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특허 상세정보

Processing of kaolinitic clays at high solids under acidic conditions

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C04B-014/00   
미국특허분류(USC) 106/309 ; 106/288B ; 106/308B ; 501/147
출원번호 US-0734939 (1985-05-16)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 17  인용 특허 : 2
초록

A process for beneficiating a crude kaolinitic clay mineral to produce a clay filler for use in papermaking to improve the brightness, the color characteristics and the light scattering efficiency of the paper product. The crude kaolin clay is blunged with water containing a dispersing agent consisting of a blend of from about 20% to about 50% by weight of a water-soluble carbonate, about 20% to about 50% by weight of a water-soluble polyacrylate, and from 0% to about 60% by weight of a water-soluble anionic phosphate, to form a high solids fluid aqueous...

대표
청구항

A process for treating a crude kaolinitic clay mineral comprising: a. forming a fluid aqueous suspension of crude kaolinitic clay mineral, said suspension having a solids content of at least about 65% by weight and an acid pH of at least about 5.5, said suspension containing a dispersing agent comprising from about 20% to about 50% by weight of a water-soluble carbonate, from about 20% to about 50% by weight of a water-soluble orgainic polyarylate, and from 0% to about 60% by weight of a water-soluble anionic phosphate; b. subjecting said suspension to a...

이 특허를 인용한 특허 피인용횟수: 17

  1. Jones J. Philip E. (Sandersville GA) Raythatha Rasik H. (Tennille GA). Coated paper and process. USP1989044820554.
  2. Hunter,Gregory S.; Nichols,Carl W.. Composition and method for crop protection. USP2008127470319.
  3. Gay, Ernest; Messias, Jose; Mender, Sayre; Pruett, Robert J.. Granulated kaolin compositions and processes for their production. USP2013038388750.
  4. Pruett,Robert J.; Yuan,Jun; Golley,Christopher R. L.; Garska,Michael J.. Integrated process for simultaneous beneficiation, leaching, and dewatering of kaolin clay suspension. USP2006107122080.
  5. Raythatha Rasik H. (Tennille GA). Kaolin aggregation using combination of organic and inorganic bases. USP1989024806167.
  6. Raythatha Rasik H. (Tennille GA) Andrews E. Wayne (Sandersville GA). Kaolinite aggregation using sodium silicate. USP1989034816074.
  7. Nichols Carl W. ; Cooner Robert G.. Low viscosity, high solids content slurry. USP2000066074473.
  8. Yuan Jun (Milledgeville GA) Everett Ben E. (Tennile GA) Andrews Windell R. (Sandersville GA). Method for beneficiating discolored kaolin to produce high brightness coating clay. USP1997115685900.
  9. Rodriguez Jose M. ; Fortier Steven M.. Method for producing high solids aqueous acid-resistant calcium carbonate suspensions and product thereof. USP1999065913973.
  10. Salinas Jorge (Homestead FL). Method for producing high solids kaolin slurry. USP1990044916094.
  11. Greenhill, David Andrew; May, Anthony Allan; Golley, Christopher R. L.; Andrews, Ronald Windell. Method of treating an aqueous suspension of kaolin. USP2003096615987.
  12. Pruett, Robert J.; Richardson, Jim; Limousin, William; Yildirim, Ismail; Yuan, Jun. Method of treating an aqueous suspension of kaolin. USP2013108545787.
  13. Sigman, Michael Barron; Mathur, Sharad; Folmar, Kenneth W.; Young, Timothy M.. Methods for stabilizing hydrous kaolin. USP2014038664319.
  14. Novich Bruce E. (Lexington MA). Slurry for centrifugal classification of colloidal particles. USP1989114882088.
  15. Nichols,Carl W.. Stabilized slurry composition and method of making the same. USP2007087258732.
  16. Jones J. Philip E. (Sandersville GA) Salinas JorgE. (Sandersville GA) Geho Keryn N. (Canton GA) Dunaway Weyman H. (Sandersville GA) Raythatha Rasik H. (Tennille GA). Structured kaolin pigment and process for manufacture thereof. USP1989074851048.
  17. Raythatha Rasik H. (Tennille GA) Andrews E. Wayne (Sandersville GA). Structured kaolin pigments. USP1989054826536.