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
2005-11-15
2005-11-15
Yoon, Tae H. (Department: 1714)
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...
C524S368000, C524S800000, C524S801000, C524S831000, C524S833000
Reexamination Certificate
active
06964991
ABSTRACT:
Pressure sensitive adhesive compositions having enhanced resistance to water-whitening comprising an aqueous emulsion polymer are disclosed. The polymer comprises the polymerization reaction product of a polymerizable aqueous emulsion comprising: (i) a hydrophobic monomer mixture of at least one alkyl acrylate or alkyl methacrylate ester of an alcohol wherein the alkyl portion of the alcohol is linear or branched and contains at least 4 carbon atoms, and at least one styrenic monomer, wherein the styrenic monomer is up to about 30 wt. % of the total hydrophobic monomer mixture, (ii) at least about 1 wt. % of at least one hydrophilic monomer, (iii) at least about 5 wt. % of at least one partially hydrophilic monomer selected from alkyl acrylate or alkyl methacrylate esters of an alcohol wherein the alkyl portion of the alcohol has 1 to 2 carbon atoms, N-vinyl-2-pyrrolidone, or mixtures thererof, and (iv) a water-soluble or water-dispersible polymerizable surfactant selected from compounds having a terminal allyl amine moiety, polyoxyalkylene-1-(allyloxymethyl) alkyl ether sulfate salts, or mixtures thereof, and the average particle size of the polymer is less than or equal to 200 nm. Also disclosed are processes for preparing same.
REFERENCES:
patent: 4814514 (1989-03-01), Yokota et al.
patent: 5286843 (1994-02-01), Wood
patent: 5332854 (1994-07-01), Yokota et al.
patent: 5496603 (1996-03-01), Riedel et al.
patent: 5620796 (1997-04-01), Kawabata et al.
patent: 5928783 (1999-07-01), Phan et al.
patent: 6013722 (2000-01-01), Yang et al.
patent: 6190767 (2001-02-01), Ishikawa et al.
patent: 6239240 (2001-05-01), Schultz et al.
patent: 0554832 (1993-08-01), None
patent: 0971010 (2000-01-01), None
patent: 2596441 (1989-04-01), None
patent: 06-65551 (1994-03-01), None
patent: 09-278837 (1997-10-01), None
patent: WO 97/11996 (1997-04-01), None
patent: WO 9802497 (1998-01-01), None
patent: WO 00/61670 (2000-10-01), None
patent: WO 01/85867 (2001-11-01), None
Chen Augustin T.
Guo Jong-Shing
Pernecker Tibor
Lathrop & Gage L.C.
Surf Chip, Inc.
Yoon Tae H.
LandOfFree
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