摘要:
For filling and forming teeth, novel (meth)acrylic acid derivatives of triisocyanates of the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and stand for hydrogen or a lower alkyl radical,R.sup.3, R.sup.4 and R.sup.5 are identical or different and denote hydrogen or methyl,Y.sup.1 to Y.sup.3 are identical or different and denote divalent straight-chain or branched hydrocarbon radicals of 2 to 15 carbon atoms which may optionally include 1 to 3 oxygen bridges and which may be unsubstituted or substituted by 1 to 4 additional (meth)acryloyloxy radicals,X.sup.1 to X.sup.3 are identical or different and denote --NR.sup.1 -- or --O--, at least one of the radicals X.sup.1 to X.sup.3 denoting --NR.sup.1 --, and the ringsA and B are identical or different and may be aromatic or saturated.
摘要:
New (meth)-acrylates of siloxanes containing tricyclodecane groups having the formula ##STR1## are prepared by reacting poly(hydroxymethyl-tricyclo [5.2.1.0.sup.2.6 ]decanyl)siloxanes, or the alkylene oxide adducts thereof with (meth)acrylic acid or a derivative thereof or with an isocyanato (meth)acrylate.These compounds can be employed as monomers to prepare polymers and dental materials.
摘要:
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 fromA: 10 to 78% by weight of C.sub.1 -C.sub.2 -alkyl (meth)acrylateB: 5 to 10% by weight of C.sub.3 -C.sub.12 -alkyl (methacrylate)C: 1 to 30% by weight of cross-linkerD: 10 to 75% by weight of an inorganic filler, andE: 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.
摘要:
A hard, resistant material formed by mixing and curinga) at least one polyfunctional silicopolyether,b) at least one monomer which can be subjected to free-radical curing,c) at least one catalyst for polymerization of the free-radical monomers at high temperature, low temperature or under the influence of light, andd) at least one catalyst for the condensation of the silicopolyether.
摘要:
The new (meth)acrylic acid derivatives, containing urethane groups, of tricyclo[5.2.1.0.sup.2.6 ]decanes can be prepared by reaction of hydroxyalkyl (meth)acrylic acid esters with diisocyanates and subsequent reaction with polyols. The compounds can be used for dental materials.
摘要:
A method of making a dental impression which comprises applying to the structure of which an impression is to be made a special prepolymer. The prepolymer is composed of units of at least one macrodiol, at least one aliphatic polyisocyanate, and an unsaturated monoalcohol as chain terminator, wherein the average functionality of the prepolymer based on the unsaturated groups is >2.
摘要:
For filling and forming teeth, novel (meth)acrylic acid derivatives of triisocyanates of the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and stand for hydrogen or a lower alkyl radical,R.sup.3, R.sup.4 and R.sup.5 are identical or different and denote hydrogen or methyl,y.sup.1 to y.sup.3 are identical or different and denote divalent straight-chain or branched hydrocarbon radicals of 2 to 15 carbon atoms which may optionally include 1 to 3 oxygen bridges and which may be unsubstituted or substituted by 1 to 4 additional (meth)acryloyloxy radicals,X.sup.1 to X.sup.3 are identical or different and denote --NR.sup.1 -- or --O--, at least one of the radicals X.sup.1 to X.sup.3 denoting --NR.sup.1 --, and the ringsA and B are identical or different and may be aromatic or saturated.
摘要:
The invention relates to new N-alkyl-N-(meth)acryloyloxyalkylcarboxamides of aromatic carboxylic acids and aromatic carboxylic acid anhydrides, their preparation and formulations of these compounds for use as adhesives for the treatment of dental hard substance.
摘要:
Coating agent for collagen-containing materials, comprising an aldehyde, unsaturated monomers with and without active hydrogen, solubilizers and/or dispersants, activators and conventional additives.
摘要:
Acrylic and methacrylic esters of substituted 1,2-bis(phenoxy)-3,3,4,4,5,5-hexafluoro-1-cyclopentenes of the formula ##STR1## in which, in each case independently of one another, R.sup.1 and R.sup.2 denote C.sub.1 -to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -halogenoalkyl or hydrogen,R.sup.3 and R.sup.4 denote (n+1)- or (m+1)-valent, straight-chain or branched hydrocarbon radicals having 2 to 15 carbon atoms, which may optionally contain 1 to 3 oxygen bridges,R.sup.5 and R.sup.6 denote hydrogen or methyl,X represents ##STR2## and n and m denote integers from 1 to 5The ester can be polymerized to form dental fillings, coatings and artificial teeth.