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
2005-08-16
2005-08-16
Wu, David W. (Department: 1713)
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...
C524S502000, C524S556000, C524S560000, C526S224000, C526S229000
Reexamination Certificate
active
06930141
ABSTRACT:
An aqueous polymer blend composition including a predominant amount of soft polymer particles and a minor amount of hard polymer particles is provided. The soft polymer particles contain, as copolymerized units, 70 to 99.7% by weight monoethylenically unsaturated (meth)acrylic monomer and from 0.3 to 10% by weight monoethylenically unsaturated acid monomer, based on weight of soft polymer particles. The soft polymer particles are made by a select process including redox polymerization or polymerization in the presence of excess unreacted monomer. The aqueous polymer blend composition is useful for preparing dry coatings having improved dirt pickup resistance and acceptable scrub resistance. A method is provided for preparing a dry coating from the aqueous polymer blend composition.
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Copending Application 10/162,456; filing date: Jun. 4, 2002.
Copending Application 10/162,457; filing date Jun. 4, 2002.
Copending Application 09/981,350, filing date Oct, 17, 2001.
U.S. Appl. No. 10/162,456, filed Jun. 4, 2002.
U.S. Appl. No. 10/162,457, filed Jun. 4, 2002.
U.S. Appl. No. 09/981,350, filed Oct. 17, 2001.
Baker Bonnie Elizabeth
Eckert Cindy
Edwards Steven Scott
Even Ralph Craig
Fradkin Deborah Gay
Greenblatt Gary D.
Jessum Kim R.
Rohm and Haas Company
Sastri Satya
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