Ciba-geigy Corporation

Basf Aktiengesellschaft

Rehau Ag + Co.

Degussa Aktiengesellschaft

Ciba Specialty Chemicals Corporation

Ivoclar Vivadent Ag

Basell Polyolefine Gmbh

Dentsply International Inc.

Dentsply Gmbh

Dentsply Detrey G.m.b.h.

Rhone-poulenc Rhodia Aktiengesellschaft

Albert-ludwias-universität Freiburo

Faurecia Interieur Industrie

Faurecia Sieges D'automobile

Flex-n-gate France

Rolf Mulhaupt

Hubert Simon

Werner Rufenacht

Joachim E Klee

Giovanni Parrinello

Martin Weber

Mario Slongo

Siegfried Hopperdietzel

Dieter Strasilla

Ekkehard Weinberg

Dirk Holter

Philipp Muller

Herbert Klein

Joachim Rosch

Holger Frey

Volker Rheinberger

Shahram Mihan

Norbert Moszner

Jean Rody

Alfred Renner

Paul Dubs

Ulrich Salz

Alfred Steinmann

Volker Fraaije

Gerhard Rytz

Heike Gregorius

Bernard Gilg

Andreas Facher

Jacques-Alain Cotting

Jorg Munzenberg

Ursula Kreibich

Horst Lauterbach

Aloysius H Manser

Joachim Schatzle

Marie-Pierre Buron

Armin Burgath

Chritoph Weber

Jorg Kressler

Rudiger Schafer

Fan Zhong

Holger Warth

Martin Schmider

Christopher S Adderley

Jeremy H Powell

Julia Mockel-Weber

Richard Stossel

Christophe Michel

Christian Friedrich

Benjamin Kerscher

Levente Szanto

Klaus Hasis

A nano platelet gibbsite treated with compound of formula (OR)Si&#x2014;Ror of formula R&#x2014;COOH wherein Requal to or different from each other is a C-Calkyl radical; Ris a C-Chydrocarbon radical and Ris a C-Chydrocarbon radical is used as a catalyst support.

Supported catalyst system

One-component heat-curable sealant composition for the protection of exposed dental surfaces, comprising

Laser curable polymerisable composition for the protection of hard tissue

A process for fabricating dental form pieces for dental restoration and replacement parts is provided and includes the step of applying a material, on a firm support or a fluid medium, by a three dimensional plotting technology in a layer by layer manner. The material has micro cords and/or micro drops which include at least one of a meltable, polymerizable, polycondensable, and polyaddable constituent element that is an unfilled monomer, a reinforced monomer, oligomer, polymer, or a ceramic element. The process also includes the step of hardening the applied material by cooling of the material, chemical reaction, polymerization with thermal handling, or polymerization by irradiation of the material with UV or visible light.

Desktop process for producing dental products by means of 3-dimensional plotting

Liquid crystalline (meth)acrylate compounds, composition and method

A thermoplastic molding composition comprises

Thermoplastic molding compositions based on polyesters and polycarbonate

A liquid crystalline compound, a polymeric product formed by polymerization of the liquid crystalline compound, a dental composition including the liquid crystalline compound and method of using the dental composition. Polymerization of the liquid crystalline compound results in an low volume percent shrinkage and a high conversion to polymer. The composition of the invention is useful for dental adhesive, primer, cement, pit and fissure sealant and restorative.

A description is given of compounds of the formula I ##STR1## where r is 0 or 1 and y is a number from the range 1-3; X is a direct bond or --NR.sub.8 --, --CO--, --CONH-- or --COO-- or a divalent aliphatic or mixed aromatic-aliphatic C.sub.1 -C.sub.18 hydrocarbon radical;

Oxazoline compounds as stabilizers

Alkylalkoxysilyl-1,3-oxazolines, their production by reacting 2�-alkenyl!-1,3-oxazolines with alkylalkoxysilanes or cyano alkylene silane compounds with amino alcohols and the use of the compounds for modifying materials with siliceous surfaces.

Alkylalkoxysilyl-1,3-oxazolines, a method of production and use

Polymers (A) containing oxazine groups are prepared by reacting a polymer (T) containing nitrile groups with a monoaminoalcohol in the presence of a catalyst by a process in which the polymer T is reacted in the melt with the monoaminoalcohol in the presence of the catalyst and in the absence of a solvent.

Preparation of polymers containing oxazine groups

A plasticized cellulose acetate is described with a content of a modified cellulose acetate A comprising a grafted oligomer of a cyclic ester, in particular in the form of .epsilon.-caprolactone, which comprises additionally a plasticizing agent in the form of an oligomer B of a cyclic ester, and the terminal carboxyl group of the oligomer is esterified with an alcohol or an alcohol derivative having at least one free hydroxyl group, with a boiling point of at least approximately 120.degree. C. and a melting point of no more than approximately 180.degree. C. and the ratio of weight of component A to B is represented by the formula (I)

Plasticized cellulose acetate, process for its production and its use

A polymer mixture reinforced by an in situ, melt-polymerized microphase whereby the rigidity of the base material is increased, a process for manufacturing same, and use thereof for providing reinforced compositions and articles in which the polymer mixture is prepared by polymerizing a component B in a melt of a component A composed of at least one thermoplastic polymer. Component B is composed of at least one compound having the structure ##STR1## The reaction of component B in a melt of component A results in linear, branched or cross-linked, high or low molecular weight polymers constituting a microphase. Preferably, the microphases have the form of microfibers. In the structure of component B, X is NH.sub.2, NHR.sup.3, OH or an N-substituted, Y-activated lactam of the ##STR2## type which is activated with an electrophilic substituent Y, where Y is CO, SO.sub.2, or R.sup.5 P.dbd.O; R.sup.1, R.sup.2 and R.sup.4 are bivalent or multivalent aliphatic-, aromatic-, heterocyclic- or heteroatom-containing segments, with R.sup.2 and R.sub.4 preferably being bivalent aliphatic or aromatic radicals (CH.sub.2).sub.z in which 1&lt;z&lt;15; R.sup.3 and R.sup.5 are aliphatic, cycloaliphatic or aromatic radicals; and n and m are integers for which 1&lt;m and n&lt;5, and preferably m=n=1.

In situ polymer alloys and microcompounds, process for their

A polymer mixture reinforced by an in situ, melt-polymerized microphase whereby the rigidity of the base material is increased, a process for manufacturing same, and use thereof for providing reinforced compositions and articles in which the polymer mixture is prepared by polymerizing a component B in a melt of a component A composed of at least one thermoplastic polymer. Component B is composed of at least one compound having the structure ##STR1## The reaction of component B in a melt of component A results in linear, branched or cross-linked, high or low molecular weight polymers constituting a microphase. Preferably, the microphases have the form of microfibers. In the structure of component B, X is NH.sub.2, NHR.sup.3, OH or an N-substituted, Y-activated lactam of the ##STR2## type which is activated with an electrophilic substituent Y, where Y is CO, SO.sub.2, or R.sup.5 P=O; R.sup.1, R.sup.2 and R.sup.4 are bivalent or multivalent aliphatic-, aromatic-, heterocyclic- or heteroatom-containing segments, with R.sup.2 and R.sup.4 preferably being bivalent aliphatic or aromatic radicals (CH.sub.2).sub.z in which 1&lt;z&lt;15; R.sup.3 and R.sup.5 are aliphatic, cycloaliphatic or aromatic radicals; and n and m are integers for which 1&lt;m and n&lt;5, and preferably m=n=1.

Process for the manufacture of in situ polymer alloys and

Compositions containing A) a copolymer based on at least one 1,3-diene and at least one polar, ethylenically unsaturated comonomer and B) a phenol-terminated polyurethane, polyurea or polyurea-urethane of the formula I ##STR1## in which m is 1 or 2, n is 2 to 6, R.sup.1 is the n-valent radical of an elastomeric prepolymer which is soluble or dispersible in epoxide resins, X and Y independently of one another are --O-- or --NR.sup.3 --, it being necessary for one of these groups to be --NR.sup.3 --, R.sup.2 is an m+1-valent radical of a polyphenol or aminophenol after the removal of the phenolic hydroxy group(s) or the amino group or both the amino group and the phenolic hydroxyl group, respectively, and R.sup.3 is hydrogen, C.sub.1 -C.sub.6 alkyl or phenyl, are described. Compounds containing the components A) and B) as well as an epoxide resin C) are also described. The cured products are distinguished by a high peel strength and high resistance to crack propagation. The curable compositions can be employed, for example, as structural adhesives.

Phenol-terminated polyurethane or polyurea(urethane) with epoxy resin

Polyolefins and olefin copolymers which are prepared by polymerization on a catalyst made from a magnesium halide, a titanium compound and an aluminium alkyl can be stabilized by the addition of certain sterically hindered triazinylpiperidines, which are substituted in the 1-position, to the polymerization.

Process for the stabilization of polyolefins

The invention relates to compositions containing A) a liquid copolymer based on butadiene and at least one polar, ethylenically unsaturated comonomer, and B) a polyether prepolymer capped with hydroxyarylcarboxylic or hydroxyaralkylcarboxylic acids, or a capped polyester, polythioester or polyamide containing polyether segments. The phenolic hydroxyl group in component B) can also be etherified with epichlorohydrin and this product can be converted to a episulfide, if desired, or the phenolic hydroxyl group can be reacted with cyanogen halide to form a cyanate group. The stock compositions can be used in combination with epoxy resins to manufacture structural adhesives or sealing compounds.

Butadiene/polar comonomer copolymer and aromatic reactive end

Growing community of inventors

Freiburg, Germany

Rolf Mulhaupt