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:
May. 13, 2008
Filed:
Oct. 21, 2004
Lanny D. Venham, Oakdale, PA (US);
Kyli Martin, Bridgeville, PA (US);
Richard R. Roesler, Wexford, PA (US);
Myron W. Shaffer, New Cumberland, WV (US);
Michael K. Jeffries, Follansbee, WV (US);
Lanny D. Venham, Oakdale, PA (US);
Kyli Martin, Bridgeville, PA (US);
Richard R. Roesler, Wexford, PA (US);
Myron W. Shaffer, New Cumberland, WV (US);
Michael K. Jeffries, Follansbee, WV (US);
Bayer MaterialScience LLC, Pittsburgh, PA (US);
Abstract
The present invention is directed to blocked biuret group-containing polyisocyanate compositions, wherein the blocking agent is of the formula: wherein R, R, Rand Rmay be the same or different and represent a moiety selected from the group consisting of hydrogen, C-C-alkyl and C-C-cycloalkyl, Rrepresents a moiety selected from the group consisting of C-C-alkyl and C-C-cycloalkyl, and B is a group according to one of the following structural formulas wherein each occurrence of R, R, and Rmay be the same or different and represent a moiety selected from the group consisting of C-C-alkyl and C-C-cycloalkyl and Ris a moiety selected from the group consisting of hydrogen, C-C-alkyl and C-C-cycloalkyl.