Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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US Patent 4522971 - Polymers containing resorcinol monobenzoate
US Patent Issued on June 11, 1985
Estimated Patent Expiration Date:
February 25, 2003Estimated 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.
Estimated Patent Expiration Date:
February 25, 2003Estimated 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.AbstractResorcinol monobenzoate is reacted through the hydroxyl group preferably with an acrylic prepolymer containing glycidyl methacrylate. The product can be used in coating compositions and films to give highly ultraviolet absorbent properties.Other References
| InventorAssigneeApplicationNo. 06/469689 filed on 02/25/1983US Classes:524/547, From reactant-containing atom other than O, N, C, halogen, or hydrogen524/548, From heterocyclic monomer524/555, From nitrogen-containing monomer other than acrylonitrile or methacrylonitrile524/556, From carboxylic acid or ester thereof monomer524/558, Acid or ester contains an oxygen atom which is other than part of a free carboxyl group or carboxylic acid ester group524/559, Ester contains two or more ester groups or at least one carboxylic ester group and at least one free acid group; or carboxylic acid contains two or more free carboxyl groups524/560, From ester derived from at least one unsaturated carboxylic acid and a saturated alcohol, e.g., methyl methacrylate, etc.525/132, With saturated phenolic reactant or polymer thereof; or with solid copolymer derived from at least one phenolic reactant wherein at least one of the reactants forming the solid copolymer is saturated; or with SPFI wherein at least one of the necessary ingredients is a phenolic reactant or with a reaction product thereof; or with a SICP containing a phenolic group Si-H or Si-C bond525/327.3, Three membered chalcogen ring monomer, e.g., oxirane, etc.525/328.2, Polymer derived from monomer containing nitrogen other than: unsubstituted ammonium, acrylonitrile, acrylamide, methylolacrylamide and the corresponding methacryl materials525/328.9, Polymer derived from ether monomer525/384, Oxygen compound contains at least one alcohol group526/321Monomer containing at least two carboxylic acid ester groupsField of Search524/547, From reactant-containing atom other than O, N, C, halogen, or hydrogen524/548, From heterocyclic monomer524/555, From nitrogen-containing monomer other than acrylonitrile or methacrylonitrile524/556, From carboxylic acid or ester thereof monomer524/558, Acid or ester contains an oxygen atom which is other than part of a free carboxyl group or carboxylic acid ester group524/559Ester contains two or more ester groups or at least one carboxylic ester group and at least one free acid group; or carboxylic acid contains two or more free carboxyl groupsExaminersPrimary: Lipman, BernardUS Patent References2970066, 3113907, 3288880, 3328491, 3340231, 3341493, 3365421, 3418397, 3429852, 3441545, 3444129, 3445423, 3445566, 3595602, 3652492, 3849373, 3956269, Azo free radical initiators containing ultraviolet light stabilizing groupsIssued on: 05/11/1976 Inventor: Sheppard , et al.4208465, Clear coat/color coat finish containing an antioxidant and an ultraviolet light stabilizer Issued on: 06/17/1980 Inventor: Chang4210612, Novel polymeric N-heterocyclic compounds Issued on: 07/01/1980 Inventor: Karrer4278804, Ultraviolet light absorbing agents and compositions and articles containing same Issued on: 07/14/1981 Inventor: Ashby , et al.4294949, Novel polymeric compounds Issued on: 10/13/1981 Inventor: Karrer4308362, Copolymers of substituted piperidines, their manufacture and use Issued on: 12/29/1981 Inventor: Wiezer , et al.4310650, Ultraviolet absorbing copolymers Issued on: 01/12/1982 Inventor: Gupta , et al.4328346, Silane-functionalized ultraviolet screen precursors Issued on: 05/04/1982 Inventor: Chung , et al.4355071, Clear coat/color coat finish containing ultraviolet light stabilizer Issued on: 10/19/1982 Inventor: Chang4362895, Ultraviolet absorbing copolymers Issued on: 12/07/1982 Inventor: Gupta , et al.4372835Silane-functionalized ultraviolet screen precursors Issued on: 02/08/1983 Inventor: Chung , et al. International ClassesC08G 85/00 (20060101)C09D 7/12 (20060101) C08F 20/00 (20060101) C08F 20/30 (20060101) C08F 8/00 (20060101) |
