Plaster consistency reducer

Details Plaster consistency reducer Plaster consistency reducer

1979-06-18

1980-12-02

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From aldehyde or derivative thereof as reactant

106 90, 106285, 260 292R, 260505N, 528247, 528265, C08G 600, C08G 1004

Patent

active

042372607

ABSTRACT:
An additive for reducing the amount of water necessary in forming a pourable aqueous calcined gypsum slurry, the additive comprising a high potassium salt of a condensation product of naphthalene and sulfonic acid having a molecular weight between about 300 and 3,000. Aqueous plaster slurries containing the additive are pourable, moldable and castable with much less excess water than ordinarily required, resulting in dried cast products of increased strength and other physical property benefits.

REFERENCES:
patent: 3277162 (1966-10-01), Johnson
patent: 3465825 (1969-09-01), Hook et al.
patent: 3582376 (1971-06-01), Ames
patent: 3686133 (1972-08-01), Hattori et al.
patent: 3847635 (1974-11-01), Lange et al.
patent: 4028125 (1977-06-01), Martin
patent: 4125410 (1978-11-01), Natsuume

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