The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 2016
Filed:
Aug. 06, 2009
Joachim Klee, Radolzfell, DE;
Uwe Lehmann, Constance, DE;
Anja Glaner, Constance, DE;
DENTSPLY International Inc., York, PA (US);
Abstract
Self-adhesive dental restorative composition comprising (i) 10 to 40 percent by weight based on the total weight of the composition of a mixture of hydrolysis-stable polymerizable monomers of the following formula (I): wherein R is a m+n valent organic group having 1 to 20 carbon atoms and optionally 1 to 5 atoms selected from the group of nitrogen, oxygen and sulfur atoms; A independently represents a moiety of the following formula (II): wherein L is a hydrogen atom, a C1-6 alkyl group, a C3-8 cycloalkyl group, a C6-14 aryl group or a group of the following formula (III) wherein R' is a hydrogen atom, a C1-6 alkyl group, a C3-8 cycloalkyl group, or a C6-14 aryl group; X is O, S, NH or NR″ wherein R″ is a C1-6 alkyl group, a C3-8 cycloalkyl group, a C6-14 aryl group; a is 0 or 1; M is a group of the following formula (IV) wherein Y is O, S, NH or NR′″ wherein R′″ is a C1-6 alkyl group, a C3-8 cycloalkyl group, a C6-14 aryl group; b is an integer of from O to 3; c is O or 1; d is an integer of from O to 3; provided that when b is O, then Y cannot be O; x is 0 or 1; y is 0 or 1; provided that x and y cannot be both 1, and provided that x cannot be 1 when L or a group of formula (III) is a hydrogen atom, and provided that when x is 0 then a is also 0, and provided that when y is 0 then b is greater than 0 or c is 0; B independently represents an acidic group; m is an integer of from 1 to 5; n is an integer of 0 to 3; and m+n is at least 2; (ii) 60 to 90 percent by weight based on the total weight of the composition of a filler; and (iii) an initiator system; wherein the portion of monomers of formula (I) wherein n is greater than 0 is at least 1 percent by weight based on the total weight of the mixture.