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    Process for preparing sintered shapes and compositions for use therein.
    93.
    发明专利
    Process for preparing sintered shapes and compositions for use therein. 未知

    公开(公告)号：ZA929001B

    公开(公告)日：1993-06-01

    申请号：ZA929001

    申请日：1992-11-20

    Applicant: LUBRIZOL CORP

    Inventor： BURK W MICHAEL ,  QUINN ROBERT E

    IPC: C04B33/04 ,  C04B35/111 ,  C04B35/634 ,  C04B35/632 ,  C07C ,  C08L ,  C08F

    Abstract: The invention relates to a method of preparing sintered shapes, comprising the steps of: (1) forming a green body from a mixture comprising (A) at least one inorganic powder with (B) at least one polymer derived from (a) at least two sulfo monomers or (b) a combination of (i) a sulfo monomer with (ii) at least one monomer selected from acrylic compounds, acrylonitriles, vinyl lactams and vinyl pyrrolidones and maleic acids, anhydrides or salts, provided the mixture is substantially free of polysaccharide;and (2) sintering the green body. Inorganic shapes made from the compositions of the present invention have relatively high fired densities; small uniform grain sizes; and relatively low porosity.

    95.
    发明专利
    未知

    公开(公告)号：BR9204591A

    公开(公告)日：1993-05-25

    申请号：BR9204591

    申请日：1992-11-20

    Applicant: LUBRIZOL CORP

    Inventor： HELLER FRED E ,  QUINN ROBERT E ,  HIGGINS WILLIAM A

    IPC: C04B35/632 ,  C04B35/26 ,  C04B35/45 ,  C04B35/565 ,  C04B35/581 ,  C04B35/634 ,  C04B35/00

    Abstract: The invention relates to methods of preparing sintered shapes (shaped articles) comprising the steps of forming a green body from a mixture comprising (A) a major amount of at least one inorganic powder with (B) at least one reaction product of an amine other than an alkanolamine with a hydrocarbyl-substituted carboxylic acylating agent or alkylalkyleneglycolacetic acylating agent; provided the reaction product is other than an alkylene oxide treated fatty monocarboxylic amide and provided that when the hydrocarbyl-substituted carboxylic acylating agent is a nonaromatic acylating agent, then the hydrocarbyl group is other than hydrocarbyl groups having an average of about 55 to about 110 carbon atoms; and sintering the green body. Sintered shapes obtainable from the methods of the present invention have relatively high fired densities and small uniform grain sizes and low porosity.

    PROCESS FOR PREPARING SINTERED SHAPES AND COMPOSITIONS FOR USE THEREIN
    96.
    发明专利
    PROCESS FOR PREPARING SINTERED SHAPES AND COMPOSITIONS FOR USE THEREIN 未知

    公开(公告)号：CA2083430A1

    公开(公告)日：1993-05-23

    申请号：CA2083430

    申请日：1992-11-20

    Applicant: LUBRIZOL CORP

    Inventor： BURK W MICHAEL ,  QUINN ROBERT E

    IPC: C04B35/632 ,  C04B33/04 ,  C04B35/111 ,  C04B35/634 ,  C08L41/00 ,  B28B1/00 ,  B01F17/04 ,  C04B33/10 ,  C04B35/64

    Abstract: 2457B Title: PROCESS FOR PREPARING SINTERED SHAPES AND COMPO SITIONS FOR MAKING THE SAME of the Invention The invention relates to a method of preparing sintered shapes, comprising the steps of: (1) forming a green body from a mixture comprising (A) at least one inorganic powder with (B) at least one polymer derived from (a) at least two sulfo monomers or (b) a combination of (i) a sulfo monomer with (ii) at least one monomer selected from acrylic compounds, acrylonitriles, vinyl lactams and vinyl pyrrolidones and maleic acids, anhydrides or salts, provided the mixture is substantially free of polysaccharide; (2) sintering the body. Inorganic shapes made from the compositions of the present invention have relatively high fired densities; small uniform grain sizes; and relatively low porosity. The sulfo polymers of the present invention help disperse the inorganic powder. These polymers improve deagglomeration of the inorganic powder and also help prevent reagglomeration of the powder. The polymers provide divalent ion stability for systems using water containing divalent ions, such as hard water. These polymers help reduce viscosity of inorganic powder slurries and improve defloculation of the inorganic powder.

    METHODS OF PREPARING SINTERED SHAPES AND GREEN SHAPES USED THEREIN
    97.
    发明专利
    METHODS OF PREPARING SINTERED SHAPES AND GREEN SHAPES USED THEREIN 未知

    公开(公告)号：CA2083428A1

    公开(公告)日：1993-05-23

    申请号：CA2083428

    申请日：1992-11-20

    Applicant: LUBRIZOL CORP

    Inventor： HELLER FRED E ,  HIGGINS WILLIAM A ,  QUINN ROBERT E

    IPC: C04B35/632 ,  C04B35/26 ,  C04B35/45 ,  C04B35/565 ,  C04B35/581 ,  C04B35/634 ,  C04B35/00 ,  C08L23/26

    Abstract: 2586B Title: METHODS OF PREPARING SINTERED SHAPES AND MethodS USED THEREIN of the invention The invention relates to a method of preparing sintered shapes, comprising the steps of forming a green body from a mixture comprising (A) a major amount of at least one inorganic powder with (B) at least one reaction product of an amine other than an alkanolamine with a hydrocarbyl-substituted carboxylic acylating agent or alkylalkyleneglycolacetic acylating agent; provided the reaction product is other than an alkylene oxide treated fatty monocarboxylic amide and provided that when the hydrocarbyl-substituted carboxylic acylating agent is a nonaromatic acylating agent, then the hydrocarbyl group is other than hydrocarbyl groups having an average of about 55 to about 110 carbon atoms; and sintering the body. Sintered shapes made from the methods of the present invention have relatively high fired densities and small uniform grain sizes; and low porosity. The reaction products of the present invention help disperse the inorganic powder. These reaction products improve deagglomeration of the inorganic powder and help prevent reagglomeration of the powder.

    98.
    发明专利
    未知

    公开(公告)号：MX9206668A

    公开(公告)日：1993-05-01

    申请号：MX9206668

    申请日：1992-11-19

    Applicant: LUBRIZOL CORP

    Inventor： BURK W MICHAEL ,  QUINN ROBERT E

    IPC: C04B33/04 ,  C04B35/632 ,  C04B35/111 ,  C04B35/634 ,  B22F7/08

    Abstract: The invention relates to a method of preparing sintered shapes, comprising the steps of: (1) forming a green body from a mixture comprising (A) at least one inorganic powder with (B) at least one polymer derived from (a) at least two sulfo monomers or (b) a combination of (i) a sulfo monomer with (ii) at least one monomer selected from acrylic compounds, acrylonitriles, vinyl lactams and vinyl pyrrolidones and maleic acids, anhydrides or salts, provided the mixture is substantially free of polysaccharide;and (2) sintering the green body. Inorganic shapes made from the compositions of the present invention have relatively high fired densities; small uniform grain sizes; and relatively low porosity.

    100.
    发明专利
    未知

    公开(公告)号：FI930345A0

    公开(公告)日：1993-01-27

    申请号：FI930345

    申请日：1993-01-27

    Applicant: LUBRIZOL CORP

    Inventor： QUINN ROBERT E ,  BURK W MICHAEL ,  HENRY WILLIAM S ,  GOODLIVE STEVEN A

    IPC: C07C303/44 ,  C07C309/15

    Abstract: A process for the preparation of a purified monomer is disclosed which comprises the steps of reacting an impure monomerwherein R1 and R2 are independently hydrogen or alkyl groups containing from 1 to about 6 carbon atoms, with(B) a substantially aqueous solution of an oxide or hydroxide of the structure MO or MOH wherein M is a Group IA or Group IIA metal, or an amine of the structure NR3R4R5 wherein R3, R4 and R5 are independently hydrogen or alkyl, alkanol or alkoxy groups containing from 1 to about 12 carbon atoms,wherein the molar ratio of (A):(B) is from about 1:1-2 for Group IA metals, 2:1-2 for Group IIA metals or ratio of moles of (A) to nitrogens of (B) is from about 1:1-2 nitrogens to form a salt, wherein in order to prevent polymerization of (A), the purified monomer or both or prevent undesired side reactions, the reaction of (A) and (B) occurs at a temperature of between about -20 to 75° C. and at a pH between about 7 to about 12.5, and recovering a purified salt by crystallization in the presence of an oxygen bearing gas stream by subjecting the aqueous solution to changes in temperature and/or pressure and/or concentration.

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