C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
400/5050, 204/97
C25D 13/06 (2006.01) C08F 2/22 (2006.01) C08F 283/02 (2006.01) C08F 283/10 (2006.01) C09D 5/44 (2006.01)
Patent
CA 1179436
ABSTRACT OF THE INVENTION This invention relates to the preparation of aqueous dispersions of film-forming polymer particles wherein the dispersions comprise both pre-formed polymer and polymer formed in situ, and to the use of these dispersions in coating compositions which can be applied by cationic electrophoresis. Previous dispersions of the general type hereinabove described can be cationically electrodeposited but do not give films of adequate integrity and adhesion. The present invention overcomes these drawbacks by using a process wherein (a) pre-formed polymer or polymer plasciciser is dissolved in polymerisable monomer and the resulting solution stably dispersed in water in the presence of a surface active agent, and (b) the monomer is polymerised to give a particulate dispersion. Prior to polymerisation the dispersion must comply with specific pH requirements involving ensuring instability within the pH range 10-11 and the surface active agent must be cationic and have an H.L.B. value of at least 8.
381076
Gibson David V.
Mckay Garry M.
Swalwell John E.
Dulux Australia Ltd.
Roussin Bernard F.
LandOfFree
Dispersion process and product does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dispersion process and product, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dispersion process and product will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1178799