Coating processes – Electrical product produced – Welding electrode
Patent
1990-01-09
1991-07-16
Lusignan, Michael
Coating processes
Electrical product produced
Welding electrode
427221, 523200, 523205, 524457, B05D 312
Patent
active
050324250
ABSTRACT:
A process of coating or encapsulating an inorganic powder is described in which the powder, preferably a pigment, is dispersed in an aqueous medium and an ethylenically unsaturated monomer is polymerized in the presence of the powder and while subjecting the reaction mixture to ultrasonic vibrations. The monomer is present in an amount not exceeding 200% by weight of the powder and preferably is an acrylate or methacrylate.
The powder has a cationic charge on its surface which can be generated by treatment of the surface with, preferably an aluminium salt.
REFERENCES:
patent: 3714102 (1973-01-01), Reiss
patent: 4071225 (1978-01-01), Holl
patent: 4590127 (1986-05-01), Hashimoto et al.
patent: 4620987 (1986-11-01), Yamashita et al.
patent: 4724161 (1988-02-01), Coutts et al.
Rachael Templeton-Knight, "Encapsulation of Inorganic Particles by Emulsion Polymerisation", Chemistry & Industry, Aug. 20, 1990, pp. 512-515.
Kenneth S. Suslick, "The Chemical Effects of Ultrasound", Scientific American, Feb. 1989, pp. 62-68.
John P. Lorimer and Timothy J. Mason, "Sonochemistry, Part 1-The Physical Aspects", Chem. Soc. Rev., 1987, 16, pp. 239-274.
P. Godard and J. P. Mercier, "Nouveauz developpements dan la technologie de l'encapsulation de pigments mineraux et dans la synthese de revetements protecteurs", Double Liaison-Chimie des Peintures No. 387-388, Jan.-Feb. 1988.
Masahiro Hasegawa, Kunio Arai and Shozaburo Saito, "Uniform Encapsulation of Fine Inorganic Powder with Soapless Emulsion Polymerization", Journal of Polymer Science: Part A: Polymer Chem., vol. 25, pp. 3117-3125 (1987).
Livsey Ian
Parry Rachael L.
Lusignan Michael
Tioxide Group PLC
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