Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2006-04-11
2006-04-11
Egwim, Kelechi C. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C524S548000, C524S570000, C526S332000, C526S333000, C526S348800
Reexamination Certificate
active
07026417
ABSTRACT:
Herein are disclosed modified vinyl alcohol polymers (mPVOH), wherein the mPVOH can comprise structure VII:and at least one structure comprising structure IX:or structure X:wherein —R can independently comprise an unsubstituted hydrocarbon moiety comprising at least one alpha hydrogen or a substituted hydrocarbon moiety comprising at least one alpha hydrogen. The mPVOH can be useful in oxygen barrier applications, such as a forming an oxygen barrier layer of a packaging article. Also disclosed are methods of forming mPVOH and methods of using mPVOH to make packaging articles with a superior barrier to entry by atmospheric oxygen.
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Ching et al., “Tasteless Oxygen Scavenging Polymers: A New Platform Technology for Food Packaging Based On Controlled Oxidation,”Oxygen Absorber . . . 2001 and Beyond, OSP Conference, pp. 1-8 (Chicago, Jun. 19-20, 2000).
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Ching Ta Yen
Yang Hu
Chevron Phillips Chemical Co. LP
Egwim Kelechi C.
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