	US 7,456,232 B2
	Use of branched polyacids in dental compounds
Markus Mikulla, Andechs-Frieding (Germany); Guenther Lechner, Woerthsee (Germany); Klaus-Peter Stefan, Seefeld (Germany); Gabriele Rackelmann, Gilching (Germany); and Gunther Eckhardt, Bad Duerrenberg (Germany)
Assigned to 3M ESPE AG, Seefeld (Germany)
Appl. No. 10/432,946 PCT Filed Nov. 19, 2001, PCT No. PCT/EP01/13363 § 371(c)(1), (2), (4) Date Dec. 22, 2003, PCT Pub. No. WO02/41846, PCT Pub. Date May 30, 2002.
Claims priority of application No. 100 58 830 (DE), filed on Nov. 27, 2000.
Prior Publication US 2004/0254260 A1, Dec. 16, 2004
Int. Cl. A61K 6/083 (2006.01); C08F 290/04 (2006.01)

U.S. Cl. 523—116 [523/117; 523/206; 524/504]

19 Claims

1. A dental material including:

A. 1 to 60% by weight of polyacids, in which the polyacids used have at least one branching point in the polymer structure, are water-soluble and noncrosslinked and, with regard to the repeat units, comprise at least 80 mol % acrylic acid segments, the term “branching point” being understood as meaning a position in the polymer backbone from which, covalently bonded, at least two polymer residues start out, these comprising at least three repeat units;

B. 35 to 80% by weight of fillers;

C. 0 to 20% by weight of additives and auxiliaries;

D. 5 to 40% by weight of water.