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2 111 047

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C1

(51)

IPC

(21) (22)

Application

96122351/25, 1996-11-22

(22)

Actual filing date

1996-11-22

(45)

Published

1998-05-20

(72)

Inventor

Makhmutov F.A.Kozlova E.V.Vasil'Eva I.M.

(73)

Holder

Makhmutov Fanil' Akhatovich

POROUS MEMBRANE WITH REDUCED VAPOR PERMEABILITY Russian patent published in 1998 - IPC

Abstract RU 2111047 C1

FIELD: polymer membrane. SUBSTANCE: invention provides semipermeable porous asymmetric membrane consisting of vinylidene fluoride- tetrafluoroethylene copolymer with 8 to 70 wt. -% of the latter. Pore size of the membrane is 0.0015-0.030 mcm and volume porosity 35-60%. EFFECT: achieved desired characteristics of material. 3 cl, 2 tbl

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RU 2 111 047 C1

Authors

Makhmutov F.A.

Kozlova E.V.

Vasil'Eva I.M.

Dates

1998-05-20—Published

1996-11-22—Filed

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