Silane copolymer and a method for producing the same
US6228968A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1999 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Feb 5, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A silane copolymer is described which is usable, for example, as an ingredient of cosmetics for skin, hair or the like; obtainable by polycondensing one or more organic silane compounds having a hydrophilic group represented by the following general formula (I): EQU R.sup.1.sub.(3-m) Si(OH).sub.m A--B (I) wherein m represents 2 or 3, R.sup.1 represents an alkoxy group, a hydrogen atom or an alkyl group, A is a connecting moiety and represents a methylene group or the like, and B represents a hydrophilic organic group with one or more silane compounds represented by the following general formula (III): EQU R.sup.2.sub.n Si(OH).sub.p Y.sub.(4-p-n) (III) wherein n represents an integer from 0 to 2, p represents an integer from 2 to 4, n+p.ltoreq.4, R.sup.2 represents an organic group in which a carbon atom is directly connected to the silicon atom, and Y represent at least one group selected from the group consisting of an alkoxy group, hydrogen atom and siloxy group and when 4-p-n is 2; and optionally further reacting the resulting copolymer with one or more silane compounds represented by the following general formula (V): EQU R.sup.3.sub.3 Si(OH) (V) wherein, R.sup.3 represent an o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.