WO1997038041B1 - Polymeres siloxane a greffage en forme d'etoile, poudres ceramiques enrobees avec lesdits polymeres et procede de fabrication de poudres ceramiques enrobees - Google Patents
Polymeres siloxane a greffage en forme d'etoile, poudres ceramiques enrobees avec lesdits polymeres et procede de fabrication de poudres ceramiques enrobeesInfo
- Publication number
- WO1997038041B1 WO1997038041B1 PCT/US1997/005179 US9705179W WO9738041B1 WO 1997038041 B1 WO1997038041 B1 WO 1997038041B1 US 9705179 W US9705179 W US 9705179W WO 9738041 B1 WO9738041 B1 WO 9738041B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ceramic powder
- coated
- ceramic
- siloxane
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Abstract
Poudre céramique enrobée comprenant plusieurs particules céramiques et un polymère d'enrobage siloxane avec greffage en forme d'étoile et enrobant au moins une partie des particules. Le polymère d'enrobage comprend Si (w, x, y, z), w, x, y et z étant respectivement des unités monomères tétrafonctionnelles, trifonctionnelles, bifonctionnelles et monofonctionnelles à pourcentage molaire, w étant d'environ 20 à 100, x d'environ 0 à 30, y d'environ 0 à 50 et z d'environ 0 à 10, et au moins une unité parmi w, x, y et z étant supérieure à zéro. Le procédé de fabrication d'une poudre céramique enrobée comprend les stades suivants: (a) polymérisation d'un monomère tétrafonctionnel du siloxane et d'au moins un monomère trifonctionnel, bifonctionnel et monofonctionnel du siloxane, (b) ajout d'une certaine quantité de poudre céramique dans la cuve à réaction, (c) mélangeage cisaillé de la poudre céramique pendant un laps de temps suffisant pour humecter de façon substantielle toute la surface de la poudre, (d) ajout du polymère du siloxane préparé au stade (a) dans la cuve à réaction contenant de la poudre mélangée avec cisaillement, (e) mélangeage cisaillé de la poudre céramique mélangée avec cisaillement et du polymère du siloxane pendant un laps de temps suffisant pour former une poudre céramique enrobée de polymère de siloxane et (f) séparation de la poudre céramique enrobée des composants résiduels dans la cuve à réaction.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU24271/97A AU715859B2 (en) | 1996-04-04 | 1997-03-28 | Siloxane star-graft polymers, ceramic powders coated therewith and method of preparing coated ceramic powders |
| EP97919963A EP0891387B1 (fr) | 1996-04-04 | 1997-03-28 | Polymeres siloxane a greffage en forme d'etoile, poudres ceramiques enrobees avec lesdits polymeres et procede de fabrication de poudres ceramiques enrobees |
| JP9536259A JP2000508684A (ja) | 1996-04-04 | 1997-03-28 | シロキサン星形グラフトポリマー、それによりコーティングされたセラミック粉末、及びコーティングされたセラミック粉末を調製する方法 |
| CA002250962A CA2250962C (fr) | 1996-04-04 | 1997-03-28 | Polymeres siloxane a greffage en forme d'etoile, poudres ceramiques enrobees avec lesdits polymeres et procede de fabrication de poudres ceramiques enrobees |
| DE69729290T DE69729290T2 (de) | 1996-04-04 | 1997-03-28 | Sternförmig-gepfropfte siloxanpolymere, damit beschichtete keramikpulver, sowie ein verfahren zu deren herstellung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1483896P | 1996-04-04 | 1996-04-04 | |
| US60/014,838 | 1996-04-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1997038041A1 WO1997038041A1 (fr) | 1997-10-16 |
| WO1997038041B1 true WO1997038041B1 (fr) | 1997-11-06 |
Family
ID=21768045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/005179 Ceased WO1997038041A1 (fr) | 1996-04-04 | 1997-03-28 | Polymeres siloxane a greffage en forme d'etoile, poudres ceramiques enrobees avec lesdits polymeres et procede de fabrication de poudres ceramiques enrobees |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6033781A (fr) |
| EP (1) | EP0891387B1 (fr) |
| JP (2) | JP2000508684A (fr) |
| AU (1) | AU715859B2 (fr) |
| CA (1) | CA2250962C (fr) |
| DE (1) | DE69729290T2 (fr) |
| WO (1) | WO1997038041A1 (fr) |
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| US10212825B2 (en) | 2016-03-03 | 2019-02-19 | Motorola Mobility Llc | Polysiloxane films and methods of making polysiloxane films |
| US10351729B2 (en) | 2016-03-03 | 2019-07-16 | Motorola Mobility Llc | Polysiloxane films and methods of making polysiloxane films |
| US10555892B1 (en) | 2017-03-09 | 2020-02-11 | Nanophase Technologies Corporation | Functionalized siloxane or polysiloxane coated particles with enhanced light filtering properties |
| US10590278B2 (en) * | 2017-04-10 | 2020-03-17 | Nanophase Technologies Corporation | Coated powders having high photostability |
| US11672744B2 (en) | 2020-07-02 | 2023-06-13 | Nanophase Technologies Corporation | Zinc oxide particles, photostable UV filters, and methods of use thereof |
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-
1997
- 1997-03-28 JP JP9536259A patent/JP2000508684A/ja not_active Withdrawn
- 1997-03-28 DE DE69729290T patent/DE69729290T2/de not_active Expired - Lifetime
- 1997-03-28 US US08/827,229 patent/US6033781A/en not_active Expired - Lifetime
- 1997-03-28 CA CA002250962A patent/CA2250962C/fr not_active Expired - Lifetime
- 1997-03-28 AU AU24271/97A patent/AU715859B2/en not_active Expired
- 1997-03-28 WO PCT/US1997/005179 patent/WO1997038041A1/fr not_active Ceased
- 1997-03-28 EP EP97919963A patent/EP0891387B1/fr not_active Expired - Lifetime
-
2006
- 2006-09-13 JP JP2006248645A patent/JP2007092063A/ja active Pending
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