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2 172 747

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Application

99127048/04, 1999-12-27

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Start date

1999-12-27

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Actual filing date

1999-12-27

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Published

2001-08-27

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Inventor

Glukhovskoj V.S.Litvin Ju.A.Sitnikova V.V.Fil' V.G.Mitin I.P.Sviridov S.N.Kretinina E.S.Kulikov E.P.Gusev A.V.Privalov V.A.Rachinskij A.V.Gudkov V.V.Konjushenko V.D.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Institut Sinteticheskogo Kauchuka Im. Akad. S.V. Lebedeva"

METHOD FOR PRODUCTION OF THERMOELASTOLAYERS Russian patent published in 2001 - IPC

Abstract RU 2172747 C1

FIELD: polymer materials. SUBSTANCE: invention relates to block copolymers exhibiting properties of thermoelastolayers and belonging to types A-B-A and (A-B)nX, wherein A denotes polystyrene or poly-alpha-methylstyrene block, B polydiene block, X fragment of coupling agent, n ≥ 2, which find use in footwear industry, industrial rubber production, and for modifying road and roofing bitumens and plastics. In a method for production of thermoelastolayers by block copolymerization of polystyrene or poly-alpha-methylstyrene with diene in organic solvent under influence of organolithium initiator in presence of methyl tert-butyl ether modifier, said organolithium initiator is complex dissoluble in hydrocarbon solvents, which is prepared by interaction of ethyl chloride/n-butyl chloride with dispersion of lithium at molar ratio 1:(0.1-0.25):(2.25- 2.60), respectively, at 55-65 C followed by adding styrene to reaction mixture at styrene-to-active lithium molar ratio (0.1- 1.0):1, concentration of lithium initiator being 4,0•10-5-1,2•10-4 mole of active lithium per 1 g of vinylaromatic monomer. EFFECT: improved characteristics of thermal aging of thermoelastolayers. 3 tbl

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RU 2 172 747 C1

Authors

Glukhovskoj V.S.

Litvin Ju.A.

Sitnikova V.V.

Fil' V.G.

Mitin I.P.

Sviridov S.N.

Kretinina E.S.

Kulikov E.P.

Gusev A.V.

Privalov V.A.

Rachinskij A.V.

Gudkov V.V.

Konjushenko V.D.

Dates

2001-08-27—Published

1999-12-27—Filed

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