Particulate hydroperoxidized poly-n-vinyl lactam, its preparatio

Details Particulate hydroperoxidized poly-n-vinyl lactam, its preparatio Particulate hydroperoxidized poly-n-vinyl lactam, its preparatio

1987-02-17

1988-12-13

Schofer, Joseph L.

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

Synthetic resins

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

525291, 525293, 525296, 525301, 525308, 525309, 525310, C08F27500

Patent

active

047911751

ABSTRACT:
Particulate hydroperoxidized poly-N-vinyl lactam containing an average of about 0.5 to 20 hydroperoxy mole equivalents per mole of poly-N-vinyl lactam, the preparation of the same by subjecting particulate poly-N-vinyl lactam to an effective amount of ozone, and the use thereof in the preparation of graft copolymers possessing a low degree of extractibles, finding utility in a wide number of fields, particularly in biomedical devices, semipermeable membranes, and as films or fibers.

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