure, decreased set times, and/or increased warm wet strength after cure. The resins contain a stable dispersion of hydrophobic polymeric particles which are responsible for the foregoing benefits. The polymeric particles preferably are made from vinyl monomers.
Inventors
- 👤 Charles C. C/O Minnesota Mining And Polta
- 👤 Matthew T. C/O Minnesota Mining And Scholz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 04:09
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/07; A61L15/12; A61L27/00; B; B32; B32B; B32B27/00; B32B27/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
25 words
An article, comprising: a fabric sheet; and a water-curable resin coated onto said fabric sheet, said resin having a stable dispersion of hydrophobic polymeric particles.
Claim 2
Dependent Claim
25 words
An article, comprising: a fabric sheet; and a water-curable resin coated onto said fabric sheet, said resin having a stable dispersion of hydrophobic polymeric particles.
Claim 3
Dependent Claim
20 words
An article, as defined in claim 1, wherein said polymeric particles act to decrease the set time of the article.
Claim 4
Dependent Claim
22 words
An article as defined in claim 1, wherein said polymeric particles act to increase the wet strength of the article after cure.
Claim 5
Dependent Claim
20 words
An article as defined in claim 1, wherein said polymeric particles act to reduce foaming of said resin during cure.
Claim 6
Dependent Claim
21 words
An article as defined in claim 1, wherein said polymeric particles have an average diameter of less than about 20 microns.
Claim 7
Dependent Claim
20 words
An article as defined in claim 5, wherein said polymeric particles have an average diameter of greater than 0.01 micron.
Claim 8
Dependent Claim
21 words
An article as defined in claim 6, wherein said polymeric particles have an average diameter of less than about 10 microns.
Claim 9
Dependent Claim
24 words
An article as defined in claim 7, wherein said polymeric particles have an average diameter of from about 0.3 micron to about 5 microns.
Claim 10
Dependent Claim
16 words
An article as defined in claim 1, wherein said water-curable resin comprises an isocyanate-functional, polyurethane prepolymer.
Claim 11
Dependent Claim
15 words
An article as defined in claim 1, wherein said article is an orthopedic casting material.
Claim 12
Dependent Claim
24 words
An orthopedic casting material as defined in claim 10 wherein said fabric sheet has a plurality of projections on at least one side thereof.
Claim 13
Dependent Claim
43 words
An orthopedic casting material as defined in claim 11 wherein each said projection comprises a bundle of at least about 8 filaments and wherein said side of said fabric sheet has from about 75 to about 1500 projections per gram of fabric sheet.
Claim 14
Dependent Claim
16 words
An article as defined in claim 1, wherein said polymeric particles are made from vinyl monomers.
Claim 15
Dependent Claim
13 words
An article as defined in claim 1, wherein said polymer particles comprise polyacrylonitrile.
Claim 16
Dependent Claim
18 words
An article as defined in claim 1, wherein said polymeric particles comprise a copolymer of acrylonitrile and styrene.
Claim 17
Dependent Claim
15 words
An orthopedic casting material as defined in claim 1, wherein said polymeric particles comprise polyurea.
Claim 18
Dependent Claim
17 words
An article as defined in claim 1, wherein said polymeric particles are comprised of epoxy resin-based polymers.
Claim 19
Dependent Claim
23 words
An article as defined in claim 1, wherein said polymeric particles comprise from about 0.5% to about 10% by weight of said resin.
Claim 20
Dependent Claim
44 words
An article as defined in claim 1, wherein said water-curable resin is an isocyanate functional, polyurethane prepolymer formed by the reaction of a polyol with a polyisocyanate, and wherein said polymeric particles comprise from about 10% to about 45% by weight of said polyol.
Claim 21
Dependent Claim
13 words
An article as defined in claim 1, wherein said fabric sheet comprises fiberglass.
References Cited (Backward Citations)
No citation records indexed.
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