Method for obtaining precipitated calcium carbonate particles of nanometric scale structure
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C01F-005/24
C01F-005/00
출원번호
US-0481887
(2002-07-02)
등록번호
US-7501107
(2009-03-10)
우선권정보
FR-01 08909(2001-07-04)
국제출원번호
PCT/EP02/007490
(2002-07-02)
§371/§102 date
20040503
(20040503)
국제공개번호
WO03/004414
(2003-01-16)
발명자
/ 주소
Vogels,Claude
Cavalier,Karine
Sy,Didier
Rosa,Roberto
출원인 / 주소
Solvay (Societe Anonyme)
대리인 / 주소
Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
인용정보
피인용 횟수 :
2인용 특허 :
10
초록▼
Process for the production of precipitated calcium carbonate particles, structured at the nanoscale, by carbonation of milk of lime in the presence of a crystallization controller selected from the following list: polyaspartic acid, dioctyl sodium sulphosuccinate, polyacrylic acid, the molecular wei
Process for the production of precipitated calcium carbonate particles, structured at the nanoscale, by carbonation of milk of lime in the presence of a crystallization controller selected from the following list: polyaspartic acid, dioctyl sodium sulphosuccinate, polyacrylic acid, the molecular weight of which is between 500 and 15 000, and citric acid. When the crystallization controller is citric acid, its concentration in the milk of lime is between 5 and 15%.
대표청구항▼
The invention claimed is: 1. A process for preparing precipitated calcium carbonate particles structured at the nanoscale, comprising, in a single stage: carbonating milk of lime in the presence of dioctyl sodium sulphosuccinate in a concentration of greater than 1% and not exceeding 20% to obtain
The invention claimed is: 1. A process for preparing precipitated calcium carbonate particles structured at the nanoscale, comprising, in a single stage: carbonating milk of lime in the presence of dioctyl sodium sulphosuccinate in a concentration of greater than 1% and not exceeding 20% to obtain calcium carbonate particles comprising at least one of nanofibres, nanofibres of nanorosary type, nanoplates, nanoplates combined as accordions, and nanofibres combined as faggots; or carbonating milk of lime in the presence of polyaspartic acid and/or a salt thereof in a concentration of greater than 1% and not exceeding 20% to obtain calcium carbonate particles comprising at least one of nanofibres, nanofibres of nanorosary type, nanoplates, nanoplates combined as accordions, and nanofibres combined as faggots. 2. A process for the production of precipitated calcium carbonate particles structured at the nanoscale, comprising carbonation of milk of lime, wherein the carbonation is carried out in the presence of at least one crystallization controller, and wherein the crystallization controller is dioctyl sodium sulphosuccinate. 3. The process according to claim 1, comprising carbonating milk of lime in the presence of polyaspartic acid and/or a salt thereof. 4. Precipitated calcium carbonate particles obtained by the process according to claim 1, which are composed of at least one nanofibre. 5. The precipitated calcium carbonate particles according to claim 1, wherein the nanofibre is of the nanorosary type. 6. A process for the production of precipitated calcium carbonate particles structured at the nanoscale, comprising carbonation of milk of lime, wherein the carbonation is carried out in the presence of at least one crystallization controller selected from the group consisting of citric acid and/or a salt thereof in a concentration of between 5 and 15%, polyacrylic acid and/or a salt thereof with a molecular weight of between 500 and 15 000, dioctyl sodium sulphosuccinate and polyaspartic acid and/or a salt thereof, and wherein the precipitated calcium carbonate particles are composed of at least one nanoplate. 7. Precipitated calcium carbonate particles structured at the nanoscale, which are composed of nanoplates combined as accordions. 8. Precipitated calcium carbonate particles structured at the nanoscale, which are composed of nanofibres combined as faggots. 9. Plastic comprising the precipitated calcium carbonate particles according to claim 7. 10. A process comprising mixing precipitated calcium carbonate particles obtained by the process according to claim 1 with one or more plastics. 11. A plastic composition comprising one or more plastics and precipitated calcium carbonate particles obtained by the process according to claim 1. 12. Plastic comprising the precipitated calcium carbonate particles according to claim 8. 13. The process as claimed in claim 1, wherein: carbonating milk of lime in the presence of dioctyl sodium sulphosuccinate comprises carbonating milk of lime to obtain precipitated calcium carbonate particles comprising nanoplates combined as accordions; and carbonating milk of lime in the presence of polyaspartic acid and/or a salt thereof comprises carbonating milk of lime to obtain precipitated calcium carbonate particles comprising nanofibres combined as faggots. 14. The process as claimed in claim 1, wherein the carbonation is carried out in the presence of dioctyl sodium sulphosuccinate.
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이 특허에 인용된 특허 (10)
Tsukisaka Ryogo (Takarazuka JPX) Kondo Satoshi (Nishinomiya JPX) Kaneguchi Toshio (Kobe JPX) Deguchi Takashi (Nishinomiya JPX), Calcium carbonate, calcium carbonate pigment, process for preparing same, coating composition for information recording.
Fortier Steven M. ; Jackson William B. ; O'Rorke Peter B. ; Perez Ricardo ; Bryan David P., Method for the production of precipitated calcium carbonate having a selected crystal form, products produced thereby and their uses.
Landscheidt Alfons (Lefarthstr. 11 4150 Krefeld DEX) Gebauer Andreas (Schreinerstr. 4 4150 Krefeld DEX), Process for the production of polyacrylic acids.
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