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특허 상세정보

Structured kaolin pigment and process for manufacture thereof

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C09C-001/00    C09C-003/00    C04B-033/04    C04B-014/00   
미국특허분류(USC) 106/446 ; 501/146 ; 501/147 ; 501/150
출원번호 US-0910338 (1986-09-19)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 13  인용 특허 : 7

A structured kaolinitic pigment having improved physical and optical characteristics when incorporated as a filler in paper. The pigment is also useful in paper coating applications. The pigment consists of porous aggregates of kaolin particles which are chemically bonded together. The pigment may be produced by chemically reacting a particulate kaolin with a metal chloride, such as silicon tetrachloride. The process is conducted under conditions such that the kaolinite structure is not impaired.


A process for producing a structured kaolin pigment having enhanced light scattering and opacifying properties when incorporated in paper; said process comprising the steps of: (a) forming a feed mixture of a fine particle size kaolin; and (b) chemically reacting said feed mixture in particulate form with a metal chloride having the general formula MClx, where M is Si, Al or Ti; and x is 3 or 4 in accordance with M, to aggregate the kaolin particles to form the structured pigment; the moisture level present in the said feed mixture reacted in step (b) be...

이 특허를 인용한 특허 피인용횟수: 13

  1. Maxwell Chris B. (Evans GA) Malla Prakash B. (Martinez GA). Chemically aggregated kaolin clay pigment and process for making the same by phosphate bonding. USP1996125584925.
  2. Londo Michael G. ; Moini Ahmad ; Gibbs Mitchell R. ; Greene Stephanie F.. Coating pigment for ink-jet printing. USP1999125997625.
  3. Sare Edward J. ; Raper Stephen C. ; Adkins Tommy L. ; Manning Curtis L.. Compositions of large particle calcined kaolin clay and methods of making the same. USP2000086103005.
  4. Prakash B. Malla ; Siva Devisetti. High surface area aggregated pigments. USP2002116478865.
  5. Towe Michael (2158 Montgomery Street Montreal ; Quebec CAX H2K 2R8). Light-modifying composition. USP1993125273578.
  6. Hen John ; Young Ray ; Ginez Andres ; Mathur Sharad. Low sheen opacifying pigments and manufacture thereof by calcination of kaolin clay. USP2000106136086.
  7. Dunaway Weyman H. (Sandersville GA) Verbov Lev F. (Milledgeville GA). Method of preparing aggregated pigments from clays. USP1990114971629.
  8. Malla, Prakash B.; Devisetti, Siva. Nano particle mineral pigment. USP2013028382016.
  9. John Hen ; Ray Young ; Andres Ginez ; Sharad Mathur. Paints containing low sheen opacifying pigments obtained by flux calcination of kaolin clay. USP2002026346145.
  10. Malla, Prakash B.; Devisetti, Siva. Pigments for ink jet paper. USP2003086610136.
  11. Fellers, Billy D.. Process for extracting and purifying naturally occurring zeolite. USP2003126662951.
  12. Fellers,Billy D.. Process for extracting and purifying naturally occurring zeolite. USP2006027004328.
  13. Virtanen, Pentti. Reinforced porous fibre product. USP2013018354003.