Polymer binder for intumescent coatings
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United States of America Patent
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Oct 30, 2007
Grant Date -
Oct 26, 2006
app pub date -
Jun 23, 2006
filing date -
Dec 20, 2002
priority date (Note) -
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Abstract
The present invention discloses a copolymer composition for use in or as a polymeric binder in an intumescent coating, said copolymer composition comprising a blend of a Newtonian copolymer and of a reticulated copolymer, wherein the Newtonian copolymer is comprised of p-methylstyrene repeat units and 2-ethylhexylacrylate repeat units, and wherein the reticulated copolymer is comprised of p-methylstyrene repeat units and 2-ethylhexylacrylate repeat units. The present invention further reveals an intumescent coating which is comprised of a copolymer composition comprising a blend of a Newtonian copolymer, a reticulated copolymer, a film-forming substance, and a carbon forming substance, wherein the Newtonian copolymer is comprised of p-methylstyrene repeat units and 2-ethylhexylacrylate repeat units, and wherein the reticulated copolymer is comprised of p-methylstyrene repeat units and 2-ethylhexylacrylate repeat units.
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