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(19)

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2 090 533

(13)

(51)

IPC

(21) (22)

Application

93014631/04, 1993-03-22

(22)

Actual filing date

1993-03-22

(45)

Published

1997-09-20

(72)

Inventor

Kozlovskij A.I.Velichko E.G.Rakhmanov V.A.Kozlovskij R.A.

(73)

Holder

Vserossijskij Federal'Nyj Nauchno-Issledovatel'Skij I Proektno-Konstruktorskij Tekhnologicheskij Institut Stroitel'Noj Industrii

GYPSUM MIX Russian patent published in 1997 - IPC

Abstract RU 2090533 C1

FIELD: construction, manufacture of gypsum mixes. SUBSTANCE: gypsum mix comprises, wt. -%: semiaqueous gypsum, 47-52; additive from alkaline sewage resulting from caprolactam production based on dicarboxylic acids, 0.2-0.8; polydentant chelatin-forming ligand, 0.03-0.15; 0.05-0.1 trisodium phosphate, 0.05-0.1; and water, the balance. Products manufactured from gypsum mix form no salted-out areas and color stains. Desired setting time and strength characteristics of no greater than 10.7 MPa are retained. EFFECT: improved properties.

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RU 2 090 533 C1

Authors

Kozlovskij A.I.

Velichko E.G.

Rakhmanov V.A.

Kozlovskij R.A.

Dates

1997-09-20—Published

1993-03-22—Filed