Process for increasing the relative viscosity of polycaprolactam

Details Process for increasing the relative viscosity of polycaprolactam Process for increasing the relative viscosity of polycaprolactam

1982-12-27

1984-02-21

Anderson, Harold D.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

524147, 524149, 524151, 525419, C08G 6948

Patent

active

044331169

ABSTRACT:
A process for rapidly and substantially decreasing the melt index and increasing the viscosity of polymers of caprolactams during melt processing by forming a molten mixture of the polymer and a phosphite compound and heating the mixture until the desired change in melt index and viscosity are obtained.

REFERENCES:
patent: 2493597 (1950-01-01), Rothrock et al.
patent: 3551548 (1970-12-01), Brignac et al.
patent: 3763113 (1973-10-01), Burrows et al.

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