The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 1977
Filed:
Nov. 05, 1975
Stephen Chung-Suen Peng, Rochester, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
A method of preparing a homogeneous thermosetting powder paint composition which cures to form a coating exhibiting outstanding exterior durability, adhesion, impact strength and, in particular, color match. The method comprises: introducing a liquid paint composition including at least a cross-linkable copolymer and a uniformly dispersed pigment into an evaporating zone adapted to heat said liquid paint so as to evaporate the inert solvent contained therein, passing the liquid paint into a separating zone; causing said solvent vapor to be removed; removing the non-volatile components of said paint in a molten state; cooling said non-volatile components; granulating said non-volatile components to form particles; blending a cross-linking agent for said copolymer with said powder; mixing said blend at a temperature greater than the melting point of said powder and said cross-linking agent but below the point at which cross-linking occurs so to form a molten mass having cross-linking agent uniformly dispersed therein; cooling said molten mass to form a solid material; and pulverizing to form a powder paint.