Chemistry: fertilizers – Processes and products – Forms or conditioning
Patent
1975-02-06
1977-04-19
Hollrah, Glennon H.
Chemistry: fertilizers
Processes and products
Forms or conditioning
71 65, 71 79, 71DIG1, A01N 900
Patent
active
040185940
ABSTRACT:
A composition comprising a copolymer of from 20 to 60 parts of at least one member selected from the class consisting of acrylic and methacrylic acids, from 20 to 70 parts of one member selected from the class of lower alkyl acrylates and lower alkyl methacrylates, and from 5 to 20 parts of a plasticizing monomer, in which at least some of the acid groups have been neutralized by multivalent cations, where a chemical, exclusive of water and plasticizer, releasable from a film of the referenced copolymer, is formed by casting and drying an aqueous solution of the copolymer containing the chemical.
REFERENCES:
patent: 2652323 (1953-09-01), Mowry et al.
patent: 3248288 (1966-04-01), Wilder et al.
patent: 3299566 (1967-01-01), MacMullen
patent: 3576760 (1971-04-01), Gould et al.
patent: 3577517 (1971-05-01), Kubot et al.
patent: 3598565 (1971-08-01), Graves
patent: 3779952 (1973-12-01), Leonard, Jr.
Hollrah Glennon H.
Hydrophilics International, Inc.
LandOfFree
Sustained release polymers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sustained release polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sustained release polymers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-100858