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. 01, 2017
Filed:
Oct. 29, 2009
Christopher M. Tanguay, Trenton, MI (US);
John Erickson, Southgate, MI (US);
Victoria Manea, Bowling Green, OH (US);
Jyh-chiarng Huarng, Northville, MI (US);
Rajesh Kumar, Riverview, MI (US);
Fikri Emrah Alemdaroglu, Erenkoy Istanbul, TR;
Christopher M. Tanguay, Trenton, MI (US);
John Erickson, Southgate, MI (US);
Victoria Manea, Bowling Green, OH (US);
Jyh-Chiarng Huarng, Northville, MI (US);
Rajesh Kumar, Riverview, MI (US);
Fikri Emrah Alemdaroglu, Erenkoy Istanbul, TR;
BASF SE, Ludwigshafen, DE;
Abstract
A proppant comprises a particle and a polycarbodiimide coating disposed on the particle. The polycarbodiimide coating comprises the reaction product of a polymeric isocyanate and a monomeric isocyanate, in the presence of a catalyst. A method of forming the proppant comprises the steps of providing the particle, providing the polymeric isocyanate, providing the monomeric isocyanate, providing the catalyst, reacting the polymeric isocyanate and the monomeric isocyanate in the presence of the catalyst to form the polycarbodiimide coating, and coating the particle with the polycarbodiimide coating.