Chemistry of carbon compounds – Dipeptides – e.g. – aspartame – anserine – carnosine – etc.
Patent
1975-04-03
1976-07-13
Seccuro, Carman J.
Chemistry of carbon compounds
Dipeptides, e.g., aspartame, anserine, carnosine, etc.
526255, C08L 2718, C08L 2720
Patent
active
039694356
ABSTRACT:
It is known to heat treat melt-processible blends of copolymers of tetrafluoroethylene and hexafluoropropylene in the molten state at elevated temperatures for several hours in the presence of an atmosphere containing water vapor in order to remove volatile material from the copolymer and to improve the thermal stability of the copolymer. Such heating results in foaming of the molten copolymer which is undesirable. According to the process of this invention, the foaming can be reduced by employing a blend of two or more of the copolymers, at least one of which has a melt viscosity higher, and at least one of which has a melt viscosity lower, than the final desired viscosity of the treated blend.
REFERENCES:
patent: 2946763 (1960-07-01), Bro et al.
patent: 3085083 (1963-04-01), Schreyer et al.
Bailey Charles Eugene
Roura Miguel Jacinto
E. I. Du Pont de Nemours and Company
Seccuro Carman J.
LandOfFree
Process for finishing tetrafluoroethylene-hexafluoropropylene co 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 finishing tetrafluoroethylene-hexafluoropropylene co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for finishing tetrafluoroethylene-hexafluoropropylene co will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1739849