Coated particulate fillers comprises a phosphinic acid group-con

Details Coated particulate fillers comprises a phosphinic acid group-con Coated particulate fillers comprises a phosphinic acid group-con

1983-11-15

1985-01-29

Lilling, Herbert J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

428402, 428403, 428404, 428407, 523209, C08K 900, B32B 516

Patent

active

044966709

ABSTRACT:
Filler particles are coated with an adduct of an unsaturated polymer, e.g. polybutadiene, and phosphinic acid groups. The coated filler may be prepared by reacting an unsaturated organic polymer with a phosphorus trihalide and applying the product in the form of a solution or dispersion in an organic solvent to mineral, e.g. calcium carbonate, particles. If liquid, the product may alternatively be applied as such to the mineral particles. In either case, the product so applied is then hydrolyzed in situ in order to form the phosphinic acid groups. The coated filler particles are useful in the reinforcement of elastomers.

REFERENCES:
patent: 3966486 (1976-06-01), King et al.
patent: 4017452 (1977-04-01), Schwarz
patent: 4123587 (1978-10-01), Wesch et al.
patent: 4209430 (1980-06-01), Weber
patent: 4251432 (1981-02-01), Martin
patent: 4251436 (1981-02-01), Silberberg
patent: 4317765 (1982-03-01), Gaylord
Derwent Abs. 80398c/45 (3-1980) SU724537.
Chem. Abs. 83-29296(a) Kurbanov et al. (1973).
Chem. Abs. 87-40465(h) Shagov et al. (1977).

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