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Acid-stabilized calcium carbonate, process for its production and method for its use in the manufacture of acidic paper 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C09C-001/02
출원번호 US-0491366 (1990-03-09)
발명자 / 주소
  • Passaretti June D. (Liberty Corner NJ)
출원인 / 주소
  • Pfizer Inc. (New York NY 02)
인용정보 피인용 횟수 : 28  인용 특허 : 4

초록

A form of calcium carbonate, acid-stabilized by the addition to finely divided calcium carbonate of one of a calcium- chelating agent and a conjugate base, such as sodium hexametaphosphate, followed by the addition of a weak acid, such as phosphoric acid, is disclosed. A process for producing this m

대표청구항

An acid-stabilized finely divided calcium carbonate comprising a mixture of at least about 0.1 weight percent of a compound selected from the group consisting of a calcium-chelating agent and a conjugate base, together with at least about 0.1 weight percent of weak acid, with the balance to give 100

이 특허에 인용된 특허 (4)

  1. Davidson ; Richard Robertson, Agglomerated fillers used in paper.
  2. Shibazaki Hiroji (Takarazuka JPX) Edagawa Setsuji (Nishinomiya JPX) Hasegawa Hisashi (Nishinomiya JPX) Takeuchi Takashi (Wakayama JPX) Moriyama Noboru (Wakayama JPX) Fukuyama Yukihiro (Naga JPX), Dispersant for calcium carbonate.
  3. Shibazaki Hiroji (Takarazuka JPX) Edagawa Setsuji (Nishinomiya JPX) Okamoto Yoshinaga (Nishinomiya JPX), Method for improving calcium carbonate.
  4. Price Charles R. (Macon GA) Trowbridge Frank R. (Macon GA) Kunkle Albert C. (Macon GA), Method of producing ultrafine ground calcium carbonate.

이 특허를 인용한 특허 (28)

  1. Wu Kuan-Ting (Sandersville GA), Acid resistant calcium carbonate composition and uses therefor.
  2. Wu Kuan-Ting (Sandersville GA), Acid resistant calcium carbonate composition containing an aluminum salt, uses therefor and processes for its production.
  3. Wu Kuan-Ting (Sandersville GA), Acid resistant carbonate composition containing an aluminum or magnesium hydroxide methods of preparation and uses there.
  4. Drummond,Donald Kendall, Acid stabilized calcium carbonate an method of making it.
  5. Snowden Kevin ; Rodriguez Jose M. ; Wu Kuan-Ting, Acid tolerant calcium carbonate composition and uses therefor.
  6. Koenig, Michael F., Coated printable substrates providing higher print quality and resolution at lower ink usage.
  7. Koenig, Michael F.; Singh, Kapil M., Coated printable substrates resistant to acidic highlighters and printing solutions.
  8. S. A. Ravishankar ; Ernest M. Finch ; Richard R. Berube, Composite pigments comprising in-situ precipitated metal carbonate crystals.
  9. Gane, Patrick A. C.; Buri, Matthias; Blum, Rene Vinzenz; Karth, Beat, Filler or pigment or processed mineral for paper, in particular a pigment containing natural CaCO, its manufacturing process, preparations containing it and their applications.
  10. Buri, Matthias; Rentsch, Samuel; Gane, Patrick A. C., High solids aqueous mineral and/or filler and/or pigment suspension in acidic pH environment.
  11. Mathur Vijay K., High speed manufacturing process for precipitated calcium carbonate employing sequential perssure carbonation.
  12. Gane, Patrick; Buri, Matthias; Blum, Rene Vinzenz, Inorganic pigment containing calcium carbonate, aqueous suspension containing same, and uses thereof.
  13. Mathur,Vijay K.; Mathur,Varun K., Method and apparatus for production of precipitated calcium carbonate and silicate compounds in common process equipment.
  14. Rodriguez Jose M. ; Fortier Steven M., Method for producing high solids aqueous acid-resistant calcium carbonate suspensions and product thereof.
  15. Sundaram,V. S. Meenakshi; Duarte,Daniel; Fisher,Steven, Methods for modifying electrical properties of papermaking compositions using carbon dioxide.
  16. Gane, Patrick; Buri, Matthias; Blum, René Vinzenz, Mineral pigment containing calcium carbonate, an aqueous suspension containing it and uses thereof.
  17. Yaniv, Isaac, Precipitated aragonite and a process for producing it.
  18. Laurila-Lumme, Auli; Pakarinen, Heikki; Leino, Hannu Juhani, Process for producing a paper web having calcium carbonate filler by introducing carbon dioxide to the pulp.
  19. Laurila-Lumme, Auli; Pakarinen, Heikki; Leino, Hannu Juhani, Process for substantially retarding dissolution of calcium carbonate in a papermaking system.
  20. Buri, Mathias; Schoelkopf, Joachim; Kaessberger, Michael, Process to disperse and / or grind and / or concentrate calcium carbonate in aqueous media using an aqueous solution containing zirconium compounds.
  21. Buri, Matthias; Schoelkopf, Joachim; Kaessberger, Michael, Process to disperse and/or grind and/or concentrate calcium carbonate in aqueous media using an aqueous solution containing zirconium compounds.
  22. Buri, Matthias; Schoelkopf, Joachim; Kaessberger, Michael, Process to disperse and/or grind and/or concentrate calcium carbonate in aqueous media using an aqueous solution containing zirconium compounds.
  23. Okuda, Masahiro; Yoshida, Kazuyo; Kumano, Osamu, Reagent kit for detecting lupus anticoagulant and method of determining presence or absence of lupus anticoagulant.
  24. Kunesh Charles J. (New York NY) Passaretti June D. (New York NY), Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof.
  25. Snowden Kevin J. ; Wu Kuan-Ting,TWX ; Rodriguez Jose M., Stabilized calcium carbonate composition using sodium silicate and one or more weak acids or alum and uses therefor.
  26. Leino, Hannu Juhani, Stabilized filler, its production and use.
  27. Wu Kuan-Ting (Sandersville GA), Surface modified calcium carbonate composition and uses therefor.
  28. Drummond Donald Kendall, Use of calcium carbonate in an acidic aqueous media.
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