Polymeric particles and their preparation

Details Polymeric particles and their preparation Polymeric particles and their preparation

1988-07-13

1989-09-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 57, 521134, 521 54, 525301, 525902, 523201, C08J 928, C08F26504

Patent

active

048639737

ABSTRACT:
Swollen core/sheath polymeric particles are disclosed having one or more voids in the core formed by reaction with a base such as sodium hydroxide. The sheath contains styrene or similar monomer polymerized in an amount greater than 25 mole percent and the polymer is free of acid groups. The core contains acid groups. Swelling is effected at an elevated temperature and in the absence of an organic solvent.
The swollen particles on drying in a paint or other composition have air in the voids and act then as opacifying agents.

REFERENCES:
patent: 3359130 (1967-12-01), Goldman
patent: 3379799 (1968-04-01), Goldman
patent: 3431319 (1969-03-01), Baum
patent: 4044176 (1977-08-01), Wolinski
patent: 4107120 (1978-08-01), Plamondom et al.
patent: 4181769 (1980-01-01), Plamondom et al.
patent: 4226752 (1980-10-01), Ericson et al.
patent: 4325856 (1982-04-01), Ishikawa et al.
patent: 4419496 (1983-12-01), Henton et al.
patent: 4427836 (1984-01-01), Kowalski et al.
patent: 4468498 (1984-08-01), Kowalski et al.
patent: 4469825 (1984-09-01), Kowalski et al.
patent: 4497917 (1985-02-01), Upson et al.
patent: 4521568 (1985-06-01), Mori et al.
patent: 4543383 (1985-09-01), Heil et al.
patent: 4594363 (1986-06-01), Blakenship et al.
patent: 4677003 (1987-06-01), Redlich et al.
patent: 4717750 (1988-01-01), Makati et al.

Affiliated with

Also associated with

Rating

Polymeric particles and their preparation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polymeric particles and their preparation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymeric particles and their preparation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-243965