Controlled-release compositions for acids

Details Controlled-release compositions for acids Controlled-release compositions for acids

B - Operations, Transporting

01

J

117/46

B01J 2/00 (2006.01) C09C 3/00 (2006.01)

Patent

CA 2015590

ABSTRACT A controlled release, encapsulated acid composition and a method of preparation are disclosed. The composition comprises (1) a porous matrix having an acid absorbed therein, the matrix being substantially inert to the absorbed acid; (2) a midlayer surrounding the matrix, this midlayer consisting essentially of at least one salt of the absorbed acid; and (3) a membrane surrounding the matrix, the membrane being exterior of the midlayer, the membrane further being substantially inert to the midlayer and permeable to a selected environment. The membrane preferably also includes particulate material which acts as an anticoalescent. The midlayer can be applied as a coating to the acid-bearing matrix, or it can be evolved by exposing the acid bearing matrix to a base such as ammonia gas or a solid metal oxide for a time sufficient to allow reaction of a proportion of the acid at or near the surface of the matrix with the base or oxide to form a layer of the corresponding salt. 35,306-F

Affiliated with

Also associated with

Rating

Controlled-release compositions for acids does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Controlled-release compositions for acids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controlled-release compositions for acids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1660220