FROST RESISTANT RUBBER BASED ON PROPYLENE OXIDE RUBBER AND NATURAL BENTONITES Russian patent published in 2013 - IPC C08L71/02 C08K13/02 C08K3/06 C08K5/09 C08K5/372 C08K5/10 

FIELD: chemistry.

SUBSTANCE: disclosed rubber mixtures can be used to make rubber components used in various types of seal assemblies of machines and mechanisms and in other fields, e.g. for making seals for double-glazed windows in regions with a cold climate. The rubber mixture contains the following, pts.wt: propylene oxide rubber SKPO - 100.0; sulphur - 1.5; stearic acid - 1.0; zinc oxide - 5.0; thiuram disulphide - 1.0; dibenzothiazole disulphide (altax) - 1.5; dibutoxy ethyl adipate - 10.0; technical carbon P-803 - 60.0; phenyl-β-naphthylamine (neozone D) - 2.0; and natural bentonites - 0.5; 1.0; 3.0; 5.0; 10.0.

EFFECT: high frost resistance and low compression set of rubber seals made from the rubber mixture.

2 tbl