US4490497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for surgical cement, based on at least one acrylic monomer and at least one acrylic polymer
Assignee: CLI Sarl A CORP OF FRANCE
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Filing: 1982-11-22
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Granted: 1984-12-25
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Expires: 2002-11-22
Abstract
Abstract A component system for surgical cement, based on at least one acrylic monomer and at least one acrylic polymer comprising a powder and a liquid. The powder comprises: (a) from 50 to 70 weight percent of at least one acrylic polymer having a particle size of between 20 and 150 microns; and (b) a polymerization initiator. The liquid comprises: (a) from 30 to 50 weight percent of a mixture comprising at least 65 weight percent of at least one acrylic monomer and up to 35 weight percent of at least one acrylic polymer; (b) at least one polymerization activator; and (c) from 0.05 to 1 weight percent, relative to the total amount of acrylic monomer, of at least one chain stopper chosen from the group consisting of diunsaturated monocyclic terpenes and monounsaturated bicyclic terpenes. Application to the manufacture of surgical cements.
Inventors
- 👤 Paul Evrard
- 👤 Michel Lahille
- 👤 Michel Avenel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:31
CPC Classifications
A; A61; A61L; A61L24/00; A61L24/04; A61L24/06; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; A61L2430/00; A61L2430/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
129 words
A component system for forming a surgical cement comprising a powder and a liquid, wherein said powder comprises: (a) 50 to 70 weight percent of at least one acrylic polymer having a particle size of between 20 and 150 microns; and (b) a polymerization initiator, and wherein said liquid comprises: (a) 30 to 50 weight percent of a mixture comprising at least 65 weight percent of at least one acrylic monomer and up to 35 weight percent of at least one acrylic polymer; (b) at least one polymerization activator; and (c) from 0.05 to 1 weight percent, relative to the total amount of said acrylic monomer in said liquid, of at least one chain stopping agent chosen from the group consisting of diunsaturated monocyclic terpenes and monounsaturated bicyclic terpenes.
Claim 2
Dependent Claim
129 words
A component system for forming a surgical cement comprising a powder and a liquid, wherein said powder comprises: (a) 50 to 70 weight percent of at least one acrylic polymer having a particle size of between 20 and 150 microns; and (b) a polymerization initiator, and wherein said liquid comprises: (a) 30 to 50 weight percent of a mixture comprising at least 65 weight percent of at least one acrylic monomer and up to 35 weight percent of at least one acrylic polymer; (b) at least one polymerization activator; and (c) from 0.05 to 1 weight percent, relative to the total amount of said acrylic monomer in said liquid, of at least one chain stopping agent chosen from the group consisting of diunsaturated monocyclic terpenes and monounsaturated bicyclic terpenes.
Claim 3
Dependent Claim
31 words
The component system of claim 1, wherein said polymerization activator comprises 1 to 5 weight percent, relative to the total amount of said acrylic monomer in said liquid, of said liquid.
Claim 4
Dependent Claim
12 words
The component system of claim 1, wherein said polymerization activator is N,N-dimethyl-para-toluidene.
Claim 5
Dependent Claim
13 words
The component system of claim 1, wherein said chain stopping agent is terpinolene.
Claim 6
Dependent Claim
19 words
The component system of claim 1, wherein said polymerization activator is N,N-dimethyl-para-toluidene and said chain stopping agent is terpinolene.
Claim 7
Dependent Claim
32 words
The component system of claim 1, wherein said liquid further comprises from 0.001 to 0.03 weight percent, relative to the total amount of said acrylic monomer in said liquid, of a stabilizer.
Claim 8
Dependent Claim
18 words
The component system of claim 6, wherein said stabilizer is selected from the group consisting of alkyl-substituted monophenols.
Claim 9
Dependent Claim
11 words
The component system of claim 7, wherein said stabilizer is 6-tertbutyl-2,4,-dimethylphenol.
Claim 10
Dependent Claim
137 words
A component system for forming a surgical cement comprising a powder and a liquid, wherein said powder comprises: (a) 50 to 70 weight percent of at least one acrylic polymer having a particle size of between 20 and 150 microns; and (b) a polymerization initiator, and wherein said liquid comprises: (a) 30 to 50 weight percent of a mixture comprising at least one acrylic monomer and up to 35 weight percent of at least one acrylic polymer; (b) 1 to 5 weight percent, relative to the total amount of said acrylic monomer in said liquid, of N,N-dimethyl-para-toluidene; (c) from 0.05 to 1 weight percent, relative to the total amount of said acrylic monomer, of terpinolene; and (d) from 0.001 to 0.03 weight percent, relative to the total amount of said acrylic monomer in said liquid, of 6-tertbutyl-2,4,-dimethylphenol.
Claim 11
Dependent Claim
137 words
A component system for forming a surgical cement comprising a powder and a liquid, wherein said powder comprises: (a) 50 to 70 weight percent of at least one acrylic polymer having a particle size of between 20 and 150 microns; and (b) a polymerization initiator, and wherein said liquid comprises: (a) 30 to 50 weight percent of a mixture comprising at least one acrylic monomer and up to 35 weight percent of at least one acrylic polymer; (b) 1 to 5 weight percent, relative to the total amount of said acrylic monomer in said liquid, of N,N-dimethyl-para-toluidene; (c) from 0.05 to 1 weight percent, relative to the total amount of said acrylic monomer, of terpinolene; and (d) from 0.001 to 0.03 weight percent, relative to the total amount of said acrylic monomer in said liquid, of 6-tertbutyl-2,4,-dimethylphenol.
Claim 12
Dependent Claim
38 words
A process for the manufacture of a surgical cement, wherein the component system of claim 1 is poured, at a temperature of between about 10° and 30° C. into a space where a prosthesis is to be placed.
References Cited (Backward Citations)
US3880803A
Cited
US4341691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |