Method for producing polylaurolactam powder compositions for the

Details Method for producing polylaurolactam powder compositions for the Method for producing polylaurolactam powder compositions for the

1979-11-21

1981-06-16

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528326, 528480, 528481, 528496, 528502, 260 37N, C08G 6914, C08G 6916, C08G 6946

Patent

active

042739195

ABSTRACT:
A process for preparing coating powders based on polylaurolactam for the vitrification coating process beginning with polylaurolactam granulates obtained by polymerizing laurolactam under internal pressure in the presence of 2 to 10% by wt. of water and 0.3 to 0.7% by wt. of phosphoric acid at temperatures between 265.degree. and 300.degree. C., in the absence of chain stabilizers, and which have a relative viscosity of between 1.50 and 1.80. After precooling to temperatures between -50.degree. and 0.degree. C., the granulates are ground and then graded. Extraction with methanol or ethanol is carried out prior to grinding or grading. Pigments are added to the monomerous laurolactam or to the polylaurolactam in the molten state prior to granulation. The powders are especially well suited to manufacture colored powders by the dry-blend process.

REFERENCES:
patent: 3564599 (1971-02-01), Schaaf et al.
patent: 4143025 (1979-03-01), Feldmann et al.

Affiliated with

Also associated with

Rating

Method for producing polylaurolactam powder compositions for the does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing polylaurolactam powder compositions for the, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing polylaurolactam powder compositions for the will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-156212