Use of dimethylphosphinylalkanephosphonic acid as a setting reta

Details Use of dimethylphosphinylalkanephosphonic acid as a setting reta Use of dimethylphosphinylalkanephosphonic acid as a setting reta

1982-02-23

1983-08-30

Straub, Gary P.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

106111, 106315, 423265, 423555, C04B 1100, C04B 1114, C01F 1146

Patent

active

044014732

ABSTRACT:
The invention relates to dimethylphosphinylalkanephosphonic acids of the general formula I, in which n is 1 or 2, which are used as setting retarders for gypsum. ##STR1##

REFERENCES:
patent: 3646133 (1972-02-01), Kerst
patent: 3925456 (1975-12-01), Ploger et al.
patent: 3941772 (1976-03-01), Ploger et al.
patent: 3960888 (1976-06-01), Ploger et al.
patent: 4225361 (1980-09-01), Joseph
patent: 4260422 (1981-04-01), Thamm et al.
Maier, L., Preparation & Properties of Bis(Phosphonylmethyl)Phosphinates and Bis(Dihydroxylphosphonylmethyl)Phosphinic Acid, Angew. Chem. International Edit., vol. 7, 1968, #5, pp. 384-385.
Maier, L., Preparation and Properties of Tris(Phosphonylmethyl) Phosphine Oxides and the Corresponding Acids, Angew. Chem. Internat. Edit., vol. 7, 1968, #5, pp. 385-386.
Kabachnik et al., Synthesis and Properties of Some Ethylene Diphosphoryl Compounds Investiya Akademil Nauk USSR, #10, pp. 2290-2295, Oct. 1974 (Translation).

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