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    Titanium dioxide pigments
    41.
    发明授权
    Titanium dioxide pigments 失效
    二氧化钛颜料

    公开(公告)号：US3821359A

    公开(公告)日：1974-06-28

    申请号：US6412070

    申请日：1970-07-30

    Applicant: AMERICAN CYANAMID CO

    Inventor： LEWIS J ,  ROBERTS G

    IPC: C01G23/053 ,  C09C1/36 ,  C01G23/04 ,  C01G23/08

    CPC classification number: C01G23/053 ,  C01P2006/60 ,  C09C1/3692 ,  C09C3/041 ,  C09C3/06

    Abstract: This invention relates to the preparation of titanium dioxide pigment and has as its principal object the production of titanium dioxide pigment of improved tinting strength and tint tone. In particular, the present invention relates to a process for the preparation of TiO2 in pigmentary form which comprises forming a slurry of particulate TiO2 in hydrofluoric acid, allowing the slurry to stand until at least some of the slurried solids have been dissolved, and thereafter recovering the resulting titanium dioxide pigment of reduced particle size, improved tinting strength and bluer tint tone.

    Pigments
    42.
    发明授权
    Pigments 失效
    颜料

    公开(公告)号：US3808022A

    公开(公告)日：1974-04-30

    申请号：US24797672

    申请日：1972-04-27

    Applicant: BRITISH TITAN LTD

    Inventor： PORTER D ,  TWIST W ,  PEACOCK J

    IPC: C09C1/36

    CPC classification number: C09C1/3692 ,  C01P2004/86 ,  C09C3/041 ,  C09C3/063 ,  C09C3/08

    Abstract: Pigmentary titanium dioxide coated with a propane diol in an amount of from 0.05 to 3 percent by weight. The particles can also be coated with one or more hydrous metal oxides.

    Abstract translation: 涂覆丙二醇的颜料二氧化钛的量为0.05-3重量％。 颗粒也可以涂覆有一种或多种含水金属氧化物。

    Titanium dioxide pigments
    43.
    发明授权
    Titanium dioxide pigments 失效
    二氧化钛颜料

    公开(公告)号：US3649323A

    公开(公告)日：1972-03-14

    申请号：US3649323D

    申请日：1969-09-12

    Applicant: GEORGE RYBURN ROE ,  GERARD MARTIN SHEEHAN ,  DONALD EDWARD KNAPP

    Inventor： ROE GEORGE RYBURN ,  SHEEHAN GERARD MARTIN ,  KNAPP DONALD EDWARD

    IPC: C09C1/00 ,  C09C1/36

    CPC classification number: C09C1/3692 ,  C01P2006/22 ,  C09C3/041 ,  C09C3/08

    Abstract: Titanium dioxide pigment of improved water dispersibility and stable viscosity when incorporated into an aqueous system, particularly an aqueous system of high calcium and magnesium ion content, resulting from the presence of a normal, nonvolatile, polyhydric alcohol in combination with an alkanolamine. The polyhydric alcohol is represented by sorbitol and mannitol, while the amine is represented by triethanolamine.

    Abstract translation: 当二氧化钛颜料掺入到水性体系中时，特别是由于与正链烷醇胺组合存在正常的非挥发性多元醇而导致的高钙离子和镁离子含量的水性体系，其具有改善的水分散性和稳定的粘度。 多元醇由山梨糖醇和甘露糖醇代表，而胺由三乙醇胺代表。

    Lead-chromate-based pigment
    45.
    发明授权
    Lead-chromate-based pigment 失效
    铅铬酸盐颜料

    公开(公告)号：US3599880A

    公开(公告)日：1971-08-17

    申请号：US3599880D

    申请日：1969-03-24

    Applicant: DU PONT

    Inventor： JANOWSKI ALEXANDER M

    IPC: C09C1/20 ,  C09C3/04 ,  B02C13/24 ,  B02C13/00

    CPC classification number: C09C3/041 ,  C01P2006/60 ,  C09C1/20

    Abstract: Method of preparing improved lead-chromate-based pigments, for particular application in printing inks and paints, in which lead chromate is first impact ground to pulverize it, the oversize particles are selectively removed from the product and recirculated, and the pulverized output is further subjected to disintegration and discharged through a classification means to result in improved pigment.

    Titanium dioxide stabilizing
    46.
    发明授权
    Titanium dioxide stabilizing 失效
    二氧化钛稳定

    公开(公告)号：US3492264A

    公开(公告)日：1970-01-27

    申请号：US3492264D

    申请日：1966-02-08

    Applicant: COSDEN OIL & CHEM CO

    Inventor： HAHN GRANVILLE J

    IPC: C09C1/36 ,  C08K1/06 ,  C08F45/04

    CPC classification number: C09C1/3692 ,  C01P2006/60 ,  C09C3/041 ,  C09C3/06

    Abstract: 1,181,372. Titanium dioxide compositions. COSDEN OIL & CHEMICAL CO. 7 Feb., 1967 [8 Feb., 1966], No. 5727/67. Heading C3P. The greying of titanium dioxide pigmented compositions imparted during abrasive mixing, i.e. dry mixing in contact with metallic surfaces under conditions where the metal rubs off and discolours the pigment, is reduced by carrying out the mixing in the presence of up to 1% by wt. of a friable, dust-forming, colourless, alkaline inorganic solid containing or producing during the mixing particles having a size of less than 60 mesh U.S. Standard Sieve. The solid may be sodium hydroxide, calcium oxide, barium oxide, strontium oxide, magnesium oxide, calcium hydroxide, sodium bicarbonate, potassium carbonate, or sodium aluminate or borate and may contain an oxidizing agent, e.g. potassium persulphate or hydrogen peroxide. The composition may comprise particles, e.g. beads, of polystyrene.

    Amino salts of dimerized fatty acids used as auxiliaries for lacquers
    47.
    发明授权
    Amino salts of dimerized fatty acids used as auxiliaries for lacquers 失效
    二聚脂肪酸的氨基盐用作漆的辅助剂

    公开(公告)号：US3386845A

    公开(公告)日：1968-06-04

    申请号：US50815865

    申请日：1965-11-16

    Applicant: DEHYDAG GMBH

    Inventor： WILHELM OFFERMANN ,  HEINRICH LINDEN

    IPC: C09B67/18 ,  C09B67/46 ,  C09C3/00 ,  C09D17/00 ,  C11C3/00

    CPC classification number: C09B67/0086 ,  C01P2004/50 ,  C09B67/002 ,  C09C3/006 ,  C09C3/041 ,  C09C3/08 ,  C09D17/00 ,  C11C3/00

    Abstract: At least one neutral amine salt of a dimerized fatty acid and an aliphatic C12-C18 amine, cycloaliphatic, or aromatic or heterocyclic mono- or poly-nuclear amine is added to a paint or varnish composition as an anti-settling and anti-flooding agent for the pigment. The amine salt acts also as a grinding aid if mixed with the pigment before incorporation in the paint medium. The amine salt is used in an amount 0.05-5% by weight of the composition or 0.1-3% of the pigment in the former and latter cases. Salts of dimerized mono- or poly-unsaturated C11-C22, particularly C18, fatty acids with C12-C18 primary aliphatic amines are preferred. Examples 1, 2 and 4 disclose alkyd resin paints and Example 5 a lacquer based on phenol-modified colophony and wood oil together with linseed oil. Example 1 contains a short oil alkyd resin and a urea-formaldehyde resin, both in xylene solution, red iron oxide, talcum, solvents, and a zinc naphthenate drier, Example 2 two long oil alkyds, a maleic resin, titanium dioxide, heavy spar, zinc yellow, an anti-skinning agent, solvents and a cobalt-lead naphthenate drier, Example 4 two long oil alkyds, a maleic resin, titanium dioxide, soot, and an anti-skinning agent, solvents and a cobalt-lead naphthenate drier, and Example 5 the above resin and drying oils and titanium dioxide, yellow and black iron oxides, an anti-skinning agent, white spirit and cobalt-lead naphthenate, as well as amine salts of the invention or other materials for comparative purposes.ALSO:At least one neutral amine salt of a dimerized fatty acid and C12-C18 aliphatic amine, cycloaliphati or aromatic or heterocyclic mono- or poly-nuclear amine is added to a paint or varnish composition as an anti-settling and anti-flooding agent for the pigment. The amine salt acts also as a grinding aid if mixed with the pigment before incorporation in the paint medium. Quantities required are 0.05-5% by weight of the composition or 0.1-3% by weight of the pigment in the former and latter cases. Salts of dimerized mono- or poly-unsaturated C11-C22, particularly C18, fatty acids with C12-C18 primary aliphatic amines are preferred, especially the salt of the coconut amines mixture with dimerized soya bean or cotton seed oil fatty acids. The dimerized acid may contain 15-25% by weight trimers and higher polymers, and up to 3% monomer. Example 3 discloses linseed oil based paints containing various amine salts and the pigments Prussian blue, ammonium manganese phosphate, a red azo dyestuff based on 2-chloro-4-aminotoluene-5-sulphonic acid-b -hydroxynaphthoic acid and a yellow pigment based on 3,3-dichlorobenzidine and acetoacetic-m-xylidide, in turn, and Example 5 a lacquer based on wood oil, linseed oil and phenol-modified co-lophony and containing different amine salts and also white spirit, cobalt lead naphthenate titanium dioxide, yellow iron oxide and black iron oxide.

    Sulfate-base rutile tio2 pigment and method for producing same
    48.
    发明授权
    Sulfate-base rutile tio2 pigment and method for producing same 失效
    硫酸盐基金红石型氧化钛颜料及其制造方法

    公开(公告)号：US3220867A

    公开(公告)日：1965-11-30

    申请号：US24972263

    申请日：1963-01-07

    Applicant: NAT LEAD CO

    Inventor： O'SHAUGHNESSY JAMES M

    IPC: C09C1/36

    CPC classification number: C09C1/36 ,  C01P2004/86 ,  C09C1/3692 ,  C09C3/041 ,  C09C3/063

    Abstract: A rutile TiO2 calciner discharge prepared by drying, calcining and milling a TiO2 hydrolysate produced by a sulphate process, is characterized by discrete particles having a weight mean size no greater than 0.33 micron and a standard deviation of distribution no greater than 0.17 micron. The dry milled discharge may be slurried in an aqueous medium with one or more soluble salts of Ti, Al or Si, the pH of the mixture adjusted to precipitate the hydrous metal oxides or the discharge, and the coated discharge dry milled. The coated discharge is preferably milled with an intensity at least equal to the minimum used in milling the untreated discharge. The discharge may be coated with 0-2.5% hydrous TiO2, 0-4.0% hydrous Al2O3 and 0-2.5% hydrous SiO2, the total addition being not less than 1.0%. Preferably at least 70% of the coated particles are of 0.15-0.3 microns, not more than 3% being above 0.5 microns.

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