Swaminathan Ramesh of Canton, Mich., and Marvin L. Green of Brighton, Mich., have developed an acrylic composition and a
curable coating composition including the same.
According to the U.S. Patent & Trademark Office: "An acrylic composition includes the reaction product of an acrylic polymer and carbon dioxide. The acrylic polymer includes the reaction product of a
functionalized monomer, a first
compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer. The first compound also includes epoxy functionality."
An abstract of the invention, released by the Patent Office, said: "The carbon dioxide is reactive with the acrylic polymer to form a carbonate-functional acrylic polymer. The acrylic composition is highly-branched and, when used in coating compositions in combination with a suitable cross-linking agent, enhances recoat adhesion and produces cured films that have optimum scratch, mar, and chip performance, and acid etch resistance."
The inventors were issued U.S. Patent No. 7,220,811 on May 22.
The patent has been assigned to BASF Corp., Southfield, Mich.
The original application was filed on March 23, 2005, and is available at: http://patft.uspto.gov/netacgi/nph-Parser?Se ct1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetah tml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7,220,811.PN.&OS=PN/7,220,811&RS=PN/7,220,811.