Microwave treatment of polymer

Details Microwave treatment of polymer Microwave treatment of polymer

1990-08-10

1993-03-16

Lipman, Bernard

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

Synthetic resins

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

5253337, 525420, C08F 800

Patent

active

051945142

ABSTRACT:
A process for increasing the molecular weight of a polymer, comprising subjecting said polymer to electromagnetic radiation in the presence of a paramagnetic metallic catalyst for a sufficient period of time to significantly increase the molecular weight of the polymer, said polymer being either in solution or in a molten state and said radiation having a frequency in the range of about 0.9 to 10 GHz. The preferred paramagnetic catalysts are metallic nickel, iron or cobalt. The preferred polymers are polyamides and polyolefins.

REFERENCES:
patent: 4069184 (1978-01-01), Ferraro et al.
patent: 4963627 (1990-10-01), Smyser et al.

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