Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2011-08-02
2011-08-02
Harlan, Robert D. (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C525S330200
Reexamination Certificate
active
07989545
ABSTRACT:
A solution with a salt-sensitive polymer binder for use in fibrous webs, where the binder contains a copolymer of carboxylic acid monomer units and ethylenically unsaturated monomer units. The binder solution is prepared by emulsion-polymerizing a copolymer and then neutralizing the copolymer with base to make it water soluble. The binders provide a higher wet strength in concentrated salt solutions than in deionized water, and are particularly suitable for strengthening nonwoven fibrous webs in disposable articles such as wet-wipes, personal care products, diapers, and the like.
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International Preliminary Report on Patentability; and Amendment and Response to Written Opinion of the International Searching Authority Under PCT Article 34 and PCT Rule 66.
Farwaha Rajeev
Mumick Pavneet S.
Pauls, Sr. Steven P.
Walker James L.
Celanese International Corporations
Ferrell Michael W.
Harlan Robert D.
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