Dental gypsum compositions in low-dusting powdery form

Details Dental gypsum compositions in low-dusting powdery form Dental gypsum compositions in low-dusting powdery form

1988-08-18

1990-03-27

Willis, Prince E.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

106 35, 106109, 106110, 106116, 4331991, 433213, 433214, A61C 900, B28B 734, C04B 2400

Patent

active

049117599

ABSTRACT:
A dental gypsum composition in the low-dusting powdery form contains (a) hemihydrate gypsum, (b) a setting controlled agent comprising one or more of setting accelerators, setting retarders and setting expansion inhibitors, (c) one or more wetting agents selected from the group consisting of liquid hydrophobic hydrocarbons, liquid hydrophobic fatty acid esters and liquid hydrophobic fatty acids showing a vapor pressure of 3.15 mmHg or below at 20.degree. C., and (d) one or more anionic surface active agents selected from the group consisting of alkylbenzene sulfonates and alkyl sulfates.

REFERENCES:
patent: 3850870 (1974-11-01), Kanakami et al.
patent: 3947285 (1976-03-01), Jones et al.
patent: 3966479 (1976-06-01), Koblitz
patent: 4268310 (1981-05-01), Nemeth
patent: 4298394 (1981-11-01), Leeming et al.
patent: 4394172 (1983-07-01), Scheuble et al.
patent: 4526619 (1985-07-01), Ohi et al.
patent: 4543372 (1985-09-01), Watanabe et al.
patent: 4670053 (1987-06-01), Kooke et al.

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