Rare earth aggregate formulation using di-block copolmers
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08K-003/10
C08K-003/00
C08L-033/02
C08L-033/00
출원번호
US-0042647
(2005-01-25)
등록번호
US-7468413
(2008-12-23)
발명자
/ 주소
Yokota,Kazuhiko
Berret,Jean Francois
Tolla,Bruno
Morvan,Mikel
출원인 / 주소
Khodia Inc.
인용정보
피인용 횟수 :
10인용 특허 :
3
초록▼
The present invention is directed to controlling aggregation of rare earth particles using block copolymers and rare earth base particles. More particularly, invention is also directed to forming stable complexes of rare earth aggregates by complexing rare earth base particles with oppositely charge
The present invention is directed to controlling aggregation of rare earth particles using block copolymers and rare earth base particles. More particularly, invention is also directed to forming stable complexes of rare earth aggregates by complexing rare earth base particles with oppositely charged-neutral di-block copolymers. Even more particularly, invention is also directed to forming stable complexes of rare earth nanoparticles by complexing rare earth ultrafine particles with oppositely charged-neutral di-block copolymers.
대표청구항▼
The invention claimed is: 1. A method for controlling aggregation of rare earth base particles comprising: complexing cationic or anionic rare earth base particles with block copolymers consisting of two blocks, A and B, wherein block A is anionic if the particles are cationic, and block A is catio
The invention claimed is: 1. A method for controlling aggregation of rare earth base particles comprising: complexing cationic or anionic rare earth base particles with block copolymers consisting of two blocks, A and B, wherein block A is anionic if the particles are cationic, and block A is cationic if the particles are anionic, to form a stable complex of rare earth aggregates. 2. The method of claim 1 wherein block B is neutral. 3. The method of claim 1 wherein said rare earth base particles comprise rare earth base ultrafine particles. 4. The method of claim 3 wherein forming said stable complex or rare earth aggregates comprises controlling the size of said rare earth aggregates. 5. A method for controlling aggregation of rare earth base particles comprising: complexing cationic or anionic rare earth base particles with block copolymers comprising two blocks, A and B, wherein block A is anionic if the particles are cationic, and block A is cationic if the particles are anionic, to form a stable complex of rare earth aggregates wherein said rare earth base particles comprise yttrium hydroxyacetate particles. 6. The method of claim 5 wherein said block copolymers comprise oppositely charged poly(sodium acrylate)-b-poly(acrylamide) block copolymers. 7. A method of forming yttrium hydroxyacetate aggregates, comprising complexing a yttrium hydroxyacetate particle with oppositely charged poly(sodium acrylate)-b-poly(acrylamide) block copolymers (NaPA-b-PAM). 8. A method for polishing an article comprising applying a formulation comprising a rare earth base particle (a), being cationic or anionic; a block copolymer (b), comprising two blocks A and B, wherein block A is cationic if particle (a) is anionic, and anionic if particle (a) is cationic, and block B is neutral; and water to an article via chemical or mechanical deposition. 9. A method of stabilizing aggregates of rare base earth particles comprising the steps of: i) forming a cationic or anionic rare earth base particle; ii) forming a block copolymer (b), consisting of two blocks A and B, wherein block A is cationic if said rare earth base particle is anionic, and anionic if said particle is cationic, and block B is neutral; iii) contacting said rare earth base particle with said block copolymer. 10. A method of preparing a film comprising the steps of: i) preparing a first solution comprising: a rare earth base particle (a) being cationic or anionic, and a liquid; ii) preparing a second solution comprising: a block copolymer (b), consisting of two blocks A and B, wherein block A is cationic if particle (a) is anionic, and anionic if particle (a) is cationic, and block B is neutral; and a liquid: iii) contacting said first solution and said second solution to obtain aggregates of rare earth base particles in solution; and iv) drying said aggregates of rare earth base particles in solution to form a film. 11. A composition comprising a rare earth base nanoparticle, a block copolymer, wherein said block copolymer consists of two blocks A and B, block A being cationic if particle (a) is anionic, and anionic if particle (a) is cationic, and block B being neutral, and water. 12. A formulation comprising: a rare earth base particle (a), being cationic or anionic; a block copolymer (b), consists of two blocks A and B, wherein block A is cationic if particle (a) is anionic, and anionic if particle (a) is cationic, and block B is neutral; and water. 13. A method of preparing the formulation of claim 12 comprising the steps of: i) preparing a first solution comprising: said rare earth base particle (a), and water ii) preparing a second solution comprising: said block copolymer (b), and water; and iii) contacting said first solution and said second solution to obtain said formulation. 14. The method of claim 13 wherein said contacting comprises mixing. 15. The method of claim 14 wherein mixing is performed at a mixing ratio X, wherein and C0 is an initial concentration, and X is from about 0.01 to about 100.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (3)
Bavouzet, Bruno; Destarac, Mathias; Herve, Pascal; Taton, Daniel, Composition comprising a copolymer at least two charged blocks and type of opposite charge.
Schaeffer James R. (Penfield NY) Chen Tsang J. (Rochester NY) Schen Michael A. (Wellsville NY), Latex particles incorporating stabilized fluorescent rare earth labels.
Burba, III, John L.; Hassler, Carl R.; O'Kelley, C. Brock; Lupo, Joseph A.; Pascoe, Joseph R., Apparatus for treating a flow of an aqueous solution containing arsenic.
Chapel, Jean-Paul; Morvan, Mikel; Qi, Ling, Aqueous dispersions of hybrid coacervates delivering specific properties onto solid surfaces and comprising inorganic solid particles and a copolymer.
Samuel, Jorice; Poncelet, Olivier; Raccurt, Olivier, Dispersions of luminescent rare-earth oxide particles, varnish comprising these particles, their methods of preparation and method for marking substrates.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.