Basf Aktiengesellschaft

Basf Se Corporation

Erhard Guenther

Wolfgang Reuther

Dagmar Pascale Kunsmann-Keitel

Edouard Loisel

Rainer Dyllick-Brenzinger

Heinz Berbner

Hans D Zettler

Primoz Lorencak

Gerhard Wolf

Tilman Sirch

Radwan Abdallah

Giovanni D'Andola

Johann Bonn

Manfred Dimmler

Günther Glas

Georg Igl

Hans Etling

Andre Fuchs

Giovanni Dandola

Uwe Kirchgassner

Thomas Gr&ouml;sser

Adolf St&uuml;binger

J&uuml;rgen Werner

Dagmar Pascale Kunsmann-keitel

The present invention relates to photocurable compositions, comprising (A1) a N-vinyloxazolidinone of formula (I), wherein R, R, Rand Rare independently of each other a hydrogen atom or an organic group having not more than 10 carbon atoms, (A2) optionally one, or more second reactive diluents, (B) one, or more oligomers, and (C) a photoinitiator (C), wherein the amount of component (A1) is 5 to 70% by weight based on the amount of components (A1), (A2) and (B), wherein the viscosity of said photocurable composition is in the range 10 to 3000 mPa·s, preferably 10 to 1500 mPa·s at 30° C. The compositions, from which cured three-dimensional shaped articles having balanced mechanical properties combining stiffness with high toughness can be made, are particularly suitable for the production of three-dimensional articles by stereolithography and photopolymer jetting.

UV curable composition for use in 3D printing

Use of a radiation curable composition as printing ink for ink-jet printing, wherein the radiation curable composition comprises N-vinyloxazolidinone of formula (I) in which Rto Rindependently from each other are a hydrogen atom or an organic radical having not more than 10 carbon atoms.

Ink-jet printing ink comprising N-vinyloxazolidinone

Antifoams and/or deaeraters based on oil-in-water dispersions contain, in the hydrophobic oil phase, 3-thiaalkan-1-ols, 3-thiaoxoalkan-1-ols, 3-thiadioxoalkan-1-ols, esters of said compounds or mixtures thereof as compounds having an antifoam and/or deaerating effect, and 3-thiaalkan-1-ols, 3-thiaoxoalkan-1-ols, 3-thiadioxoalkan-1-ols, esters of said compounds or mixtures thereof are used as antifoams and/or deaeraters.

Defoamer and/or deareator on the basis of oil-in-water dispersions

The invention relates to a continuous process for preparing aminoplastics and/or phenolics, in which a precondensate solution is prepared in a first extruder ( ), the precondensate solution is continuously fed, with addition of additives, to a second extruder ( ) with partial filling in the feed section (E) and devolatilization section (G), devolatilized in the second extruder ( ) and then formed to give a molding composition or an end product. The process is particularly suitable for preparing melamine resins, in particular melamine-formaldehyde resins, as well as for preparing urea-formaldehyde resins.

Continuous method for producing amino- and/or phenoplasts

A composition containing (A) one or more aromatic sulfonates, (B) one or more aldehyde resins and (C) a buffer and is prepared and used for treating, in particular neutralizing, leather tanned with mineral compounds or mineral-free compounds.

Composition for treating tanned leather, and its preparation

Condensation products based on triazines and formaldehyde

Fire protection covers made of melamine-formaldehyde resin fibers

Modified melamine-formaldehyde resins

Preparation of colored melamine-formaldehyde condensation products

A process for the preparation hydroxyoxaalkylmelamines of the general formula I ##STR1## in which R.sup.1 denotes a residue of the general formula II ##STR2## in which the radicals R' can be the same or different and stand for hydrogen or C.sub.1 -C.sub.4 alkyl and n denotes 2 or 3 and the radicals R.sup.2 and R.sup.3 stand for one of the radicals R.sup.1 or hydrogen, by the reaction of melamine with a compound of the general formula III ##STR3## in which R' and n have the meanings stated above, at a temperature of from 120.degree. to 250.degree. C. and in the presence of an acid catalyst, in which the acid catalyst is used in a concentration of from 0.01 to 0.15 mol and preferably from 0.02 to 0.12 mol and more preferably from 0.03 to 0.1 mol, based on 1 mol of melamine.

Preparation of hydroxyoxaalkylmelamines

Water-insoluble condensation products, obtained by the condensation of a mixture containing as essential components

Water-insoluble melamine-formaldehyde resins

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Hassloch, Germany

Erhard Guenther