Dynamit Nobel Aktiengesellschaft

Robert Buning

Horst Hanisch

Karl-Martin Rodder

Hansjurgen Hass

Gerhard Bier

Werner Trautvetter

Wolfgang Pungs

Bernhard Piotrowski

Egon Lang

Franz Blaschke

Kurt Huhn

Hans-Jurgen Hass

Wolfgang Looman

Rudolf Rasche

Egon Bierwirth

Bernhard Janser

Disclosed is a method of making fibrids from thermoplastics synthetics and copolymers thereof by expanding by vaporization, in the presence of a gaseous propellant, a polymer solution under elevated pressure and elevated temperature in a mixing nozzle under shear inducing conditions wherein the true or apparent solution of the polymer in solvent is expanded by the use of superheated steam having an average energy density of at least 50 watt-seconds per cubic centimeter in the mixing nozzle.

Method of making fibrids from thermoplastics

A graft polymer of polyvinylidene fluoride wherein the polyvinylidene fluoride has grafted thereon a polymer of an ethylenically unsaturated compound and a process for preparing such graft polymer by contacting polyvinylidene fluoride with a monomer of an ethylenically unsaturated compound in the presence of a radical forming catalyst while the polyvinylidene fluoride is maintained in the solid phase under conditions for polymerization of the ethylenically unsaturated compound.

Method for the modification of polyvinylidene fluoride

Aqueous filler suspension composed of inorganic oxide material and a dispersing agent, characterized in that it contains as dispersing agent an aqueous solution of maleic acid-vinyl alkoxysilane copolymer.

Aqueous suspension of inorganic oxidic material

An aqueous solution of a mixture of silicon-organic compounds comprising:

Aqueous solution of mixtures of silicon-organic compounds

A process for coating an inorganic silicatic substrate is described wherein the substrate is contacted with a copolymer of vinylacetate and a vinylalkoxysilane followed by water removal.

Process for coating an inorganic silicatic substrate

An aqueous solution of a mixture of silicon-organic compounds comprising: A. A silane of the general formula: ##STR1## wherein a is 1 or 2, b is 0, 1 or 2, and a +b is equal to or less than 3, p is 0 or 1, and R represents an alkylene moiety of 1 to 8 carbon atoms or arylene moiety, R' represents an alkyl moiety, X represents a hydrolizable moiety and Y represents a functional group or the CH.sub.3 or the CH.sub.2 .dbd.CH moiety, and B. A copolymer having the recurrent unit of the general formula: ##STR2## wherein R' represents OH and/or [O].sup.- [NH.sub.4 ].sup.+ and/or [O].sup.- [Me].sup.+ where Me is an alkali or alkaline earth metal and Z can represent a moiety of the formula: ##STR3## wherein R'' represents an alkyl moiety. Also disclosed are new copolymers having the recurrent unit ##STR4## wherein at least one of the Z moieties is a moiety having the formula ##STR5## wherein R'' represents an alkyl moiety. Also disclosed are the use of the aqueous solutions as coating agents for metals, inorganic oxidic and inorganic sulfidic materials. There is also disclosed the use of such aqueous solutions of silicon organic compounds as adhesivizing agents especially for securing inorganic oxidic materials to polymers.

Polyvinyl chloride of high impact strength prepared on the basis of

An improved process for grafting vinyl chloride onto ethylene-vinyl acetate or ethylene-alkyl acrylate copolymers in the gel phase in the presence of radical formers soluble in the monomer wherein the ethylene-vinyl acetate or ethylene-alkyl acrylate copolymer is in powder form and a combination of at least two initiators having different decomposition temperatures are employed during the grafting, the resultant grafted copolymer and the use of the same as an impact strength improving component or polyvinyl chloride or vinyl chloride copolymers.

Method of grafting vinyl chloride onto ethylene-vinyl acetate and

A polymer of vinylacetate and a vinylalkoxysilane wherein the alkoxy groups of said vinylalkoxysilane are in a saponified form and the acetyl groups of said vinylacetate are at least partially saponified, the vinyl silane radicals of said copolymer having the formula ##STR1## WHEREIN R is hydrogen, aryl, cycloalkyl or a branched or unbranched saturated alkyl of 1 to 18 carbon atoms;

Hydrolyzed vinyl acetate-vinyl alkoxy silane polymers

A copolymer of vinyl chloride with ethylene or propylene having a K-value of 45 to 65 and an alkylene (ethylene or propylene) content of 0.5 to 10 weight percent. This product is particularly useful for forming plasticizer-free coatings on substrates by known fluidized bed coating processes and for forming plastizer-free shaped articles by rotational molding processes.

Growing community of inventors

Troisdorf-Sieglar, Germany

Robert Buning