U.S. patents available from 1976 to present.
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High-solids coating composition for improved rheology control containing chemically modified inorganic microparticles

Patent 4522958 Issued on June 11, 1985. Estimated Expiration Date: Icon_subject September 6, 2003. 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

2801185

2801186

3131148

3178321

3547663

3574135

3689300

3699049

3855145

Process for preparing silica organosols
Patent #: 3948799
Issued on: 04/06/1976
Inventor: Schaefer ,   et al.

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Inventors

Assignee

Application

No. 06/529421 filed on 09/06/1983

US Classes:

523/212, Product having a silicon atom as part of an organic compound428/418, Next to metal428/423.1, Of polyamidoester (polyurethane, polyisocyanate, polycarbamate, etc.)428/458, Next to polyester, polyamide or polyimide (e.g., alkyd, glue, or nylon, etc.)428/480, Of polyester (e.g., alkyd, etc.)428/482, Of cross-linked polyester523/216, Product having a silicon atom523/220, Process of forming a composition having two or more solid materials having defined physical dimensions or surface areas; or composition containing same523/456, Organic chalcogen compound DNRM523/466, Inorganic SI-O bond DNRM523/511, Organic chalcogen other than metallocarboxylate salt, e.g., diethylene glycol, etc., DNRM523/521, Inorganic silicon atom other than glass DNRM524/441, Aluminum DNRM524/493, Inorganic silicon-containing material having specified dimensions524/502, At least one solid polymer derived from ethylenic reactants only524/558, Acid or ester contains an oxygen atom which is other than part of a free carboxyl group or carboxylic acid ester group524/561, Interpolymerized with diverse carboxylic acid ester524/562, Interpolymerized with hydrocarbon containing a single ethylenic group524/563, From ester derived from ethylenically unsaturated alcohol and saturated carboxylic acid, e.g., vinyl acetate, etc.524/564, Interpolymerized with diverse carboxylic acid ester or with carboxylic acid reactant524/566, Inorganic nonreactive material524/590, With reactant containing at least one C-OH, (C=O)-OH or -C-O-C- group524/601, From dicarboxylic acid or derivative and at least one polyol; or from a diester of a polycarboxylic acid as sole reactant524/606Nitrogen-containing reactant

Examiners

Primary: Jacobs, Lewis T.

Attorney, Agent or Firm

International Classes

C09C 1/30 (20060101)
C09C 1/28 (20060101)
C09D 7/12 (20060101)

Abstract

Disclosed is an essentially solvent-based, organic, high-solids coating composition containing (A) a film-forming binder system containing a crosslinkable resin having a weight average molecular weight of from about 500 to about 10,000; (B) substantially colorless, substantially inorganic microparticles stably dispersed in the coating composition; and (C) a solvent system for the crosslinkable resin. The inorganic microparticles prior to incorporation in the coating composition range in size from about 1 to about 150 nanometers and are in the form of a sol of the microparticles in which carbon-containing molecules are chemically bonded to the inorganic microparticles at the surface of the microparticles.

Other References

  • CAB-O-SIL Technical Data, "CAB-O-SIL Fumed Silica for Rheology Control of High Solids Coatings", by Dennis Miller, Cabot Corporation, Oct. 1981
  • Technical Service Laboratory Report, CAB-O-Sil as a Transparent Extender in Automotive Enamels, pp. 1-3, Godfrey L. Cabot, Inc., Jan. 1955
  • Progress in Organic Coatings, 10, (1982), pp. 91-118, "Amorphous Synthetic Silica Products in Powder Form. Part 2. Applications [1]", Horst Ferch
  • Journal of Colloid and Interface Science, vol. 26, pp. 62-69, (1968), "Controlled Growth of Monodisperse Silica Spheres in the Micron Size Range", by Stober et al
  • Journal of Colloid and Interface Science, vol. 81, No. 2, pp. 354-368, (1981), "Preparation and Characterization of Spherical Monodisperse Silica Dispersions in Nonaqueous Solvents", Van Helden et al
  • Journal of Colloid and Interface Science, vol. 79, pp. 289-294, (1981), "Preparation of Sterically Stabilized Silica Dispersions in Nonaqueous Media", by H. De Hek et al
  • "CAB-O-SIL In Coatings", pp. 4 and 11, a trade bulletin published by CABOT Corporation on or before Mar. 5, 1973
  • Journal of Colloid and Interface Science, vol. 84, No. 2, pp. 409-422, (1981), "Interactions in Mixtures of Colloidal Silica Spheres and Polystyrene Molecules in Cyclohexane", De Hek et al
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