Poly(vinylphosphonic acid) glass ionomer cement

Details Poly(vinylphosphonic acid) glass ionomer cement Poly(vinylphosphonic acid) glass ionomer cement

1990-10-26

1993-01-12

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524130, 524430, 524433, 524492, 524493, 524494, A61K 6087, C08K 55317, C08K 322, C08K 340

Patent

active

051791358

ABSTRACT:
A glass ionomer cement composition comprises poly(vinyl phosphonic acid) dissolved in its own mass of water; and (in treble the total mass of the solution) a powder, being glass or MgO or a cement. The powder has to be deactivated so that the setting reaction with the acid is not too fast, and this is achieved either by a raised Si:Al ratio or by heat-treating. The glass contains heavy ions such as La, Ba or Sr.

REFERENCES:
patent: 3748156 (1973-07-01), Moore, Jr.
patent: 4647600 (1987-03-01), Kawahara et al.
patent: 4652593 (1987-03-01), Kawahara et al.
Research Disclosure No. 126, Oct. 1974, "A New Dental Restorative Material . . . " pp. 50-51.
Chemical Abstracts, vol. 93, No. 12, Sep. 1980, p. 345, Abstract No. 120375t, Columbus, Ohio, Crisp et al.
Abstract for JP 57126407.

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