Asbestiform crystalline calcium sodium or lithium phosphate, pre

Details Asbestiform crystalline calcium sodium or lithium phosphate, pre Asbestiform crystalline calcium sodium or lithium phosphate, pre

1980-11-24

1982-08-24

Thomas, Earl C.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

106193J, 423306, 423314, 523451, 523506, 524706, C01B 2530

Patent

active

043460283

ABSTRACT:
Asbestiform crystalline calcium M phosphate, where M is sodium or lithium, having a length to average diameter ratio of at least 5:1, can be prepared by forming a melt of a source of oxygen, calcium, phosphorus and M having a mole ratio of about 15 percent to about 30 percent M.sub.2 O, about 48 percent to about 60 percent P.sub.2 O.sub.5 and about 20 percent to about 37 percent CaO, cooling the melt within the range of about 500.degree. C. to about 750.degree. C. for a sufficient time to permit blocks of calcium M phosphate to form, and fiberizing the blocks into the asbestiform crystals. Such asbestiform crystalline calcium M phosphates are useful to prepare composites of organic polymeric materials.

REFERENCES:
patent: 2280848 (1942-04-01), Pole

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