THERMOPLASTIC ELASTOMERIC MATERIAL Russian patent published in 2008 - IPC C08L21/00 C08L23/06 C08L23/12 C08L53/02 C08K13/02 

FIELD: chemistry.

SUBSTANCE: invention refers to rubber-processing industry, in particular to development of thermoplastic elastomeric rubber materials that can be used for manufacturing of various extrusion profiles and moulded flexible parts for automotive, cable, light industry and construction engineering. Thermoplastic elastomeric material is made of composition including, wt. fraction: rubber - 100, polyolefin - 2-150, vulcanising agent 1-15, vulcanisation activator 3-10, stearic acid - 0.75-2.0, oil - 25-500 and bulk additive - 1-100, modified diene-containing thermoplastic elastomer, such as hydrooxylated, halogenated, hydrogenated or hydrohalogenated dienevinylaromatic thermoplastic elastomer - 5-150, release agent - zinc stearate, calcium stearate or their mixture - 0.1-2.0. As oil additive the material contains paraffine-naphthene oils, as bulk additive is contains powder filler with particle size 100 nanometers to 20 microns, selected from the group: schungite, kaolin, chalk, talcum powder or carbon white, as well as mixed mineral additive with 0.04-4.0 mass % of industrial carbon. Thus as rubber thermoplastic elastomeric material contains ethylene-propylene-diene rubber with propylene chains 27 to 40 mass %, and as the third comonomer is contains ethylidene norbornene or dicyclopentadiene in amount 2-10 mass %, as well as butyl rubber, chlorbutyl rubber, brominated butyl rubber, polyisoprene rubber, butadiene-styrene rubber, or polybutadiene rubber. As polyolefin it contains isotactic polypropylene, polyethylene or their mixture at ratio of polyethylene mixed with isotactic polypropylene in amount of 5-95 mass %.

EFFECT: production of material possessing high technological and physical-mechanical properties, melt processability to products without vulcanisation by moulding under pressure or extrusion, low density, high fullness by oil.

5 cl, 2 tbl