Phosphorus-containing coated magnesium oxide powder, method...

Details Phosphorus-containing coated magnesium oxide powder, method... Phosphorus-containing coated magnesium oxide powder, method...

2008-07-01

2008-07-01

Tarazano, D. Lawrence (Department: 4171)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S200000, C524S436000, C524S417000, C524S414000, C428S403000, C428S404000

Reexamination Certificate

active

07393885

ABSTRACT:
A phosphorus-containing coated magnesium oxide powdered material comprising a coated magnesium oxide powdered material having a surface coating layer comprised of a double oxide, wherein the phosphorus-containing coated magnesium oxide powdered material has a coating layer comprised of a magnesium phosphate compound in at least part of a surface of the coated magnesium oxide powdered material, wherein the content of the magnesium phosphate compound in the coated magnesium oxide powdered material is 0.1 to 10% by mass, in terms of phosphorus; a method for producing a phosphorus-containing coated magnesium oxide powdered material, wherein the method comprises treating a coated magnesium oxide powdered material having a surface coating layer comprised of a double oxide with a phosphorus compound, and then calcining the resultant powdered material at 300° C. or higher to form a magnesium phosphate compound in at least a part of a surface of the coated magnesium oxide powdered material; and a resin composition comprising the powder.

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