Process for making dry microspheres

Details Process for making dry microspheres Process for making dry microspheres

1990-03-08

1993-01-19

Thibodeau, Paul J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 54, 521 55, 521 58, 521 59, 521 60, 427222, 428403, C08J 922

Patent

active

051807521

ABSTRACT:
Microsphere wet cake is mixed with a surface barrier coating effective to prevent agglomeration and surface bonding of the microspheres, and removing water by drying with continuous mixing at high shear. In a subsequent step, by the control of the application of heat and balancing temperature and low shear mixing, it is possible to also control expansion of the microspheres.
The surface barrier coating in the present invention is any one of a wide diversity of materials which meet the requirements of the intended function, i.e., to prevent the agglomeration of the microspheres during the process. Suitable materials include, by way of example, dry inorganic pigments or filler materials, and the like, and related organic materials.

REFERENCES:
patent: 4397799 (1983-08-01), Edgren et al.
patent: 4513106 (1985-04-01), Edgren et al.
patent: 4722943 (1985-02-01), Melber et al.
patent: 4771079 (1988-09-01), Melber
patent: 4829094 (1989-05-01), Melber et al.

Affiliated with

Also associated with

Rating

Process for making dry microspheres does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making dry microspheres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making dry microspheres will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-102455