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특허 상세정보

Aggregated composite mineral pigments

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08J-003/14   
미국특허분류(USC) 524/413 ; 524/425 ; 524/447
출원번호 US-0609790 (1990-11-07)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 13  인용 특허 : 0
초록

A process for forming chemically aggregated composite porous bulking pigments for use in paper filling and coating formulations. An aqueous slurry is formed of feed mineral particles selected from one or more members of the group consisting of kaolin, calcium carbonate, titanium dioxide, gypsum, and mica. A high molecular weight carboxyl-containing polymer or copolymer is added to the slurry to flocculate the mineral particles. An excess of calcium ion is added to the flocced slurry to precipitate the calcium salt of the carboxyl-containing polymer in si...

대표
청구항

A process for forming chemically aggregated composite bulking pigments for use in paper filling and coating formulations, which comprises: a) forming an aqueous slurry at 10 to 30% solids, of a feed material comprising mineral particles selected from one or more members of the group consisting of kaolin, calcium carbonate, titanium dioxide, gypsum, and mica; b) adding a high molecular weight carboxyl-containing polymer or copolymer to said slurry to flocculate the said mineral particles; c) adding to the flocced slurry an excess of calcium ion to precipi...

이 특허를 인용한 특허 피인용횟수: 13

  1. Brown Alan J. (Vancouver WA). Agglomerates for use in making cellulosic products. USP1997105676746.
  2. Brown Alan J. (Vancouver WA). Bulking and opacifying fillers for paper and paper board. USP1997105676748.
  3. Brown Alan J. (Vancouver WA). Calcium carbonate pigments for coating paper and paper board. USP1997105676747.
  4. S. A. Ravishankar ; Ernest M. Finch ; Richard R. Berube. Composite pigments comprising in-situ precipitated metal carbonate crystals. USP2002086440209.
  5. Qiang Yu ; Srinivas Veeramasuneni ; Frederick Thomas Jones. Gypsum compositions and related methods. USP2002056387172.
  6. Qiang Yu ; Srinivas Veeramasuneni ; Frederick Thomas Jones. Gypsum compositions and related methods. USP2002116481171.
  7. Wilkenhoener, Uwe; Bender, Juergen; Grosser, Ingo. Method for manufacturing composite particles. USP2018039920182.
  8. Koukoulas, Alexander A.; Altman, Thomas E.; Matthew, M. C.; Amidon, Thomas E.; Mora, Fernand. Method to manufacture paper using fiber filler complexes. USP2003076592712.
  9. Nutbeem, Christopher; Cummings, David O.; Husband, John C.; Skuse, Dave R.. Paper coating pigments. USP2010077758690.
  10. Kaessberger, Michael; Pohl, Michael. Precipitated calcium carbonate pigment, especially for use in inkjet printing paper coatings. USP2015038986440.
  11. Bleakley Ian Stuart,GBX. Process for the treatment of an aqueous suspension comprising kaolin. USP1999126004467.
  12. Bleakley Ian Stuart,GBX. Process for the treatment of waste material suspensions. USP1998115830364.
  13. Yuan, Jun; Garska, Michael J.; Pruett, Robert J.. Stabilized kaolin slurry and methods for improving kaolin slurry stability. USP2014048702860.