Chemische Werke Huls Aktiengesellschaft

Veba-chemie Aktiengesellschaft

Felix Schulde

Johann Obendorf

Volker W Kulisch

Klaus M Diedrich

Gunter Dormann

Kurt Neubold

Karl Peterlein

Fritz Gude

Herbert Haferkorn

A copolymer derived from maleic anhydride and dicyclopentadiene, containing hydroxyl groups, having the formula: ##STR1## wherein R and R' may be the same or different, selected from the group consisting of H, C.sub.1 -C.sub.14 alkyl-isobutyronitrile, phenyl which is optionally substituted by halogen, C.sub.1 -C.sub.8 alkyl-substituted phenyl, C.sub.1 -C.sub.14 alkoxy-, C.sub.1 -C.sub.14 acyloxy- or halogen-substituted benzoyl, and n=3-10. The copolymer is useful for the sizing of paper.

Copolymers containing hydroxyl groups, method of production and their

Terpolymers of maleic anhydride, dicyclopentadiene, and a vinylcyclohexene, preferably 1-vinylcyclohexene-3, are highly effective paper sizing materials.

Copolymer of maleic anhydride, dicyclopentadiene and vinylcyclohexene

An improvement for producing a coating from a powder lacquers composition comprising at least one 1,2-epoxide compound having at least one 1,2-epoxide group in the molecule which compound has a lower melting point greater than 40.degree. C., and dicyandiamide wherein the powder coating lacquer composition additionally contains an imidazoline derivative of the general structure ##STR1## wherein R is hydrogen, an alkyl or aryl residue, R' is a cycloalkyl, heterocyclo alkyl or R, R' is an alkyl or aryl substituted or unsubstituted alkylene or arylene, X is hydrogen or a radical having the following structure ##STR2##

Process of hardening epoxy coating composition with

A paper sizing composition which comprises a mixture of

Paper sizing agents

Paper surface sizing agents based on aqueous solutions ofcopolymers of maleic acid anhydride and dicyclopentadiene, which are further reacted after preparation to produce the half amides with ammonia, or primary or secondary aliphatic amines.

Anionic paper surface sizing agent

A method of producing coatings on the basis of two-component systems composed of 1,2-epoxy compounds having at least one 1,2-epoxy group in the molecule, plus cyclic amidines and the conventional paint additives, which are thermosetting at 100.degree. to 200.degree. C, the said method being characterized in that one uses as cyclic amidines imidazoline or tetrahydropyrimidine derivatives of the general formula ##STR1## IN WHICH N EQUALS 2 OR 3; M EQUALS 1 OR 2; R.sub.1, R.sub.2 and R.sub.3 are identical or different, and represent hydrogen, alkyl, aryl, aralkyl, cycloalkyl, heterocyclics, ether, theoether, halogen, --N(R).sub.2, nitro groups, keto groups, ester groups or carbonamide groups, and R represents alkyl, alkylene, an aryl, aralkyl, cycloalkyl or heterocyclic radical, substituted if desired with halogen, nitro groups, alkyl groups, alkoxy groups or amino groups, and, when m equals 1, represents also hydrogen, a plurality of radicals being able to be joined, also by hetero atoms such as O, N or S, if desired.

Method of preparing coatings

Coatings having a matt finish are made by applying a powder varnish composition to a substrate and thereafter reacting the varnish at a temperature of 100.degree. to 240.degree. C to form the matt finish coating. The powder varnish composition is a finely divided, particulate mixture of

Method for making matt finish coatings

Coatings having a matt finish are made by applying a powder varnish composition to a substrate and thereafter reacting the varnish at a temperature of 100.degree. to 240.degree.C to form the matt finish coating. The powder varnish composition is a finely divided, particulate mixture of

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Wulfen, Germany

Felix Schulde