摘要:
New halogenated butyl rubbers, which have a defined content of halogen, a defined content of non-halogenated double bonds and a defined content of antiagglomeration/vulcanization control agents, exhibit outstanding mechanical and physiological properties, so that they are suitable for the production of tires, particularly tire inner liners, tire sidewalls and tire treads, and for pharmaceutical rubber articles.
摘要:
Compositions comprising new halogenated butyl rubbers with a defined, low content of halogen, a defined content of non-halogenated double bonds and a defined content of anti-agglomeration/vulcanisation control agents and containing polymer compounds comprising special amidines, mercapto or zinc mercapto compounds and polymers possess outstanding mechanical and physiological properties, so that they are suitable for the production of tyres, particularly tyre inner liners, tyre sidewalls and tyre treads.
摘要:
The invention relates to rubber mixtures which contain microgels and isocyanatosilanes and vulcanisates produced therefrom. By adding isocyanatosilanes the mechanical properties of the vulcanisates, in particular the elongation properties and the abrasion resistance, are improved without the difference in rebound resilience at 70° C. and 23° C. being reduced.
摘要:
The present invention relates to halogenated, low-gel, high molecular weight isoolefin multiolefin copolymers, in particular to halogenated, low-gel, high molecular weight butyl rubbers, and halogenated, low-gel, high molecular weight isoolefin multiolefin copolymers synthesized from isobutene, isoprene and optionally further monomers, with a multiolefin content of greater than 2.5 mol %, a molecular weight Mw of greater than 240 kg/mol and a gel content of less than 1.2 wt. % and a process for their preparation.
摘要:
The invention provides rubber mixtures of at least one double bond-containing rubber, rubber gels and additives of inorganic peroxides and also optionally further fillers and rubber auxiliary substances. Rubber mixtures according to the present invention are characterized in the uncrosslinked state by good processability (compound viscosity ML 1+4/100° C.
摘要:
The invention relates to rubber compounds comprising at least one double bond-containing rubber, additions of rubber gels, phenolic resin adducts or phenol/formaldehyde condensation products, such as resols or novolaks, and optionally, further fillers and rubber auxiliary substances, and the vulcanizates and molded rubber articles produced from them. The rubber compounds according to the present invention are characterized in the uncrosslinked state by good processability (compound viscosity ML 1+4/100° C. 60, high impact resilience values E/23° C.>60% and a low specific density. The vulcanizates are suitable for the production of industrial rubber articles and for various tire components, such as roll coverings, conveyor belt coverings, belts, spinning cops, seals, golf ball cores, shoe soles and bead compounds, tire carcasses, subtread compounds and tire sidewalls. The compounds are particularly suitable for producing reinforced sidewalls for tires with emergency running properties (inserts for run flat tires).
摘要:
The rubber mixtures according to the present invention consisting of uncrosslinked, double bond-containing rubbers (A), crosslinked rubber particles (B) and multifunctional isocyanates based on polyuret (C), wherein, based on 100 parts by weight (phr) of the rubber components (A) respectively, the component (B) content in the mixture is 1 to 150 parts by weight and the multifunctional isocyanate content based on polyuret (component C) is 1 to 100 parts by weight, can be used to produce rubber vulcanizates and rubber molded articles of all kinds, the vulcanizates produced therefrom exhibiting an advantageous combination of mechanical properties, such as modulus at 300% elongation, elongation at break, tear strength and abrasion resistance.
摘要:
The rubber mixtures according to the present invention comprising uncrosslinked butyl rubbers and nitrile-containing rubber gels as well as optionally, conventional additives and auxiliary substances, are suitable for the production of vulcanizates and molded rubber bodies of all kind having low gas permeability, low weight and acceptable mechanical properties, the mixtures exhibiting good processability.