"A PROCESS FOR PREPARING THE PIGMENT DISPERSION USEFUL FOR FORMING COATING COMPOSITION"
Application 2079/DEL/1998 published 2008-08-01, filed 1998-07-17
A process for preparing the pigment dispersion useful for forming coating composition comprising dispersed pigment, a carrier liquid and an AB-block polymer dispersant (binder) in which the AB block polymer is formed by the process comprising: (a) taking AB block polymer having a weight average molecular weight of 5,000-20,000; and consist of 20-80% by weight of a polymeric A segment and correspondingly 80-20% by weight of polymeric B segment and (b) reacting the said polymer with an acid selected from the group of aromatic carboxylic acids and aliphatic carboxylic acids to react the glycidyl groups and remove the silicone blocking groups from the polymer; and (c) dispersing pigment in the AB block polymer dispersion to form a pigment dispersion in weight ratio of pigment to binder 1/100 to 200/100. No. of Pages : 16 No. of Claims : 3
Applicant
1)E. I. DU PONT DE NEMOURS AND COMPANY, INC.,
:WILMINGTON, DELAWARE, U.S.A U.S.A.
Inventor
1)PATRICK F. MCINTYRE 2)JAMES G. KING 3)HARRY J. SPINELLI 4)HENRY L. JAKUBAUSKAS
International Info
Classification: C08F 2/16
Priority Information
08/896,588 U.S.A. 1997-07-17