Patent CA1099429A successfully refreshed from Google Patents.
CA1099429A
Expired / Lapsed
CA
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Polymeric compositions for controlled release of active ingredients
Assignee: Bush Boake Allen Ltd
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Filing: 1977-02-04
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Granted: 1981-04-14
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Expires: 1997-02-04
Abstract
Abstract ABSTRACT OF THE DISCLOSURE Polymeric compositions comprise a polymer of a hydroxyl-containing vinylically unsaturated carboxylic ester, a volatilizable active ingredient such as a fragrance oil and a solubilizing agent which is compatible with the polymer and which is more compatible with the active ingredient than is the polymer, whereby the active ingredient is maintained at least partly in solution in the composition. The polymeric compositions permit controlled release of the volatilizable active ingredient into a medium in which they perform a useful function.
Inventors
- 👤 Robert D. Kross
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-05 21:06
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; A01; A01N; A01N25/00; A01N25/08; A01N25/10; A01N25/18; A61K8/02; A61K8/0208; A61K9/00; A61K9/0012; A61K9/007; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2027; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/042; A61L9/044; A61Q; A61Q13/00; A61Q19/00; C; C08; C08F; C08F2/00; C08F2/44; C08K; C08K5/00; C08K5/0008; C08K5/0058
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
87 words
A clear transparent resin composition which comprises a synthetic hydroxyl-containing polymer of at least one vinylically-unsaturated carboxylic ester which has at least one hydroxy group having dissolved therein (A) a volatilizable active ingredient and (B) a solubilizing agent which is an organic cation or a non-ionic compound having both hydrophilic and lipophilic functions which is compatible with the polymer or soluble in any aqueous phase contained in the polymer composition and which is more compatible with the active ingredient or a component thereof than is the polymer.
Claim 2
Dependent Claim
87 words
A clear transparent resin composition which comprises a synthetic hydroxyl-containing polymer of at least one vinylically-unsaturated carboxylic ester which has at least one hydroxy group having dissolved therein (A) a volatilizable active ingredient and (B) a solubilizing agent which is an organic cation or a non-ionic compound having both hydrophilic and lipophilic functions which is compatible with the polymer or soluble in any aqueous phase contained in the polymer composition and which is more compatible with the active ingredient or a component thereof than is the polymer.
Claim 3
Dependent Claim
26 words
A composition according to claim 1 wherein the monomers used to form the polymer comprise hydroxyethyl, hydroxypropyl, hydroxybutyl and/or glyceryl esters of acrylic and/or methacrylic acids.
Claim 4
Dependent Claim
21 words
A composition according to claim 1 or 2 wherein the monomers comprise polyoxyalkylated derivatives of the esters specified in claim 2.
Claim 5
Dependent Claim
20 words
A composition according to claim 1 wherein the monomers comprise a proportion of monomers having at least 2 vinylic functions.
Claim 6
Dependent Claim
22 words
A composition according to claim 4 wherein the monomers comprise diacrylates and/or dimethacrylates of ethylene glycol, 1,3-butylene glycol, 1,6-hexanediol, gly-cerol and/or trimethylolpropane.
Claim 7
Dependent Claim
20 words
A composition according to claim 4 wherein the monomers used to provide said polymer comprises triacrylate, and/or trimethacrylate of trimethylolpropane.
Claim 8
Dependent Claim
21 words
A composition according to claim 4 wherein the monomers used to prepare said polymer comprise the triacrylate and/or trimethacrylate of pentaerythritol.
Claim 9
Dependent Claim
24 words
A composition according to claim 1 containing at least 50% of hydroxyl groups or equivalent hydrophilic functionality based on the molar proportion of monomer.
Claim 10
Dependent Claim
23 words
A composition according to claim 8 wherein the polymer contains at least 90% of hydroxyl groups based on the molar proportion of monomer.
Claim 11
Dependent Claim
18 words
A composition according to claim 1 wherein up to 20% of the polymer is derived from branched monomers.
Claim 12
Dependent Claim
18 words
A composition according to claim 10 wherein up to 10% of the polymer is derived from branched monomers.
Claim 13
Dependent Claim
17 words
A composition according to claim 1 wherein the solubilizer has a molecular weight of less than 1,200.
Claim 14
Dependent Claim
15 words
A composition according to claim 12 wherein the solubilizer is a non-ionic surfactant or hydrotrope.
Claim 15
Dependent Claim
43 words
A composition according to claim 13 wherein the solubilizing agent is a polyalkylene oxide having 2 to 25 oxyalkylene units or a polyoxyalkylene condensate with a fatty alcohol or alkyl phenol or with a glycerol or sorbitol ester or with a fatty acid,
Claim 16
Dependent Claim
21 words
A composition according to claim 13 wherein the solubilizing agent is hydroxyethyl acetate, methyl hydroxy-ethyl ketone, methyl hydroxyethyl ether or propanediol.
Claim 17
Dependent Claim
14 words
A composition according to claim 13 wherein the solubilizing agent is a cationic surfactant.
Claim 18
Dependent Claim
35 words
A composition according to claim 1, 12 or 14 wherein the solubilizer is present in a proportion of from 4 to 200 mole percent based on the amount of monomer used to prepare the polymer.
Claim 19
Dependent Claim
16 words
A composition according to claim 1, 12 or 14 wherein the active ingredient comprises a fragrance.
Claim 20
Dependent Claim
17 words
A composition according to claim 1, 12 or 14 wherein the active ingredient comprises a volatile insecticide.
Claim 21
Dependent Claim
33 words
A composition according to claim 1, 12 or 14 wherein the active ingredient is present in a proportion of 2.5% to 100% based on the weight of monomer used to prepare the polymer.
Claim 22
Dependent Claim
29 words
A composition according to claim 1, 12 or 14 con-taining between 1 and 40% by weight of water based on the weight of monomer used to prepare the polymer.
Claim 23
Dependent Claim
81 words
A composition according to claim 1 containing 50% of hydroxyl groups or equivalent hydrophilic functionality based on the molar proportion of monomer and wherein the monomers used to form the polymer comprise hydroxyethyl, hydroxypropyl, hydroxybutyl and/or glyceryl esters of acrylic and/or methacrylic acids and wherein the solubilizing agent is a polyalkylene oxide having 2 to 25 oxyalkylene units or a polyoxyalkylene condensate with a fatty alcohol or alkyl phenol or with a glycerol or sorbitol ester or with a fatty acid.
Claim 24
Dependent Claim
77 words
A composition according to claim 1 containing at least 50% of hydroxyl groups or equivalent hydrophilic functionality based on the molar proportion of monomer and wherein the monomers used to form the polymer comprise hydroxyethyl, hydroxypropyl, hydroxybutyl and/or glyceryl esters of acrylic and/or methacrylic acids, wherein the monomers comprise a proportion of monomers having at least 2 vinylic functions and at least 50% of hydroxyl groups or equivalent hydrophilic functionality based on the molar proportion of monomer.
Claim 25
Dependent Claim
17 words
A composition as claimed in claim 1, 12 or 14 wherein the solubilizing agent is substantially involatile.
References Cited (Backward Citations)
No citation records indexed.
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