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:
Mar. 15, 2011
Filed:
Sep. 24, 2003
Salvador Aldrett-lee, Katy, TX (US);
Diane E. Allen, St. Charles, MO (US);
Olan Stanley Fruchey, Hurricane, WV (US);
Roger L. Roundy, Hurricane, WV (US);
Tao Wang, Houston, TX (US);
Salvador Aldrett-Lee, Katy, TX (US);
Diane E. Allen, St. Charles, MO (US);
Olan Stanley Fruchey, Hurricane, WV (US);
Roger L. Roundy, Hurricane, WV (US);
Tao Wang, Houston, TX (US);
Arkema Inc., Philadelphia, PA (US);
Abstract
Materials for making apparatus and a method of inhibiting polymerization during manufacture, purification, handling and storage of subject ethylenically unsaturated monomers are disclosed. In particular, copper or metals containing copper, in the presence of oxygen, have inhibit undesired polymerization resulting in polymer fouling in apparatus used during the manufacture, purification, handling and storage of the monomers, such as acrylic acid, methacrylic acid, acrylic acid esters and methacrylic acid esters. The copper or copper alloys as described herein, in the presence of an oxygen-containing gas, exhibit self-inhibiting surface characteristics when used to make at least a portion of the apparatus to inhibit polymerization of the monomers in contact with the portion of the apparatus including such copper-containing metal.