EP0282951A2
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EP
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Controlled release preparations of active materials
Assignee: NOF Corp
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Filing: 1988-03-14
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Granted: —
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Expires: 2008-03-14
Abstract
Abstract A controlled release preparation of an active material comprising a reaction product obtained by reacting (a) a copolymer consisting essentially of maleic anhydride and at least one polyalkylene glycol ether represented by (I): wherein B represents a residue of a compound having from 2 to 8 hydroxyl groups; R¹ represents an alkenyl group having from 2 to 5 carbon atoms; AO represents an oxyalkylene group having from 2 to 18 carbon atoms or a combination thereof which may be linked together in blocks or at random; R² represents a hydrocarbon group having from 1 to 24 carbon atoms; a represents a positive integer, b and c each represents 0 or a positive integer, and a + b + c = 2 to 8; ℓ ≧ 0, m ≧ 0, n ≧ 0, and ℓ + m + n = 1 to 1000; and (b) an active material. The preparation is soluble both in water and in an organic solvent and exhibits activity for a prolonged period of time.
Inventors
- 👤 Shin-Ichi Akimoto
- 👤 Susumu Honda
- 👤 Tohru Yasukohchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 13:13
CPC Classifications
C; C08; C08F; C08F222/00; C08F222/04; C08F222/06; A; A61; A61K; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/58; C08F8/00; C08F8/14; C08F8/30; C08F8/32; C08F8/42; C08F2800/00; C08F2800/10; C08F2800/20; C08F2810/00; C08F2810/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
148 words
A controlled release preparation of an active material comprising a reaction product obtained by reacting (a) a copolymer consisting essentially of maleic anhydride and at least one polyalkylene glycol ether represented by formula (I): wherein B represents a residue of a compound having from 2 to 8 hydroxyl groups; R¹ represents an alkenyl group having from 2 to 5 carbon atoms; AO represents an oxyalkylene group having from 2 to 18 carbon atoms or a combination thereof which may be linked together in blocks or at random; R² represents a hydrocarbon group having from 1 to 24 carbon atoms; a represents a positive integer, b and c each represents 0 or a positive integer, and a + b + c = 2 to 8; ℓ ≧ 0, m ≧ 0, n ≧ 0, and ℓ + m + n = 1 to 1000; and (b) an active material.
Claim 2
Dependent Claim
148 words
A controlled release preparation of an active material comprising a reaction product obtained by reacting (a) a copolymer consisting essentially of maleic anhydride and at least one polyalkylene glycol ether represented by formula (I): wherein B represents a residue of a compound having from 2 to 8 hydroxyl groups; R¹ represents an alkenyl group having from 2 to 5 carbon atoms; AO represents an oxyalkylene group having from 2 to 18 carbon atoms or a combination thereof which may be linked together in blocks or at random; R² represents a hydrocarbon group having from 1 to 24 carbon atoms; a represents a positive integer, b and c each represents 0 or a positive integer, and a + b + c = 2 to 8; ℓ ≧ 0, m ≧ 0, n ≧ 0, and ℓ + m + n = 1 to 1000; and (b) an active material.
Claim 3
Dependent Claim
41 words
A controlled release preparation of an active material as claimed in claim 1, wherein said copolymer further comprises at least one member selected from the group consisting of styrene, methylstyrene, vinyl chloride, vinylidene chloride, isobutylene, diisobutylene, vinyl acetate, acrylonitrile, and acrylamide.
Claim 4
Dependent Claim
28 words
A controlled release preparation of an active material as claimed in claim 1, wherein said active material is a compound having a hydroxyl group or an amino group.
Claim 5
Dependent Claim
36 words
A controlled release preparation of an active material as claimed in claim 3, wherein said compound having a hydroxyl group is a perfume, a growth regulating substance, a pheromone, a hormone, a vitamine or a glycoside.
Claim 6
Dependent Claim
28 words
A controlled release preparation of an active material as claimed in claim 4, wherein said perfume is linalool, geraniol, citronellol, eugenol, benzyl alcohol, phenethyl alcohol or cinnamic alcohol.
Claim 7
Dependent Claim
25 words
A controlled release preparation of an active material as claimed in claim 4, wherein said growth regulating substance is n-decanol, p-menthane-3,8-diol, gibberelline, cytokinin or indol-3-ethanol.
Claim 8
Dependent Claim
21 words
A controlled release preparation of an active material as claimed in claim 4, wherein said pheromone is 9-tetradecene-1-ol, 6-nonene-1-ol or 6-methyl-5-heptene-1-ol.
Claim 9
Dependent Claim
23 words
8 A controlled release preparation of an active material as claimed in claim 4, wherein said hormone is oestradiol, testosterone, hydroxytestosterone or cortisone.
Claim 10
Dependent Claim
23 words
9 A controlled release preparation of an active material as claimed in claim 4, wherein said vitamine is vitamine A, B₆ or C.
Claim 11
Dependent Claim
20 words
A controlled release preparation of an active material as claimed in claim 4, wherein said glycoside is saponine or anthocyan.
Claim 12
Dependent Claim
33 words
A controlled release preparation of an active material as claimed in claim 3, wherein said compound having an amino group is an enzyme, a peptide other than enzymes, an aminoglucoside, or a pesticide.
Claim 13
Dependent Claim
28 words
A controlled release preparation of an active material as claimed in claim 11, wherein said enzyme is a hydrolase, an oxidoreductase, an isomerase, a transferase or an eliminase.
Claim 14
Dependent Claim
51 words
A controlled release preparation of an active material as claimed in claim 11, wherein said enzyme is amylase, protease, cellulase, hemicellulase, lipase, pectinase, lysozyme, hesperidinase, anthocyanase, aminoacylase, urease, invertase, melibiase, dextranase, peptidase, ribonuclease, lactase, glucose oxidase, uricase, catalase, lipoxygenase, cytochrome C, peroxidase, glucose isomerase, cyclodextrin glucosyltransferase, transaminase, aspartase, hyaluronidase, or chondroitinase.
Claim 15
Dependent Claim
20 words
A controlled release preparation of an active material as claimed in claim 11, wherein said pesticide is 3,5-dichloroaniline or 2,6-dichloro-4-nitroaniline.
References Cited (Backward Citations)
No citation records indexed.
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