Porous polymeric article

Details Porous polymeric article Porous polymeric article

2003-08-11

2009-12-01

McClendon, Sanza L (Department: 1796)

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

C522S113000, C522S114000, C522S121000, C522S127000, C522S133000, C522S157000, C522S158000, C522S027000, C521S030000, C521S032000, C521S033000, C521S031000, C521S038000, C525S267000, C525S291000, C525S298000, C525S301000, C525S302000, C525S307000, C525S308000, C525S305000

Reexamination Certificate

active

07625955

ABSTRACT:
A porous article which is formed from a polymeric material, in which characteristics of the surface of the article provided by the polymeric material are modified by having grafted to it chains of polymerized vinyl monomer units, in which the chains each comprise a number of units of a first vinyl monomer and include a unit of a second vinyl monomer which is different from the first vinyl monomer. Preferably, the ratio of the number of units of the first vinyl monomer in each chain to the number of units of the second vinyl monomer is not more than about 60. When the number of second vinyl monomer units in each chain is one, the mean number of first vinyl monomer units in each chain will be not more than 60.

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