US4724240A
Expired / Lapsed
US
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Lattice-entrapped emollient-moisturizer composition
Assignee: Certis USA LLC
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Filing: 1984-12-12
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Granted: 1988-02-09
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Expires: 2004-12-12
Abstract
Abstract This invention relates to solid emollient-moisturizer compositions, and in particular relates to compositions wherein an emollient-moisturizer is entrapped in the lattice of the cross-linked polymer during in situ polymerization of the monomers forming the polymer lattice. The invention provides for conversion of solid and/or liquid emollients or moisturizers into solid, free-flowing forms by entrapment of the functional materials in a hydrophobic polymer lattice.
Inventors
- 👤 Eric S. Abrutyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:10
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/361; A61K8/34; A61K8/342; A61K8/37; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; A61K8/84; A61K8/86; A61K8/92; A61K8/925; A61Q; A61Q1/00; A61Q1/12; A61Q13/00; A61Q15/00; A61Q19/00; A61Q19/10; A61K2800/00; A61K2800/40; A61K2800/56; Y; Y10; Y10S; Y10S424/00; Y10S424/05; Y10S424/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
66 words
A solid, lattice-entrapped emollient or moisturizer composition comprising: from approximately 5% to approximately 95% by weight of a cross-linked syneresis-free hydrophobic polymer lattice; from approximately 95% to about 5% by weight of an emollient or moisturizer; the monomers of said cross-linked copolymer and said emollient or moisturizer being polymerized in situ; and said emollient or moisturizer being dispersed uniformly throughout and entrapped within said polymer lattice.
Claim 2
Dependent Claim
66 words
A solid, lattice-entrapped emollient or moisturizer composition comprising: from approximately 5% to approximately 95% by weight of a cross-linked syneresis-free hydrophobic polymer lattice; from approximately 95% to about 5% by weight of an emollient or moisturizer; the monomers of said cross-linked copolymer and said emollient or moisturizer being polymerized in situ; and said emollient or moisturizer being dispersed uniformly throughout and entrapped within said polymer lattice.
Claim 3
Dependent Claim
111 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 1, wherein said emollient or moisturizer is selected from the group consisting of: a straight, branched or cyclic hydroxyl alcohol containing 1 to 30 carbon atoms; a straight, branched or cyclic carboxylic acid containing 1 to 30 carbon atoms; an acid ester containing C 1 to C 30 carboxylic acid esterified with a C 1 to C 30 hydroxyl alcohol; and a hydroxyl alcohol ether containing 1 to 30 carbon atoms; a carboxylic acid ether containing 1 to 30 carbon atoms; an alkane of the formula H--(CH 2 ) n --H wherein n is 5 to 30; lanolin and its derivatives.
Claim 4
Dependent Claim
54 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 1, wherein said cross-linked polymer matrix comprises: a functional cross-linking monomer selected from the group consisting of di- or polyfunctional monomers having at least two polymerizable double bonds; and a monofunctional monomer selected from the group consisting of polymerizable monomers having one double bond.
Claim 5
Dependent Claim
62 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 3, wherein said polyfunctional cross-linking monomer is a poly-unsaturated monomer selected from the group consisting of a mono- or di- or polyester of mono-, di-, or polyvalent alcohol, and alpha-beta unsaturated carboxylic acid, polyunsaturated polyvinyl ether of a polyvalent alcohol, mono- or polyunsaturated amides and cycloaliphatic esters of alpha-beta unsaturated carboxylic acids.
Claim 6
Dependent Claim
27 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 3, wherein said monofunctional monomer is selected from the group consisting of hydrophobic and hydrophylic monounsaturated monomers.
Claim 7
Dependent Claim
30 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 1, including a fragrance in the amount of about 10% to about 90% by weight of said emollient or moisturizer.
Claim 8
Dependent Claim
33 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 1, including an oil soluble cosmetic dye in an amount of about 0.1% to about 10% by weight of said emollient and/or moisturizer.
Claim 9
Dependent Claim
31 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 1, including a cosmetic pigment in an amount of about 0.1% to about 10% by weight of said emollient and/or moisturizer.
Claim 10
Dependent Claim
26 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 1, wherein said emollient or moisturizer is 2-ethylhexyl hydroxystearate which is entrapped in said polymer lattice.
Claim 11
Dependent Claim
19 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 1, wherein said emollient or moisturizer is mineral oil.
Claim 12
Dependent Claim
20 words
A lattice-entrapped emollient or moisturizer composition as claimed in claim 1, wherein arachidyl propionate is entrapped in said polymer lattice.
Claim 13
Dependent Claim
17 words
A lattice-entrapped functional material composition as claimed in claim 1, wherein said functional material is a siloxane.
Claim 14
Dependent Claim
32 words
A lattice-entrapped composition as claimed in claim 1, wherein a siloxane selected from the group consisting of polydimethyl siloxane, polytrimethyl siloxane, polyhexamethyl siloxane and polyphenylmethyl siloxane is entrapped in said polymer lattice.
Claim 15
Dependent Claim
187 words
A solid, lattice-entrapped cosmetic composition comprising: from approximately 5% to approximately 95% by weight of a cross-linked syneresis-free hydrophobic polymer lattice; from approximately 95% to about 5% by weight of a cosmetic substance; the monomers of said cross-linked copolymer and said cosmetic substance being polymerized in situ; and said cosmetic substance being entrapped and dispersed throughout and within said polymer lattice, said cosmetic substance comprising at least one emollient or moisturizer selected from the group consisting of: a straight, branched or cyclic hydroxyl alcohol containing 1 to 30 carbon atoms; a straight, branched or cyclic carboxylic acid containing 1 to 30 carbon atoms; an acid ester containing C 1 to CH 30 carboxylic acid esterified with a C 1 to C 30 hydroxyl alcohol; a hydroxyl alcohol ether containing 1 to 30 carbon atoms; a carboxylic acid ether containing 1 to 30 carbon atoms; an alkane of the formula H--(CH 2 ) n --H wherein n is 5 to 30 lanolin and its derivatives and a siloxane selected from the group consisting of hexamethyl disiloxane, cyclic polydimethyl siloxane, linear polydimethyl siloxane, poly phenylmethyl siloxane and polytrimethyl siloxane.
Claim 16
Dependent Claim
187 words
A solid, lattice-entrapped cosmetic composition comprising: from approximately 5% to approximately 95% by weight of a cross-linked syneresis-free hydrophobic polymer lattice; from approximately 95% to about 5% by weight of a cosmetic substance; the monomers of said cross-linked copolymer and said cosmetic substance being polymerized in situ; and said cosmetic substance being entrapped and dispersed throughout and within said polymer lattice, said cosmetic substance comprising at least one emollient or moisturizer selected from the group consisting of: a straight, branched or cyclic hydroxyl alcohol containing 1 to 30 carbon atoms; a straight, branched or cyclic carboxylic acid containing 1 to 30 carbon atoms; an acid ester containing C 1 to CH 30 carboxylic acid esterified with a C 1 to C 30 hydroxyl alcohol; a hydroxyl alcohol ether containing 1 to 30 carbon atoms; a carboxylic acid ether containing 1 to 30 carbon atoms; an alkane of the formula H--(CH 2 ) n --H wherein n is 5 to 30 lanolin and its derivatives and a siloxane selected from the group consisting of hexamethyl disiloxane, cyclic polydimethyl siloxane, linear polydimethyl siloxane, poly phenylmethyl siloxane and polytrimethyl siloxane.
Claim 17
Dependent Claim
21 words
The lattice-entrapped composition as claimed in claim 14 wherein said emollient and/or moisturizer are releasable from entrapment by pressure or extraction.
Claim 18
Dependent Claim
27 words
The lattice-entrapped composition as claimed in claim 14 wherein said emollient and/or moisturizer are releasable from entrapment by diffusion as a result of temperature and humidity changes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |