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1 617 925

(13)

A1

(51)

IPC

(21) (22)

Application

4332703/05, 1987-09-07

(22)

Actual filing date

1987-09-07

(45)

Published

1994-07-30

(72)

Inventor

Nepyshnevskij V.M.Mosharova O.Ja.Samigullin F.K.Zhitinkin A.A.Gladkovskij G.A.Ushakova L.V.

METHOD FOR PREPARING ANION POLYURETHANE DISPERSION Russian patent published in 1994 - IPC

Abstract SU 1617925 A1

FIELD: chemistry, in particular, synthesis of anion urethane dispersions which can be employed in processing leather, impregnating fabrics and manufacturing coatings and adhesives that may find applications in various spheres of industry. SUBSTANCE: this invention allows scaling up percentage of dispersion dry residue up to 60 % and reducing its viscosity to 270 cP due to use of product resulting from reacting 1 mole of oxyalkylated xylitol having molecular mass of 670 to 1104 with 1 to 3 moles of maleic anhydride as chain elongator neutralized by triethylamine. EFFECT: higher yield of dry residue and storageability and lower viscosity. 2 tbl

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SU 1 617 925 A1

Authors

Nepyshnevskij V.M.

Mosharova O.Ja.

Samigullin F.K.

Zhitinkin A.A.

Gladkovskij G.A.

Ushakova L.V.

Dates

1994-07-30—Published

1987-09-07—Filed

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