US4552693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent fragrance emitting articles
Assignee: Avon Products Inc
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Filing: 1983-03-30
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Granted: 1985-11-12
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Expires: 2003-03-30
Abstract
Abstract Transparent fragrance-emitting articles, formed from a composition which has a relatively low set point and comprises a thermoplastic polyamide resin plasticizer system, are disclosed. The plasticizer system comprises a sulfonamide and mineral oil which have been titrated to clarity with a solvent for both the oil and sulfonamide. A fragrance-emitting article may be made by blending the polyamide with the plasticizer system, adding fragrance to the blend while at a temperature below 120 DEG C. and then rotational or shell molding to form the fragrance-emitting article.
Inventors
- 👤 Zahera J. Hussain
- 👤 Ronald D. Zukoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/042
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
135 words
A composition for forming a solid transparent fragrance-emitting article comprising an admixture of (a) 60 to 65 weight percent of a thermoplastic polyamide resin, having an average molecular weight of 5,000 to 15,000 which is formed by reaction of a polycarboxylic acid of the formula R(COOH)x wherein R is a hydrocarbon group having 20 to 44 carbon s and x is 2 or more, with a polyamine; (b) said resin being homogeneously blended with 20 to 30 weight percent of a clear plasticizer/solvent system comprising a sulfonamide plasticizer, a gellant and a cosolvent for the plasticizer and the gellant, the solubility parameter of the polyamide resin and plasticizer system being compatible; and (c) up to 15 weight percent of a fragrance oil, said composition being clear, homogeneous, and fluid at a temperature below 120° C.
Claim 2
Dependent Claim
135 words
A composition for forming a solid transparent fragrance-emitting article comprising an admixture of (a) 60 to 65 weight percent of a thermoplastic polyamide resin, having an average molecular weight of 5,000 to 15,000 which is formed by reaction of a polycarboxylic acid of the formula R(COOH)x wherein R is a hydrocarbon group having 20 to 44 carbon s and x is 2 or more, with a polyamine; (b) said resin being homogeneously blended with 20 to 30 weight percent of a clear plasticizer/solvent system comprising a sulfonamide plasticizer, a gellant and a cosolvent for the plasticizer and the gellant, the solubility parameter of the polyamide resin and plasticizer system being compatible; and (c) up to 15 weight percent of a fragrance oil, said composition being clear, homogeneous, and fluid at a temperature below 120° C.
Claim 3
Dependent Claim
15 words
The composition of claim 1 wherein the polyamide resin is formed from linoleic acid dimer.
Claim 4
Dependent Claim
12 words
The composition of claim 1 wherein the polyamine is an ethylene polyamine.
Claim 5
Dependent Claim
10 words
The composition of claim 1 wherein the polyamine is diethylenetriamine.
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein the gellant is mineral oil.
Claim 7
Dependent Claim
11 words
The composition of claim 1 wherein the plasticizer is N-ethyl,o-,p-toluene sulphonamide.
Claim 8
Dependent Claim
36 words
The composition of claim 1 wherein the cosolvent is a long chain alkyl phenol ethoxylate the alkyl chain having 9 to 18 carbons and the degree of ethoxylation being 1 to 3 moles of ethylene oxide.
Claim 9
Dependent Claim
12 words
The composition of claim 1 wherein the cosolvent is nonyl phenol ethoxylate.
Claim 10
Dependent Claim
23 words
The composition of claim 1 wherein 7 to 9 parts by weight polyamide resin are used for each part by weight of plasticizer.
Claim 11
Dependent Claim
23 words
The composition of claim 1 wherein 13 to 18 parts by weight polyamide resin are used for each part by weight of gellant.
Claim 12
Dependent Claim
21 words
The composition of claim 1 wherein 2 parts by weight of gellant are used for each part by weight of plasticizer.
Claim 13
Dependent Claim
87 words
The composition of claim 1 comprising: (a) 60-65 weight percent polyamide resin having an average molecular weight of 8,000-12,000 formed by reaction of linoleic acid dimer and diethylene triamine; (b) 20 to 30 weight percent a clear plasticizer/solvent system comprising 1 part by weight N-ethyl,o-,p-toluene sulfonamide, 2 parts by weight mineral oil and nonyl phenol ethoxylate (1.5 moles EO) in an amount sufficient to make the system clear; and (c) a fragrance oil in an amount equal to no more than 15 weight percent of the composition.
Claim 14
Dependent Claim
162 words
A transparent fragrance-emitting article comprising a solid gel formed by (a) admixing until homogeneous at a temperature at which the mixture is fluid (i) 60 to 65 parts by weight of a polyamine resin, which has an average molecular weight of 5,000 to 15,000 and is formed by reaction of a polycarboxylic acid of the formula R(COOH)x wherein R is a hydrocarbon group having 20 to 44 carbons and x is 2 or more, with a polyanide, and (ii) 20 to 30 parts by weight of a plasticizer/solvent system comprising 2 parts by weight of a gellant, 1 part by weight of a sulfonamide plasticizer and sufficient cosolvent for the gellant and plasticizer to render the plasticizer/solvent system clear; (b) cooling the admixture of resin and plasticizer/solvent system admixture to a temperature above the admixture's set point, but below about 120° C.; (c) adding up to 15 weight percent of fragrance oil to the cooled admixture; and (d) molding the resulting product.
Claim 15
Dependent Claim
162 words
A transparent fragrance-emitting article comprising a solid gel formed by (a) admixing until homogeneous at a temperature at which the mixture is fluid (i) 60 to 65 parts by weight of a polyamine resin, which has an average molecular weight of 5,000 to 15,000 and is formed by reaction of a polycarboxylic acid of the formula R(COOH)x wherein R is a hydrocarbon group having 20 to 44 carbons and x is 2 or more, with a polyanide, and (ii) 20 to 30 parts by weight of a plasticizer/solvent system comprising 2 parts by weight of a gellant, 1 part by weight of a sulfonamide plasticizer and sufficient cosolvent for the gellant and plasticizer to render the plasticizer/solvent system clear; (b) cooling the admixture of resin and plasticizer/solvent system admixture to a temperature above the admixture's set point, but below about 120° C.; (c) adding up to 15 weight percent of fragrance oil to the cooled admixture; and (d) molding the resulting product.
Claim 16
Dependent Claim
25 words
The article of claim 13 wherein the polyamide resin and the plasticizer/solvent system are admixed at a temperature of about 120° C. to 146° C.
Claim 17
Dependent Claim
13 words
The article of claim 13 wherein the product is molded by rotational molding.
Claim 18
Dependent Claim
11 words
The article of claim 13 wherein the product is shell molded.
Claim 19
Independent Claim
165 words
A method for forming a solid transparent fragrance-emitting article, while minimizing fragrance losses, comprising: (a) mixing until homogenous at a temperature at which the mixture is fluid (i) 60 to 65 parts by weight of a thermoplastic polyamide resin, having an average molecular weight of 5,000 to 15,000 which is formed by reaction of a polycarboxylic acid of the formula R(COOH)x wherein R is a hydrocarbon group having 20 to 44 carbons and x is 2 or more, with a polyamine, (ii) with 20 to 30 parts by weight of a clear plasticizer/solvent system comprising a sulfonamide plasticizer, a gellant and a cosolvent for the plasticizer and the gellant, the solubility parameter of the polyamide resin and plasticizer system being compatible; and (b) cooling the homogeneous mixture to a temperature below 120° C. but above the mixture's set point (c) adding up to 15 weight percent of warmed fragrance oil to the cooled mixture and blending until homogeneous; and (d) molding the resultant homogeneous blend.
Claim 20
Independent Claim
165 words
A method for forming a solid transparent fragrance-emitting article, while minimizing fragrance losses, comprising: (a) mixing until homogenous at a temperature at which the mixture is fluid (i) 60 to 65 parts by weight of a thermoplastic polyamide resin, having an average molecular weight of 5,000 to 15,000 which is formed by reaction of a polycarboxylic acid of the formula R(COOH)x wherein R is a hydrocarbon group having 20 to 44 carbons and x is 2 or more, with a polyamine, (ii) with 20 to 30 parts by weight of a clear plasticizer/solvent system comprising a sulfonamide plasticizer, a gellant and a cosolvent for the plasticizer and the gellant, the solubility parameter of the polyamide resin and plasticizer system being compatible; and (b) cooling the homogeneous mixture to a temperature below 120° C. but above the mixture's set point (c) adding up to 15 weight percent of warmed fragrance oil to the cooled mixture and blending until homogeneous; and (d) molding the resultant homogeneous blend.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |