Powder coatings containing copolymer containing isobornyl methacrylate as melt flow modifier
Patent 4286021 Issued on August 25, 1981. Estimated Expiration Date: 
August 25, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 25, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3240744 3248253 3264371 3336903 3396699 3459578 3485775 3536788 3549403 3681298 InventorAssigneeApplicationNo. 05/578289 filed on 05/16/1975US Classes:428/413, Of epoxy ether427/195, Synthetic resin particles427/485, Coating contains organic material428/419, Of polythioether428/421, Of fluorinated addition polymer from unsaturated monomers428/447, As siloxane, silicone or silane428/473.5, Of polyimide428/475.5, Nylon type428/480, Of polyester (e.g., alkyd, etc.)428/500, Of addition polymer from unsaturated monomers428/521, Polyene monomer-containing428/522Ester, halide or nitrile of addition polymerExaminersPrimary: Beck, ShriveInternational ClassC09D 133/00 (20060101)AbstractLow molecular weight copolymers of (1) acrylic acid esters or methacrylic acid esters of alcohols such as methanol with (2) esters of bicyclic alcohols such as isobornyl alcohol and unsaturated acids such as methacrylic acid, as contrasted with high molecular weight copolymers of such monomers (1) and (2) (see U.S. Pat. No. 3,485,775) and as contrasted to other acrylic polymers, are found to be exceptional in compatibility with practically all types of hard coating resins, and to lower the flow temperature of the mixture when using powder coating methods such as an electrostatic spray or a fluidized bed, electrostatic or not, as compared with the use of the hard coating resin alone. | |
