Polycationic block copolymer

US4719282A · kind A · utility

Assignee

• Miranol Inc.

Inventors

• Richard J. Nadolsky · Houston, US
• Bharat Desai · Spartanburg, US

Key dates

• Filing date: Apr 22, 1986
• Grant date: Jan 12, 1988
• Expiry date: Apr 22, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31504
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Novel polycationic block copolymers useful as antistatic agents in detergent formulations and as flocculating agents are obtained by first forming a block of units by reacting a monomer of the formula II ##STR1## wherein each of R.sub.5, R.sub.6, R.sub.7 and R.sub.8 may be the same or different and is selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 hydroxy alkyl and polyoxyalkylene, PA1 m is an integer from 0 to 34 and PA1 r and s are the same or different and are integers from 1 to 6, PA1 with a molar excess of a dihalide of the formula EQU Hal--L--Hal PA1 wherein Hal represents a halogen atom and L is selected from EQU --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 --, --(CH.sub.2).sub.t -- AND --CH.sub.2 CHOHCH.sub.2 -- PA1 where t is an integer from 2 to 6 and thereafter reacting the product so formed with a compound of the formula III ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each individually selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 hydroxyalkyl and polyoxyalkylne and p, and q are each individually integers of form 1 to 6 and, if necessary, in order to ensure a t…