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
2006-08-08
2006-08-08
Choi, Ling-Sui (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, C524S513000, C524S522000, C524S584000, C524S539000, C427S388400
Reexamination Certificate
active
07087672
ABSTRACT:
A non-yellowing coating composition particularly useful as primer that has a low VOC and excellent adhesion and chip resistance and comprises an aqueous coating composition having a VOC of less than 0.12 kg/L (1.0 pounds/gallon) comprising 25-70% by weight of a film forming binder and correspondingly, 75-30% by weight of an aqueous carrier for the binder and the composition contains pigment in a pigment to binder weight ratio of 5/100 to 150/100 and has a pH of 7-10; wherein the binder comprisesa. 50-90% by weight, based on the weight of the binder, of a blend of the following constituents: a dispersed acrylic polymer, a dispersed polyester having an acid value of 15-60, a number average molecular weight from 1500-7000 and a hydroxyl value of not more than 95 and a hydroxy terminated component that is either a polyalkylene ether polyol or a urethane diol or a mixture of the above hydroxy terminated components, andb. 10-50% by weight, based on the weight of the binder, of a water-compatible alkylated melamine formaldehyde crosslinking agent; andwherein a hydroxy functional alkyl amine is used to neutralize the binder and adjust the pH of the composition.
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Copy of International Search Report (PCT/US03/14220) dated May 5, 2003.
Chinn Mitchell S.
Yuan San C.
Benjamin Steven C.
Choi Ling-Sui
E. I. du Pont de Nemours and Company
Sastri Satya B
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