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. 11, 2009
Filed:
Dec. 16, 2002
Walter L. Renz, Brookfield, CT (US);
Ramanathan Ravichandran, Suffern, NY (US);
Andrew J. Naisby, Yorktown Heights, NY (US);
Joseph Suhadolnik, Yorktown Heights, NY (US);
Mervin Gale Wood, Mobile, AL (US);
Rong Xiong, Dobbs Ferry, NY (US);
Walter L. Renz, Brookfield, CT (US);
Ramanathan Ravichandran, Suffern, NY (US);
Andrew J. Naisby, Yorktown Heights, NY (US);
Joseph Suhadolnik, Yorktown Heights, NY (US);
Mervin Gale Wood, Mobile, AL (US);
Rong Xiong, Dobbs Ferry, NY (US);
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The invention relates to poly(vinylalcohol)-co-poly(vinylamine) copolymers represented as formula (I), where B is greater than or equal to 1, L is independently of each other a chemical linking group which is —NH—, —N═, >N—, >N+<, —O— or —CO—, COPOLYMER is derived from a prepolymer of the formula (II) where Rand Rare independently H; 3-propionic acid or C,-Calkyl ester thereof; or is 2-methyl-3-propionic acid or C-Calkyl ester thereof, Rand Rare independently H or C,-Calkyl, x+y+z is between about 3 and about 50 mole percent and q, n and m together make up the remainder of the mole percent, the indices x, y, z, n, m -and q independently may be 0, if q is not 0, b may also be 0.