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US4532132A
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Skin care formulations comprising a water-in-mineral oil emulsion and siloxane compositions therefor
Assignee: Dow Silicones Corp
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Filing: 1983-04-11
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Granted: 1985-07-30
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Expires: 2003-04-11
Abstract
Abstract Organopolysiloxane-polyoxyalkylene block copolymers having a limited number of dimethylsiloxane units, at least one 6 to 16 carbon alkyl radical and at least one polyoxyalkylene radical are good emulsifiers for preparing water-in-mineral oil emulsions if the polyoxyalkylene radicals do not account for more than 1/3 of the molecular weight of the block copolymer. The block copolymers are readily dispersible or dissolvable in mineral oil to which a personal care component can be added. Personal care emulsion compositions can then be prepared by emulsifying an aqueous phase into the mineral oil phase.
Inventors
- 👤 Joseph W. Keil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:22
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/89; A61K8/891; A61K8/894; A61K8/02; A61K8/04; A61K8/06; A61K8/064; A61P; A61P17/00; A61Q; A61Q19/00; C; C08; C08G; C08G77/00; C08G77/42; C08G77/46; C08L; C08L83/00; C08L83/10; C08L83/12
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
193 words
An organopolysiloxane having the formula Z(CH.sub.3).sub.2 SiO{(CH.sub.3).sub.2 SiO}.sub.x {CH.sub.3)(R)SiO}.sub.y {CH.sub.3)(QR')SiO}.sub.z Si(CH.sub.3).sub.2 Z wherein QR' denotes a polyoxyalkylene radical consisting of a Q portion having the formula --(OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OR" and an R' portion linking the Q portion to a silicon atom, R denotes an alkyl radical having from 6 to 16 carbon atoms, R' denotes an alkylene linking radical, R" denotes a hydrogen atom or a lower alkyl radical, Z denotes a monovalent radical selected from the group consisting of hydrocarbon radicals having from 1 to 5 carbon atoms, QR' radicals and R radicals, there being an average of at least one QR'--radical and an average of at least one R radical per molecule of organopolysiloxane and the average values of x, y, z, p and q being such that p≧q, p+q has a value sufficient to provide a radical weight for Q of from 600 to 3500, x≦3y, x+y+z has a value of from 30 to 400 and the total weight of Q radicals in the organopolysiloxane does not exceed a value of about 1/3 of the total weight of the organopolysiloxane.
Claim 2
Dependent Claim
193 words
An organopolysiloxane having the formula Z(CH.sub.3).sub.2 SiO{(CH.sub.3).sub.2 SiO}.sub.x {CH.sub.3)(R)SiO}.sub.y {CH.sub.3)(QR')SiO}.sub.z Si(CH.sub.3).sub.2 Z wherein QR' denotes a polyoxyalkylene radical consisting of a Q portion having the formula --(OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OR" and an R' portion linking the Q portion to a silicon atom, R denotes an alkyl radical having from 6 to 16 carbon atoms, R' denotes an alkylene linking radical, R" denotes a hydrogen atom or a lower alkyl radical, Z denotes a monovalent radical selected from the group consisting of hydrocarbon radicals having from 1 to 5 carbon atoms, QR' radicals and R radicals, there being an average of at least one QR'--radical and an average of at least one R radical per molecule of organopolysiloxane and the average values of x, y, z, p and q being such that p≧q, p+q has a value sufficient to provide a radical weight for Q of from 600 to 3500, x≦3y, x+y+z has a value of from 30 to 400 and the total weight of Q radicals in the organopolysiloxane does not exceed a value of about 1/3 of the total weight of the organopolysiloxane.
Claim 3
Dependent Claim
31 words
An organopolysiloxane according to claim 1 wherein Z denotes the methyl radical, x has a value of zero and y+z has an average value of from about 30 to about 70.
Claim 4
Dependent Claim
40 words
An organopolysiloxane according to claim 2 wherein z has a value of from about 1 to about 3 and QR' denotes --CH 2 CH 2 CH 2 (OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OH.
Claim 5
Dependent Claim
12 words
An organopolysiloxane according to claim 3 wherein R denotes the dodecyl radical.
Claim 6
Dependent Claim
37 words
An organopolysiloxane according to claim 1 wherein x has an average value of from about 1 to about 100, y+z has an average value of from about 30 to about 70 and Z denotes the methyl radical.
Claim 7
Dependent Claim
40 words
An organopolysiloxane according to claim 5 wherein z has a value of from about 1 to about 3 and QR' denotes --CH 2 CH 2 CH 2 (OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OH.
Claim 8
Dependent Claim
12 words
An organopolysiloxane according to claim 6 wherein R denotes the dodecyl radical.
Claim 9
Dependent Claim
201 words
A homogeneous composition comprising (A) an organopolysiloxane having the formula Z(CH.sub.3).sub.2 SiO{(CH.sub.3).sub.2 SiO}.sub.x {(CH.sub.3)(R)SiO}.sub.y {(CH.sub.3)(QR')SiO}.sub.y Si(CH.sub.3).sub.2 Z wherein QR' denotes a polyoxyalkylene radical consisting of a Q portion having the formula --(OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OR" and an R' portion linking the Q portion to a silicon atom, R denotes an alkyl radical having from 6 to 16 carbon atoms, R' denotes an alkylene linking radical, R" denotes a hydrogen atom or a lower alkyl radical, Z denotes a monovalent radical selected from the group consisting of hydrocarbon radicals having from 1 to 5 carbon atoms, QR'--radicals and R radicals, there being an average of at least one QR'--radical and an average of at least one R radical per molecule of organopolysiloxane and the average values of x, y, z, p and q being such that p≧q, p+q has a value sufficient to provide a radical weight of Q of from 600 to 3500, x≦3y, x+y+z has a value of from 30 to 400 and the total weight of Q radicals in the organopolysiloxane does not exceed a value of about 1/3 of the total weight of the organopolysiloxane, and (B) mineral oil.
Claim 10
Dependent Claim
201 words
A homogeneous composition comprising (A) an organopolysiloxane having the formula Z(CH.sub.3).sub.2 SiO{(CH.sub.3).sub.2 SiO}.sub.x {(CH.sub.3)(R)SiO}.sub.y {(CH.sub.3)(QR')SiO}.sub.y Si(CH.sub.3).sub.2 Z wherein QR' denotes a polyoxyalkylene radical consisting of a Q portion having the formula --(OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OR" and an R' portion linking the Q portion to a silicon atom, R denotes an alkyl radical having from 6 to 16 carbon atoms, R' denotes an alkylene linking radical, R" denotes a hydrogen atom or a lower alkyl radical, Z denotes a monovalent radical selected from the group consisting of hydrocarbon radicals having from 1 to 5 carbon atoms, QR'--radicals and R radicals, there being an average of at least one QR'--radical and an average of at least one R radical per molecule of organopolysiloxane and the average values of x, y, z, p and q being such that p≧q, p+q has a value sufficient to provide a radical weight of Q of from 600 to 3500, x≦3y, x+y+z has a value of from 30 to 400 and the total weight of Q radicals in the organopolysiloxane does not exceed a value of about 1/3 of the total weight of the organopolysiloxane, and (B) mineral oil.
Claim 11
Dependent Claim
31 words
A composition according to claim 8 wherein Z denotes the methyl radical, x has a value of zero and y+z has an average value of from about 30 to about 70.
Claim 12
Dependent Claim
40 words
A composition according to claim 9 wherein z has a value of from about 1 to about 3 and QR' denotes --CH 2 CH 2 CH 2 (OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OH.
Claim 13
Dependent Claim
12 words
A composition according to claim 10 wherein R denotes the dodecyl radical.
Claim 14
Dependent Claim
37 words
A composition according to claim 8 wherein x has an average value of from about 1 to about 100, y+z has an average value of from about 30 to about 70 and Z denotes the methyl radical.
Claim 15
Dependent Claim
40 words
A composition according to claim 12 wherein z has a value of from about 1 to about 3 and QR' denotes --CH 2 CH 2 CH 2 (OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OH.
Claim 16
Dependent Claim
12 words
A composition according to claim 13 wherein R denotes the dodecyl radical.
Claim 17
Dependent Claim
220 words
An emulsion composition comprising (I) a dispersed phase comprising water and a cosmetically acceptable electrolyte dissolved therein, (II) a cosmetically acceptable continuous phase comprising mineral oil, and (III) an organopolysiloxane having the formula Z(CH.sub.3).sub.2 SiO{(CH.sub.3).sub.2 SiO}.sub.x {(CH.sub.3)(R)SiO}.sub.y {(CH.sub.3)(QR')SiO}.sub.z Si(CH.sub.3).sub.2 Z wherein QR' denotes a polyoxyalkylene radical consisting of a Q portion having the formula --(OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OR" and an R' portion linking the Q portion to a silicon atom, R denotes an alkyl radical having from 6 to 16 carbon atoms, R' denotes an alkylene linking radical, R" denotes a hydrogen atom or a lower alkyl radical, Z denotes a monovalent radical selected from the group consisting of hydrocarbon radicals having from 1 to 5 carbon atoms, QR'--radicals and R radicals, there being an average of at least one QR'--radical and an average of at least one R radical per molecule of organopolysiloxane and the average values of x, y, z, p and q being such that p≧q, p+q has a value sufficient to provide a radical weight for Q of from 600 to 3500, x≦3y, x+y+z has a value of from 30 to 400 and the total weight of Q radicals in the organopolysiloxane does not exceed a value of about 1/3 of the total weight of the organopolysiloxane.
Claim 18
Dependent Claim
220 words
An emulsion composition comprising (I) a dispersed phase comprising water and a cosmetically acceptable electrolyte dissolved therein, (II) a cosmetically acceptable continuous phase comprising mineral oil, and (III) an organopolysiloxane having the formula Z(CH.sub.3).sub.2 SiO{(CH.sub.3).sub.2 SiO}.sub.x {(CH.sub.3)(R)SiO}.sub.y {(CH.sub.3)(QR')SiO}.sub.z Si(CH.sub.3).sub.2 Z wherein QR' denotes a polyoxyalkylene radical consisting of a Q portion having the formula --(OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OR" and an R' portion linking the Q portion to a silicon atom, R denotes an alkyl radical having from 6 to 16 carbon atoms, R' denotes an alkylene linking radical, R" denotes a hydrogen atom or a lower alkyl radical, Z denotes a monovalent radical selected from the group consisting of hydrocarbon radicals having from 1 to 5 carbon atoms, QR'--radicals and R radicals, there being an average of at least one QR'--radical and an average of at least one R radical per molecule of organopolysiloxane and the average values of x, y, z, p and q being such that p≧q, p+q has a value sufficient to provide a radical weight for Q of from 600 to 3500, x≦3y, x+y+z has a value of from 30 to 400 and the total weight of Q radicals in the organopolysiloxane does not exceed a value of about 1/3 of the total weight of the organopolysiloxane.
Claim 19
Dependent Claim
32 words
An emulsion composition according to claim 15 wherein Z denotes the methyl radical, x has a value of zero and y+z has an average value of from about 30 to about 70.
Claim 20
Dependent Claim
41 words
An emulsion composition according to claim 16 wherein z has a value of from about 1 to about 3 and QR' denotes --CH 2 CH 2 CH 2 (OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OH.
Claim 21
Dependent Claim
13 words
An emulsion composition according to claim 17 wherein R denotes the dodecyl radical.
Claim 22
Dependent Claim
38 words
An emulsion composition according to claim 15 wherein x has an average value of from about 1 to about 100, y+z has an average value of from about 30 to about 70 and Z denotes the methyl radical.
Claim 23
Dependent Claim
41 words
An emulsion composition according to claim 19 wherein z has a value of from about 1 to about 3 and QR' denotes --CH 2 CH 2 CH 2 (OCH 2 CH 2 ) p (OCHCH 3 CH 2 ) q OH.
Claim 24
Dependent Claim
13 words
An emulsion composition according to claim 20 wherein R denotes the dodecyl radical.
Claim 25
Dependent Claim
21 words
An emulsion composition according to claim 18 further comprising a silicon-free nonionic surfactant having an H.L.B. value of up to 10.
Claim 26
Dependent Claim
21 words
An emulsion composition according to claim 21 further comprising a silicon-free nonionic siurfactant having an H.L.B. value of up to 10.
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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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |