IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0471699
(2002-03-12)
|
등록번호 |
US-7517534
(2009-07-01)
|
우선권정보 |
JP-2001-76600(2001-03-16); JP-2001-361255(2001-11-27) |
국제출원번호 |
PCT/JP02/002291
(2002-03-12)
|
§371/§102 date |
20030915
(20030915)
|
국제공개번호 |
WO02/074261
(2002-09-26)
|
발명자
/ 주소 |
- Nishizaka, Takahiro
- Ihara, Takeshi
- Kitsuki, Tomohito
|
출원인 / 주소 |
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
3 |
초록
▼
A process for the preparation of an o/w emulsion, which comprises mixing together a high molecular compound carrying at least on side chains thereof groups represented by the following formula (1): --(OX)n-E2-R (1) wherein n "X"s may be the same or different and each independently represents a lin
A process for the preparation of an o/w emulsion, which comprises mixing together a high molecular compound carrying at least on side chains thereof groups represented by the following formula (1): --(OX)n-E2-R (1) wherein n "X"s may be the same or different and each independently represents a linear or branched, divalent, saturated C1-6 hydrocarbon group, n stands for a number of from 5 to 300, E2 represents an ether bond or an oxycarbonyl group (--OCO--or--COO--), and R represents a linear or branched, C4-30 alkyl group which may be substituted by hydroxyl group(s), an aqueous solution of a water-soluble polyol, and a hydrophobic compound, and diluting a resulting mixture with water, and the o/w emulsion obtained by the preparation process. The emulsion according to the present invention is excellent in touch feeling to the skin and is good in stability.
대표청구항
▼
The invention claimed is: 1. A process for the preparation of an o/w emulsion, which comprises: mixing together a high molecular weight compound, an aqueous solution of a water-soluble polyol, and a hydrophobic compound, and diluting the resulting mixture with water; wherein said high molecular wei
The invention claimed is: 1. A process for the preparation of an o/w emulsion, which comprises: mixing together a high molecular weight compound, an aqueous solution of a water-soluble polyol, and a hydrophobic compound, and diluting the resulting mixture with water; wherein said high molecular weight compound carrying at least on side chains thereof is a group represented by the following formula (1): --(OX)n-E2-R (1) wherein said high molecular weight compound is a synthetic, water-soluble, compound having a molecular weight of from 10,000 to 2,000,000, wherein OX of formula (1) is an ethylene oxide (EO) group, E2 represents an ether bond or an oxycarbonyl group (--OCO--or--COO--), n is a number of 5 to 200, and R is a linear or branched C4-30 hydrophobic group having 5 to 200 EO linkages added at a rate of from 0.0001 to 0.1 group per backbone monomer, wherein said high molecular weight compound being obtained by: (i) copolymerizing a water-soluble monomer of the following formula (5) or formula (6) with a water-soluble monomer having a C4-30 hydrophobic group bonded via 5 to 200 EO linkages as defined by the following formula (7): wherein R5, R6 and R7 are the same or different and each independently represents a hydrogen atom or a methyl group, and X stands for a number of from 2 to 100, wherein R8 and R9 are the same or different and each independently represents a hydrogen atom or a methyl group, R10 and R11 each independently represents a methyl group or an ethyl group, n stands for an integer of 0 or 2 to 5, and Z represents an NH group, an oxygen atom, or connecting bond, and wherein R12 and R13 are the same or different and each independently represents a hydrogen atom or a methyl group, y stands for a number of 5 to 200, and R14 represents a linear or branched C8-30 alkyl group optionally substituted by hydroxyl group(s). 2. The process according to claim 1 for the preparation of an o/w emulsion, wherein: (a) 1 part by weight of said high molecular weight compound, (b) 2 to 50 parts by weight of one or more aqueous solutions of water-soluble polyols, (c) 5 to 30 parts by weight of water, and (d) 0.01 to 70 parts by weight of said hydrophobic compound are mixed to obtain a composition (1), and said composition is then diluted wit water. 3. The process according to claim 2 for the preparation of an o/w emulsion, wherein a weight ratio of said water-soluble polyols to said water in said composition (1) is from 10/90 to 99/1. 4. The process according to claim 2 for the preparation of an o/w emulsion, wherein said water-soluble polyols and water or said aqueous solutions of said water-soluble polyols are added to and mixed with a mixture of said high molecular weight compound and said hydrophobic compound to obtain said composition (1), and said composition (1) is then diluted with water. 5. The process according to claim 2 for the preparation of an o/w emulsion, wherein subsequent to mixing of said high molecular weight compound, said water-soluble polyols and water or mixing of said high molecular weight compound and said aqueous solutions of said water-soluble polyols, said hydrophobic compound is added and mixed to obtain said composition (1), and said composition (1) is then diluted with water.
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