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    13.
    发明专利
    未知

    公开(公告)号：DE1545122A1

    公开(公告)日：1969-07-31

    申请号：DEU0011070

    申请日：1964-09-26

    Applicant: UNION CARBIDE CORP

    Inventor： POPPELSDORF FEDOR

    IPC: B01J31/02 ,  B01J31/04 ,  B01J31/12 ,  C07C45/65 ,  C08G18/18

    Abstract: The reaction between an organic compound containing at least one isocyanate group and an active hydrogen-containing compound is accelerated by conducting it in the presence of a bis-(b -dimethylaminoalkyl) ether, in which each alkyl is ethyl or propyl. Organic tin catalysts may also be present, and many are specified. Many mono- and polyfunctional isocyanates and active hydrogen compounds are specified, the latter including water, alcohols, amines, ureas, urethanes, phenols, thiols and carboxylic acids, including alkylene oxide adducts of these, and also including high-molecular compounds, e.g. hydroxyl-terminated polyesters and polyester ethers; alkylene oxide adducts of aromatic amine/phenol/aldehyde ternary condensation products; alkylene oxide adducts of polyphenols; polytetramethylene glycols; and hydroxyl-containing polymers such as polyvinyl alcohol, copolymers of vinyl alcohol with ethylenic monomers such as vinyl chloride, and dihydric phenol-epichlorhydrin reaction products. When reacting polyisocyanates with polyols, polyurethane foams may be prepared by carrying out the reaction in the presence of a blowing agent, such as water, hydrocarbons, halohydrocarbons and N,N1-dimethyl-dinitroso-terephthalamide emulsifying agents, such as a polysiloxane-polyoxyalkylene block copolymer, may be present.ALSO:The reaction between an organic compound containing at least one isocyanate group and an active hydrogen-containing compound is accelerated by conducting it in the presence of a bis-(b -dimethylaminoalkyl) ether, in which each alkyl is ethyl or propyl. Organic tin catalysts may also be present and many are specified. Many mono- and polyfunctional isocyanates and active hydrogen compounds are specified, the latter including water, alcohols, amines, ureas, urethanes, phenols, thiols and carboxylic acids, and including alkylene oxide adducts of these. Examples react phenyl iso cyanate with butanol and with water. Bis-(2-dimethylaminoethyl) ether is obtained from dimethylamine and bis-(2-chloroethyl) ether, and from 2-dimethylaminoethyl chloride and sodium 2-dimethylaminoethoxide; the last method is also used for bis-(2-dimethylamino-1-methylethyl) ether and 2-dimethylaminoethyl 2-dimethylamino-1-methylethyl ether. Tributyl tin phosphorus dibutoxide is prepared by reacting Bu3SnCl with Na to give Bu3SnNa, and reacting this with (BuO)2PCl to give Bu3SnP(OBu)2.

    HYDROLYSIS OF DIALKYL CARBONATES
    18.
    发明专利
    HYDROLYSIS OF DIALKYL CARBONATES 未知

    公开(公告)号：GB2188315B

    公开(公告)日：1989-12-28

    申请号：GB8629583

    申请日：1986-12-10

    Applicant: UNION CARBIDE CORP

    Inventor： CRANDALL JOHN WORTH ,  DEITZLER JAMES EDWARD ,  KAPICAK LOUIS ANTHONY ,  POPPELSDORF FEDOR

    IPC: C07C69/36 ,  C07C29/09 ,  C07C29/147 ,  C07C31/04 ,  C07C67/36 ,  C07C67/48 ,  C07C67/60 ,  C07C69/96

    Abstract: A process is provided for the utilization of dialkyl carbonates formed as by-products in a continuous process for the synthesis of oxalic acid esters from nitrous acid esters and carbon monoxide and wherein the esters are subsequently used as intermediates in the production of commercially useful products, such as ethylene glycol. The process comprises contacting a mixture containing the by-product comprised of a dialkyl carbonate with an aqueous solution of a metal carbonate under hydrolyzing conditions whereby the dialkyl carbonate is converted to the corresponding alkanol and the metal carbonate is converted to metal bicarbonate. Upon distillation of the alkanol from the mixture the bicarbonate is converted back to the metal carbonate which can then be recycled from the bottoms to the hydrolyzing zone for use in further hydrolysis of by-product. The alkanol is recycled for use in the continuous process.

    HYDROLYSIS OF DIALKYL CARBONATES
    19.
    发明专利
    HYDROLYSIS OF DIALKYL CARBONATES 未知

    公开(公告)号：GB2188315A

    公开(公告)日：1987-09-30

    申请号：GB8629583

    申请日：1986-12-10

    Applicant: UNION CARBIDE CORP

    Inventor： CRANDALL JOHN WORTH ,  DEITZLER JAMES EDWARD ,  KAPICAK LOUIS ANTHONY ,  POPPELSDORF FEDOR

    IPC: C07C69/36 ,  C07C29/09 ,  C07C29/147 ,  C07C31/04 ,  C07C67/36 ,  C07C67/48 ,  C07C67/60 ,  C07C69/96

    Abstract: A process is provided for the utilization of dialkyl carbonates formed as by-products in a continuous process for the synthesis of oxalic acid esters from nitrous acid esters and carbon monoxide and wherein the esters are subsequently used as intermediates in the production of commercially useful products, such as ethylene glycol. The process comprises contacting a mixture containing the by-product comprised of a dialkyl carbonate with an aqueous solution of a metal carbonate under hydrolyzing conditions whereby the dialkyl carbonate is converted to the corresponding alkanol and the metal carbonate is converted to metal bicarbonate. Upon distillation of the alkanol from the mixture the bicarbonate is converted back to the metal carbonate which can then be recycled from the bottoms to the hydrolyzing zone for use in further hydrolysis of by-product. The alkanol is recycled for use in the continuous process.

    PROCESS FOR PREPARING BIS(N,N-DIALKYLAMINO)ALKYL ETHERS
    20.
    发明专利
    PROCESS FOR PREPARING BIS(N,N-DIALKYLAMINO)ALKYL ETHERS 未知

    公开(公告)号：DE2962498D1

    公开(公告)日：1982-05-27

    申请号：DE2962498

    申请日：1979-04-30

    Applicant: UNION CARBIDE CORP

    Inventor： POPPELSDORF FEDOR

    IPC: C07C217/08 ,  C07C67/00 ,  C07C213/00 ,  C07C93/04

    Abstract: A process is provided for producing bis-(N,N-dialkylamino)alkyl ethers of the formula (R2NR')2O, wherein R is a methyl or ethyl group and R' is a bivalent alkylene group having from 2 to 3 carbon atoms. The novel process is effected by a two-step, "one pot" reaction that utilizes a chloro-containing compound selected from the group consisting of sulfuryl chloride, thionyl chloride and chlorosulfonic acid together with R2NR'ONa as reactants, wherein R and R' are defined above. The resulting bis-ethers are useful as catalysts in the production of polyurethanes, especially cellular polyurethanes.

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