Process for preparing polyamide-based, post- condensing...

Details Process for preparing polyamide-based, post- condensing... Process for preparing polyamide-based, post- condensing...

C - Chemistry, Metallurgy

08

J

402/245

C08J 3/12 (2006.01) C08J 3/14 (2006.01) C08L 77/00 (2006.01)

Patent

CA 1248686

ABSTRACT OF THE DISCLOSURE High molecular weight polyamides with at least ten aliphatically bound carbon atoms per carbonamide group, suitable for the melt-film coating method involving post-condensation, are prepared by a precipitation procedure. The starting material is uncontrolled polyamides with a relative viscosity of between 1.7 and 2.0 (measured in 0.5% m-cresol solution at 25°C), containing from 0 to 0.2% by weight of phosphoric acid. A hot ethanol solu- tion of the polyamide is cooled. At any time after the solution is cooled to the saturation limit temperature, from 0.3 to 1.2% by weight of phosphoric acid based on the polyamide is added to the solution or the suspension.

504768

Affiliated with

Also associated with

Rating

Process for preparing polyamide-based, post- condensing... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing polyamide-based, post- condensing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing polyamide-based, post- condensing... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1290815