Process for preparing polyamide based, titanium dioxide pigmente

Details Process for preparing polyamide based, titanium dioxide pigmente Process for preparing polyamide based, titanium dioxide pigmente

1986-03-18

1987-08-25

Anderson, Harold D.

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...

523303, 524606, 524847, 524879, 528496, C08G 6946

Patent

active

046893644

ABSTRACT:
An improved process for preparing pulverulent coating compositions pigmented with titanium dioxide and based on polyamides having at least ten aliphatically bound carbon atoms per carbonamide group using the precipitation method. The titanium dioxide pigments used are without nucleating effects or only have weak nucleating effects on the polyamide precipitation. The pigments have nucleating effects less than or equal to 3.degree. C. where .DELTA.T=(T.sub.max p)-(T.sub.o). T.sub.max p is the maximum temperature at which precipitation takes place in a solution of polyamide having pigment therein and T.sub.o is the maximum temperature at which precipitation takes place in polyamide solution having no pigment therein.

REFERENCES:
patent: 4334056 (1982-06-01), Meyer et al.

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