Chemische Werke Huls Aktiengesellschaft

Huels Aktiengesellschaft

Chemische Werke Huels Aktiengesellschaft

Horst G Haag

Roland Streck

Dieter Zerpner

Karl-Heinz Nordsiek

Wolfgang Kampf

Harald Blumel

A coupling agent for vulcanizable mixtures of rubbers and mineral fillers which is the reaction product of a 2(3)-chloroacetoxy-5-(2'-trialkoxysilyethyl)norbornane of the formula: ##STR1## wherein R.sup.1 is methyl and/or ethyl, with a thiosulfonic acid salt of the formula:

Coupling agents for vulcanizable mixtures of unsaturated rubbers and

Novel adhesion promoters having, on the one hand, groups capable of forming a stable chemical bond with the surface of silicic acids and silicates (siloxane bond) and, on the other hand, groups capable of forming, during vulcanization, a stable chemical bond with an elastomer (sulfur bridges) are provided. They are consequently suitable as adhesion promoters for the production of vulcanizates exhibiting a favorable filler/elastomer bond. They are oligosulfanes of the formula

Adhesion promoters for the production of volcanizates having a favorable

A process for the silylation of unsaturated, naturally occurring oils or the interesterification products thereof, comprises reacting the unsaturated, naturally occurring oils or the interesterification products thereof, at a temperature of 200.degree.-350.degree.C. under inert gas, with silicon compounds of Formula I ##STR1## wherein R is hydrogen or an unsaturated aliphatic hydrocarbon residue of 2-6 carbon atoms,

Process for the silylation of unsaturated, naturally occurring oils or

A homo- or copolymer of a 1,3-diene having reactive silyl groups bound thereto, and containing 0.4-12% by weight of bound silicon, prepared by reacting at a temperature of 150.degree.-300.degree. C., a 1,3-diene homo- or copolymer, having less than 1% of its aliphatic double bonds conjugated and having a molecular weight (M.sub.n) of 400-8,000, with a silicon compound of the formula ##STR1## wherein R is an unsaturated aliphatic hydrocarbon residue of 2-20 carbon atoms,

Homo- and copolymers of 1,3-dienes containing reactive silyl groups, and

A process for producing a shelf-stable ethylene-.alpha.-olefin (diene) elastomer powder which comprises a release agent, comprising grinding crumbs or preliminarily comminuted particles of an ethylene-.alpha.-olefin (diene) elastomer having a green strength of 5-20 MPa and a Mooney viscosity ML (1+4) 100.degree. C. of 50-150, and, prior to, during or after the grinding step, adding 0.5-10 parts by weight per 100 parts by weight of the ethylene-.alpha.-olefin (diene) elastomer, of a release agent which is

Shelf-stable ethylene-.alpha.-olefin (diene) elastomer powders

Polybutadiene oils of 400-6,000 molecular weight, having double bonds which are 10 to 60% vinyl, 1 to 15% transvinylene and 25 to 85% cis-vinylene, and 3-20% by weight, corresponding to 0.4 to 3% by weight of bound silicon, of which are reactive silyl polymer units of the formula ##STR1## wherein X is a hydrolyzable group and Y and Z are the same as X or are H and/or alkyl of 1-8 carbon atoms, cycloalkyl of 5-12 carbon atoms, or optionally substituted phenyl; are useful as adhesion promoters for vulcanizable elastomer compositions comprising a mineral filler.

Polymeric adhesion promoters for vulcanizable mixtures of elastomers and

The properties of elastomeric vulcanizates are improved by compounding an elastomer prior to vulcanization with a polydodecenamer reinforcing resin derived from cyclododecene and cyclododecadiene and vulcanizing the compounded elastomer.

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Marl, Germany

Horst G Haag