Microcapsule containing core material and method for producing the same
US6337089B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1999 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Feb 5, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q9/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A microcapsule containing core material and a capsule wall, in which the capsule wall of the microcapsule comprises:organopolysiloxane synthesized by polycondensing one or more compounds represented by the general formula (II):RnSi(OH)mY(4−m−n)  (II)wherein, m represents an integer from 1 to 4; n represents an integer from 0 to 3; m+n≦4; R represents an organic group in which a carbon atom is directly connected to a silicone atom, and when n is greater than 1, each of the R groups may be the same or different; and Y represents at least one group selected from the group consisting of an alkoxy group, hydrogen and siloxy group, and when (4−m−n) is greater than 1, each of the groups Y may be the same or different; provided that the compound (B) comprises at least one compound of formula(II) wherein m=2 or 3 and at least one of R group possesses affinity for at least one of a continuous phase and a dispersed phase;a method for producing the microcapsule; anda use of the microcapseile, for example for cosmetics are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.