Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2007-04-17
2007-04-17
Pezzuto, Helen L. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C524S555000, C524S567000, C525S331900, C525S344000, C526S336000
Reexamination Certificate
active
10639105
ABSTRACT:
The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-soluble cationic polymers.
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Ciba Specialty Chemicals Water Treatments Ltd.
Loggins Shiela A.
Pezzuto Helen L.
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