Patent US3872047A successfully refreshed from Google Patents.
US3872047A
Expired / Lapsed
US
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Composition and method for improving adherence of polymeric materials to substrates
Assignee: Individual
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Filing: 1972-12-04
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Granted: 1975-03-18
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Expires: 1992-12-04
Abstract
Abstract A primer composition and method for improving adhesion of polymeric material to metal ion containing substrate is provided. The primer consists of a solution of a polymer whose chain contains polar groups, such as carboxy, hydroxy, groups and the like, and non-polar monoethylenically unsaturated terminal groups. The primer is applied to the surface to be treated, the solvent evaporated and the polymeric material applied and cured in the usual way. The bond tensile strength of samples employing the primer composition is substantially increased as compared to the bond tensile strength of samples not employing the primer composition of this invention.
Inventors
- 👤 Hana Jandourek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:21
CPC Classifications
C; C09; C09J; C09J201/00; C09J201/02; A; A61; A61K; A61K6/00; A61K6/30; Y; Y10; Y10S; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A PRIMER TO IMPROVE THE ADHERENCE OF A FREE RADICAL POLYMERIZED DENTAL RESTORATIVE MATERIAL COMPRISING A POLAR LOW ALIPHATIC ALCOHOL LIQUID SOLVENT HAVING A BOILING POINT BETWEEN ABOUT 50*C AND 150* AND CONTAINING IN SOLUTION A POLYMERIC COMPOSITION CHARACTERIZED BY CONTAINING HIGH POLAR, HYDROPHILLIC SURFACE ACTIVE GROUPS AND LOW POLAR HYDROPHOBIC REACTIVE GROUPS, SAID LOW POLAR REACTIVE GROUPS BEING LOCATED IN TERMINAL POSITIONS IN THE STRUCTURE OF SAID POLYMERIC MATERIAL, SAID POLYMERIC MATERIAL BEING THE REACTION PRODUCT OF POLYACRYLIC ACID AND A MONOMER SELECTED FROM THE GROUP CONSISTING OF GLYCIDYL METHACRYLATE AND SULFOETHYLMETHACRYLATE, THE MOL RATIO OF SAID POLYACRYLIC ACID TO SAID MONOMER IS BETWEEN 0.1:1 TO ABOUT 1:1 ON MOL WEIGHT/MOL WEIGHT BASIS.
Claim 2
Dependent Claim
114 words
A PRIMER TO IMPROVE THE ADHERENCE OF A FREE RADICAL POLYMERIZED DENTAL RESTORATIVE MATERIAL COMPRISING A POLAR LOW ALIPHATIC ALCOHOL LIQUID SOLVENT HAVING A BOILING POINT BETWEEN ABOUT 50*C AND 150* AND CONTAINING IN SOLUTION A POLYMERIC COMPOSITION CHARACTERIZED BY CONTAINING HIGH POLAR, HYDROPHILLIC SURFACE ACTIVE GROUPS AND LOW POLAR HYDROPHOBIC REACTIVE GROUPS, SAID LOW POLAR REACTIVE GROUPS BEING LOCATED IN TERMINAL POSITIONS IN THE STRUCTURE OF SAID POLYMERIC MATERIAL, SAID POLYMERIC MATERIAL BEING THE REACTION PRODUCT OF POLYACRYLIC ACID AND A MONOMER SELECTED FROM THE GROUP CONSISTING OF GLYCIDYL METHACRYLATE AND SULFOETHYLMETHACRYLATE, THE MOL RATIO OF SAID POLYACRYLIC ACID TO SAID MONOMER IS BETWEEN 0.1:1 TO ABOUT 1:1 ON MOL WEIGHT/MOL WEIGHT BASIS.
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein said polymeric composition comprises between about 0.0625 weight percent to about 10 weight percent thereof.
Claim 4
Dependent Claim
10 words
The composition of claim 1 wherein said solvent is n-butanol.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |