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2 082 689

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C1

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IPC

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Application

93014632/04, 1993-03-22

(22)

Actual filing date

1993-03-22

(45)

Published

1997-06-27

(72)

Inventor

Kozlovskij A.I.Rakhmanov V.A.Kozlovskij R.A.Sviridov D.S.

(73)

Holder

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

COMPLEX ADDITIVE FOR GYPSUM BINDER Russian patent published in 1997 - IPC

Abstract RU 2082689 C1

FIELD: building materials production. SUBSTANCE: additive comprises, mas. %: alkali wastes of caprolactam production (benzene used as origin material), 50-80; aqueous layer (wastes of caprolactam production), 15-30 which comprises mono- and dicarboxylic acids; trisodium phosphate, 5-20. Strength of gypsum stone is up to 41.1 MPa, its resistance to cold is up to 29 cycles. EFFECT: improved quality. 1 tbl

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RU 2 082 689 C1

Authors

Kozlovskij A.I.

Rakhmanov V.A.

Kozlovskij R.A.

Sviridov D.S.

Dates

1997-06-27—Published

1993-03-22—Filed

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