Interpenetrating polymer network compositions employing rubber-modified polymers
AssigneeDentsply Research & Development Corp.
InventorsLouis H. Tateosian, W. Donald Wilson
Life of this patent
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Abstract
This invention provides hardenable compositions useful as construction media for a wide range of applications. Particular utility is found in the dental and medical arts where such compositions are highly suitable for the formation and construction of denture base, denture baseplates, denture liners, denture repair, custom trays, veneering for crowns and bridgework, artificial teeth, veneers and repair for natural teeth, and tooth restorative fillings. Such materials having improved impact strengths and elastic moduli when hardened are disclosed which include rubber-modified polymer.
Claims35
A polymerizable composition comprising:
- a) from about 10 to about 70 weight percent of multifunctional crosslinking composition that comprises at least about 50 percent oligomeric material;
- b) from about 3 to about 70 wight percent of polymer composition comprising crosslinked polymer in the form of discrete particles that are not swellable in said multifunctional crosslinking composition at 24.degree. C., said particles have been swollen by imbibing said crosslinking composition at temperatures above about 39.degree. C.
A polymerizable composition comprising:
- a) from about 10 to about 70 weight percent of a multifunctional crosslinking composition having at least about 50 percent oligomeric material having a molecular weigh of at least 250;
- and
- b) from about 3 to about 70 weight percent of a polymer composition comprising crosslinked polymer int e form of discrete particles that have been swollen by imbibing said crosslinking composition at temperatures above about 35.degree. C. and below about 80.degree. C., said particles are not swellable in said multi-functional crosslinking composition at 25.degree. C.
A polymerizable composition comprising:
- a) from about 10 to about 70 weight percent of multifunctional cross-linking composition that comprises at least about 50 percent multifunctional cross-linking agent;
- b) from about 3 to about 70 weight percent of polymer composition comprising cross-lined polymer in the form of discrete particles that are not swellable in said multifunctional cross-linking composition at 24.degree. C., said particles have been swollen by imbibing said cross-linking composition at temperatures above about 39.degree. C.
A polymerizable composition comprising:
- a) from about 10 to about 70 weight percent of a multifunctional crosslinking composition having at least about 50 percent multifunctional cross-linking agent having a molecular weight of at lest 250;
- and
- b) from about 3 to about 70 weight percent of a polymer composition comprising cross-linked polymer in the form of discrete particles that have been swollen by imbibing said cross-lining composition at temperatures above about 35.degree. C. and below abut 80.degree. C., said particles are not swellable in said multifunctional cross-linking composition at 24.degree. C.
Dependencies are inferred from the claim text.