Accelerator for gypsum plaster and process of manufacture

Details Accelerator for gypsum plaster and process of manufacture Accelerator for gypsum plaster and process of manufacture

1985-09-27

1987-07-21

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Plaster board making

106114, 428703, B32B 3106, B32B 1300

Patent

active

046816445

ABSTRACT:
A setting accelerator for calcined gypsum plaster and a process for its preparation are disclosed. The accelerator comprises finely ground calcium sulfate dihydrate having composite coatings on the particles of firstly a calcination inhibiting material such as sugar and secondly a coating of aluminum sulfate hydrate. The accelerator is particularly useful in the formation of gypsum wallboard.

REFERENCES:
patent: 3813312 (1974-05-01), Kinkade et al.

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