Swellable bead polymer containing fillers

Details Swellable bead polymer containing fillers Swellable bead polymer containing fillers

1991-02-07

1996-08-20

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523115, 523205, 523220, 523221, 5263231, 5263232, 4332281, C08K 320, C08L 3308, B32B 516

Patent

active

055480012

ABSTRACT:
In the filling of a buccal area tooth, wherein a polymerizable dental material containing a cross-linked bead poller is filled into the tooth and permitted to set, wherein the bead polymer has an average particle diameter of 2 to 100 .mu.m an inorganic filler content of to 50% by weight and a degree of swelling of 50 to 2000%, measured in THF, and is synthesized from
A: 10 to 78% by weight of C.sub.1 -C.sub.2 -alkyl (meth)acrylate
B: 5 to 10% by weight of C.sub.3 -C.sub.12 -alkyl (methacrylate)
C: 1 to 30% by weight of cross-linker
D: 10 to 75% by weight of an inorganic filler, and
E: 0 to 30% by weight of at least one other ethylenically unsaturated monomer.
The cross-linked bead polymer is new, has a solid consistency, is storable and is especially useful for filling teeth in the buccal area.

REFERENCES:
patent: 5039475 (1991-08-01), Chida et al.
patent: 5039718 (1991-08-01), Ashley et al.

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