Basf Aktiengesellschaft

Hans-Joachim Krause

Klaus Bronstert

Harro Petersen

Rainer Hummerich

Wolfram Weiss

Kurt Fischer

Johann Nickl

Karl-Clemens Peters

Adolph Segnitz

Georg Bobar

Guenther Immel

Werner Schmitt

Herbert Hahn

Horst Zaunbrecher

Gernot Leib

Vinyl chloride copolymers of (a) from 60 to 78 parts by weight of vinyl chloride, (b) from 1 to 20 parts by weight of glycidyl methacrylate and (c) from 12 to 40 parts by weight of compounds copolymerizable with (a) and (b) have viscosity values, measured in 20% strength by weight toluene solution at 23.degree. C., of from 10 to 100 mPa.s.

Vinyl chloride copolymers

Isobutylene polymers are prepared continuously, in aliphatic C.sub.3 -C.sub.6 -hydrocarbons in the presence of soluble cationic polymerization initiators and coinitiators at from -40.degree. to 40.degree. C. and under from 0.01 to 10 bar, and the solvents and monomers vaporized during the polymerization are recycled, by a process in which the liquid stream of the monomer solution, containing 40-95, in particular 50-85, percent by weight of the monomers, the liquid streams of the recycle and of the coinitiator solution and the separate stream of the initiator solution are combined in a first zone containing the polymerization zone, and the resulting polymer solution is taken off continuously through a second zone vertically below the first zone. The liquid streams of the monomer solution, the coinitiator solution and the recycle can furthermore be fed into the first zone separately from one another.

Continuous preparation of isobutylene polymers

A process for the preparation of etherified or non-etherified aminoplast resins, wherein an aminotriazine of the general formula (I) ##STR1## where X is hydrogen, alkyl, phenyl, alkylphenyl or --NH.sub.2, is reacted with a .beta.-hydroxyaldehyde of the general formula (II) ##STR2## where R', R' and R'' are identical or different and each is hydrogen or alkyl, or R' and R'', together with the .alpha.-carbon atom, are a cyclopentane or cyclohexane ring, and R' and/or R'' can be hydroxyalkyl and R' can be phenyl, the reaction being carried out in the presence of not less than one alcohol and an acid catalyst for the preparation of etherified aminoplast resins and in the presence or absence of an acid catalyst for the preparation of non-etherified aminoplast resins. The aminoplast resins prepared according to the invention can be used as surface-coatings raw materials.

Preparation of aminoplast resins

Co-condensates are prepared by condensing from 0.8 to 2.0 moles of butyraldehyde with 1 mole of a phenol at from 80.degree. to 220.degree. C. with the addition, before, during or after the condensation, of from 5 to 50% by weight, based on the mixture of phenol and butyraldehyde, of one or more thermoplastics containing functional groups, which reacts with phenol, butyraldehyde or the phenol-butyraldehyde resin under the condensation conditions. The co-condensates are used as hot-melt adhesives and as binders for nonwovens.

Co-condensates based on phenol-butyraldehyde resins, their preparation

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Ludwigshafen, Germany

Hans-Joachim Krause