公开(公告)号：EP1171492A1

公开(公告)日：2002-01-16

申请号：EP99967997.0

申请日：1999-12-22

Applicant: MINERALS TECHNOLOGIES INC.

Inventor： DRUMMOND, Donald, Kendall ,  WERNETT, Patrick, Clinton

IPC: C08F230/02 ,  C08F228/02 ,  C08F8/40 ,  D21H17/34

CPC classification number: D21H17/34 ,  D21H21/18

Abstract: Novel polymers are provided having phosphonated and sulphonated substituent groups such that the polymer is multifunctional in its use. Optional amide substituents are used to reduce electrostatic charge density or for hydrogen bonding. An advantage of the polymer is the flexibility of using it for multiple purposes. A particular application is for bonding paper fillers and paper fiber together.

公开(公告)号：EP0880618B1

公开(公告)日：2001-12-12

申请号：EP97903445.1

申请日：1997-02-12

Applicant: Ciba Specialty Chemicals Water Treatments Limited ,  MINERALS TECHNOLOGIES INC.

Inventor： DEPASQUALE, David ,  EVANS, Bruce

IPC: D21H17/67 ,  D21H23/76

CPC classification number: D21H23/765 ,  D21H17/29 ,  D21H17/375 ,  D21H17/455 ,  D21H17/53 ,  D21H17/55 ,  D21H17/56 ,  D21H17/675 ,  D21H17/68 ,  D21H21/10

公开(公告)号：EP1081197A1

公开(公告)日：2001-03-07

申请号：EP00203834.7

申请日：1996-03-14

Applicant: MINERALS TECHNOLOGIES INC.

Inventor： Donigian, Douglas Ward ,  Resnik, Robert Kenneth ,  McFadden, Michael Gregory

IPC: C09C1/02 ,  C01F11/18 ,  B41M5/00 ,  D21H19/38

CPC classification number: B41M5/5218 ,  B41M5/508 ,  B41M5/5236 ,  B41M5/5254 ,  C01F11/185 ,  C01P2006/12 ,  C09C1/021

Abstract: The present invention relates to an ink jet recording paper with enhanced properties that incorporates novel milled precipitated calcium carbonate pigments and a binder. The PCC is prepared by carbonating a slurry of calcium hydroxide to form a slurry of precipitated calcium.

Abstract translation: 本发明涉及具有增强性能的喷墨记录纸，其结合新的研磨沉淀碳酸钙颜料和粘合剂。 通过将氢氧化钙浆料碳化以形成沉淀的钙浆料来制备PCC。

公开(公告)号：EP1051370A1

公开(公告)日：2000-11-15

申请号：EP98965548.5

申请日：1998-12-30

Applicant: MINERALS TECHNOLOGIES INC.

Inventor： FAIRCHILD, George, Henry ,  HOCKMAN, John, Albert

IPC: C04B35/14

CPC classification number: C01B33/20 ,  C01B33/24 ,  C03C1/00 ,  C03C1/02

Abstract: A method is disclosed of producing a synthetic silicate. The method is advantageous in providing material useful in glass making. Such method involves the reaction of calcium oxides and magnesium oxides, water and sodium silicates. The glass formation is performed at a lower temperature than usual and performed with a lower amount of volatile gas release. Less cristobalite formation in the glass occurs. The synthetic silicate produced can be a cylindrical pellet.

公开(公告)号：EP0954512A2

公开(公告)日：1999-11-10

申请号：EP97954983.0

申请日：1997-12-05

Applicant: MINERALS TECHNOLOGIES INC.

Inventor： DRUMMOND, Donald, Kendall

IPC: D21H17 ,  C01F11 ,  C09C1 ,  D21F11

CPC classification number: C01F11/18 ,  C01F11/185 ,  C01P2006/22 ,  C01P2006/60 ,  C09C1/021 ,  D21H17/07 ,  D21H17/65 ,  D21H17/66 ,  D21H17/67 ,  D21H17/675 ,  D21H17/71

Abstract: The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble calcium salt, a weak acid, a chelating agent, a weak acid capable of chelating calcium ion, or a mixture thereof. The acid-stabilizer is present in an amount sufficient to provide an aqueous calcium carbonate slurry having an increased calcium ion concentration and an acidic pH. In a typical acid-stabilized calcium carbonate slurry of the invention, the acid-stabilizer is present in an amount sufficient to provide a calcium ion concentration of about 1 millimolar to about 5 molar, preferably from about 1 to about 120 millimolar. The invention also relates to a method of making the acid-stabilized calcium carbonate slurry of the invention, to a method of forming a filled paper, that includes the step of adding the acid-stabilized calcium carbonate slurry of the invention to a papermaking pulp in a process for making acid paper, and to a filled paper produced according to the method of the invention.

公开(公告)号：EP0946418A1

公开(公告)日：1999-10-06

申请号：EP97950828.0

申请日：1997-12-03

Applicant: MINERALS TECHNOLOGIES INC.

Inventor： HANSEN, Colin, Wayne ,  WENER, I, Christopher, Alan

IPC: C01F11 ,  D21H19

CPC classification number: C01F11/185 ,  C01P2004/61

Abstract: The present invention relates to dewatering of an aqueous slurry of calcium carbonate. More particularly, the present invention relates to the use of non-ionic surfactants in dewatering aqueous slurries of an aragonitic precipitated calcium carbonate. Calcium carbonate slurries dewatered using the non-ionic surfactants of the present invention have higher weight percent solids, decreased dispersant demand, and result in higher productivity.

公开(公告)号：EP0859741A1

公开(公告)日：1998-08-26

申请号：EP96939587.0

申请日：1996-11-07

Applicant: MINERALS TECHNOLOGIES INC.

Inventor： DRUMMOND, Donald, K.

IPC: C01B33 ,  C02F1 ,  D21H21 ,  D21H23

CPC classification number: C02F1/5236 ,  C02F1/56 ,  C02F1/76 ,  D21H21/10 ,  D21H23/12 ,  Y10T428/2982

Abstract: A composition comprising the product precipitated in the admixing of a soluble metal salt and one or more compounds having a component selected from silicates, phosphates and borates; and a method for controlling drainage and/or retention in the formation of a paper matrix or for treating water comprising the use of such product.

公开(公告)号：EP0703315B1

公开(公告)日：1998-01-14

申请号：EP95118362.3

申请日：1991-03-05

Applicant: MINERALS TECHNOLOGIES INC.

Inventor： Kunesh, Charles J. ,  Passaretti, June D.

IPC: C01F11/18 ,  D21H17/67

CPC classification number: B82Y30/00 ,  C01F11/18 ,  C01F11/185 ,  C01P2004/30 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/60 ,  D21H17/675 ,  D21H21/52

公开(公告)号：EP0815175A1

公开(公告)日：1998-01-07

申请号：EP96908826.0

申请日：1996-03-14

Applicant: MINERALS TECHNOLOGIES INC.

Inventor： SOHARA, Joseph, Andrew ,  YOUNG, Trudy, Diane

IPC: C08K9 ,  C09C1 ,  C09C3 ,  D21C5 ,  D21H17

CPC classification number: D21C5/025 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/84 ,  C01P2006/12 ,  C01P2006/60 ,  C01P2006/62 ,  C01P2006/63 ,  C01P2006/64 ,  C09C1/00 ,  C09C1/0081 ,  C09C3/063 ,  D21H17/675 ,  Y02W30/648

Abstract: A method of recycling mineral pigments contained in the waste produced from the deinking of wastepaper. The deink residue is heated in an oxygen-containing atmosphere to a temperature sufficient to completely oxidize all the organic hydrocarbons present. Heat, water, and carbon dioxide also are generated and may be captured and reused in the process. Combustion causes a chemical reaction to occur, so that the original pigments contained in the deink residue are converted to new, stable mineral forms. The ash from the combustion is primarily a mixture of gehlenite (Ca2Al2,SiO7), anorthite (CaAl2Si2O8) and perovskite (CaTiO3). The ash containing the mixed mineral phases is added to a reactor in which carbon dioxide gas is bubbled through an aqueous slurry of calcium hydroxide so that precipitated calcium carbonate (PCC) is produced. Because the mineral phases in the ash contain calcium as part of their crystal structure, the PCC will precipitate and grow on the ash particles. This results in a 'recycled' PCC pigment containing an ash 'core'. The properties of the recycled PCC are similar to virgin PCC.

公开(公告)号：EP0775088A1

公开(公告)日：1997-05-28

申请号：EP95930154.0

申请日：1995-08-10

Applicant: MINERALS TECHNOLOGIES INC.

Inventor： DRUMMOND, Donald, Kendall

IPC: C01B33 ,  C01B25 ,  C01B35 ,  D21H17 ,  D21H21

CPC classification number: C01B35/10 ,  C01B25/45 ,  C01B33/26 ,  D21H17/69 ,  D21H21/10

Abstract: Describe herein is a novel product and process for the production of a synthetically produced bentonite-type inorganic microparticle. The synthetic microparticle produced according to the process of the present invention is particularly useful in papermaking processes where retention, water drainage, sheet formation and tangible cost saving opportunities are important.