Preparation method of spherical melamine resin particulates havi

Details Preparation method of spherical melamine resin particulates havi Preparation method of spherical melamine resin particulates havi

1990-06-20

1991-11-19

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From aldehyde or derivative thereof as reactant

528232, 528242, 528243, 528254, 528487, 528490, 528491, 528503, C08G 1604

Patent

active

050667688

ABSTRACT:
According to the present invention, spherical melamine resin particulates having a uniform particle size and crosslinked structure can be prepared by adding an acid catalyst to an aqueous solution containing at least 0.5 to less than 5% by weight of a melamine derivative which is polymerizable in the acid region, to adjust the pH of the aqueous solution to at least 4 to less than 5, and carrying out heat-treatment of the aqueous solution.
The spherical melamine resin particulates thus obtained are useful as additives for coating compositions, pigments and other materials.

REFERENCES:
patent: 2926079 (1960-02-01), Smith
patent: 3705019 (1972-12-01), Mesiah et al.
patent: 4083712 (1978-04-01), Corte et al.
patent: 4387212 (1983-06-01), Hummerich et al.
patent: 4421545 (1983-12-01), Crews
patent: 4560400 (1985-12-01), Allan et al.

Affiliated with

Also associated with

Rating

Preparation method of spherical melamine resin particulates havi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation method of spherical melamine resin particulates havi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation method of spherical melamine resin particulates havi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1371362