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:
Feb. 08, 2005
Filed:
Oct. 03, 2002
Pei Wen Jin, Cary, NC (US);
Kimberly R. Benca, Clayton, NC (US);
Ian C. Quarmby, Apex, NC (US);
Thomas Kurpiewski, Erie, NC (US);
Victor E. Ferrell, Fuquay-Varina, NC (US);
Pei Wen Jin, Cary, NC (US);
Kimberly R. Benca, Clayton, NC (US);
Ian C. Quarmby, Apex, NC (US);
Thomas Kurpiewski, Erie, NC (US);
Victor E. Ferrell, Fuquay-Varina, NC (US);
Lord Corporation, Cary, NC (US);
Abstract
The invention provides curable organic coatings with improved scratch resistance. More particularly, the present invention relates to a combination of inorganic filler having a 50percentile particle diameter of from about 3 to about 9 micrometers comprised of aluminum oxide, silicon dioxide, ceramic spheres or mixtures thereof, and particles having a 50percentile particle diameter of from about 10 to about 150 micrometers. The liquid coatings have a viscosity before curing of from about 100 cps (mPa-s) to about 70,000 cps (mPa-s) at a shear rate of 0.15 s. The use of inorganic filler materials of the defined type and particle size are combined with the curable organic coating to improve the scratch resistance of the coating without a negative impact on the physical and performance properties or application parameters of the original coating material. The present invention also provides organic coatings comprising texture-producing particles which provide the coating with texture after the coating has been cured.