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    Production of carboxylic acid esters of tertiary alcohols
    1.
    发明专利
    Production of carboxylic acid esters of tertiary alcohols 未知

    公开(公告)号：GB934917A

    公开(公告)日：1963-08-21

    申请号：GB1157462

    申请日：1962-03-27

    Applicant: BASF AG

    Inventor： SOENKSEN HANS ,  BAUMEISTER WILHELM ,  UMLAUF ERICH

    IPC: C07C69/04 ,  C07C69/14 ,  C07C69/22 ,  C07C69/24 ,  C07C69/38 ,  C07C69/54 ,  C08F220/18

    Abstract: Carboxylic acid esters of tertiary alcohols are prepared by reacting an isoolefine with a carboxylic acid having one to five carbon atoms and boiling at between 100 DEG and 200 DEG C. in the presence of a difficulty volatile strong acid having an equilibrium pressure of 1 atmosphere above 200 DEG C. as a catalyst, distilling the complete reaction mixture under reduced pressure and recovering the ester from the more readily volatile fraction. The distillation is preferably carried out at between 0,1 and 100 mm. Hg. pressure. The process may be continuous and the more difficulty volatile fraction containing the acid and the isoolefine from the more volatile fraction returned to the reaction zone. The amount of isoolefine in the reaction zone may be 60 to 95% of the theoretical amount. Suitable carboxylic acids include, formic, acetic, propionic, butyric, isobutyric, isovaleric, acrylic, methacrylic, chloracetic, a -chloracrylic acids. Isoolefines may be 2-methylbutene-(1), 2-methylbutene(2), isobutene. Suitable acid catalysts include sulphuric acid, chlorosulphonic acid, p-toluene sulphonic acid.

    Production of formaldehyde
    2.
    发明专利
    Production of formaldehyde 未知

    公开(公告)号：GB1135476A

    公开(公告)日：1968-12-04

    申请号：GB1524066

    申请日：1966-04-06

    Applicant: BASF AG

    Inventor： AMBROS DIETER ,  BAUMEISTER WILHELM ,  DUEMBGEN GERD ,  GERLOFF ULRICH

    IPC: C07C45/38 ,  C07C47/055

    Abstract: 1,135,476. Oxidation of methanol. BADISCHE ANILIN- & SODA-FABRIK A.G. 6 April, 1966 [7 April, 1965], No. 15240/66. Heading C2C. Production of formaldehyde by removing a fraction of lower boiling point than methanol from a crude liquid methanol, vaporizing the remainder, subjecting the resulting vapour to oxidative dehydrogenation with oxygen or a gas containing free oxygen in contact with a metallic silver catalyst, optionally in the presence of steam, at elevated temperature to form formaldehyde characterized by adding alkali to the crude methanol before, during and/or after removal of the said fraction of lower boiling point than methanol and before vaporization of the remainder. The liquid crude methanol used is obtained by conventional methods from carbon monoxide and hydrogen and may contain water and other specified impurities. The fraction of lower boiling point than methanol may be contaminated with iron carbonyl and boils in the range 55‹ to 64‹ C. The preferred alkalis are hydroxides, oxides or carbonates of the alkali metals or alkaline earth metals in solid form or dissolved in water and are added, at a temperature in the range 30‹ to 150‹ C., in amounts such that a pH of 11 to 13À5 is established in the crude liquid methanol. Conventional metallic silver catalysts are used in the oxidative dehydrogenation which is effected at from 400‹ to 750‹ C.

    3.
    发明专利
    未知

    公开(公告)号：FR1318496A

    公开(公告)日：1963-02-15

    申请号：FR892641

    申请日：1962-03-29

    Applicant: BASF AG

    Inventor： SOENKSEN HANS ,  BAUMEISTER WILHELM ,  UMLAUF ERICH

    IPC: C07C69/04 ,  C07C69/14 ,  C07C69/22 ,  C07C69/24 ,  C07C69/38 ,  C07C69/54 ,  C08F220/18

    Abstract: Carboxylic acid esters of tertiary alcohols are prepared by reacting an isoolefine with a carboxylic acid having one to five carbon atoms and boiling at between 100 DEG and 200 DEG C. in the presence of a difficulty volatile strong acid having an equilibrium pressure of 1 atmosphere above 200 DEG C. as a catalyst, distilling the complete reaction mixture under reduced pressure and recovering the ester from the more readily volatile fraction. The distillation is preferably carried out at between 0,1 and 100 mm. Hg. pressure. The process may be continuous and the more difficulty volatile fraction containing the acid and the isoolefine from the more volatile fraction returned to the reaction zone. The amount of isoolefine in the reaction zone may be 60 to 95% of the theoretical amount. Suitable carboxylic acids include, formic, acetic, propionic, butyric, isobutyric, isovaleric, acrylic, methacrylic, chloracetic, a -chloracrylic acids. Isoolefines may be 2-methylbutene-(1), 2-methylbutene(2), isobutene. Suitable acid catalysts include sulphuric acid, chlorosulphonic acid, p-toluene sulphonic acid.

    Porous plastics and their production
    5.
    发明专利
    Porous plastics and their production 未知

    公开(公告)号：GB864815A

    公开(公告)日：1961-04-06

    申请号：GB2417958

    申请日：1958-07-28

    Applicant: BASF AG

    Inventor： BAUMEISTER WILHELM ,  GAETH RUDOLF ,  HAARER ERICH ,  SCHWARZ ADOLF

    IPC: C08J9/02

    Abstract: Polymers of tertiary butyl esters of monocarboxylic acids which contain one ethylenic double bond may be expanded by heating above their sofetning and decomposition ranges so that isobutylene is split off and expands the polymers. The polymers may be homopolymers of tertiary butyl acrylate and tertiary butyl methacrylate and copolymers of these monomers with vinyl chloride and vinylidene chloride and crosslinking agents such as divinylbenzene. The polymers may be mixed with other polymers, e.g. polyvinyl chloride, polyvinylidene chloride and polyisobutylene; plasticisers, e.g. phthalic acid esters; and synthetic rubbers, e.g. copolymers of butadiene and acrylonitrile. Expansion may be effected by treating with steam or hot, non-solvent liquids, by infra-red heating or high frequency heating and the products used for heat and sound insulation.ALSO:Polymers of tertiary butyl esters of monocarboxylic acids which contain one ethylenic double band may be expanded by heating above their softening and decomposition ranges so that isobutylene is split off and expands the polymers. The polymers may be homopolymers of tertiary butyl acrylate and tertiary butyl methacrylate and copolymers of these monomers with vinyl chloride, vinylidene chloride and cross linking agents such as divinylbenzene. The polymers may be mixed with other polymers, e.g. polyvinyl chloride, polyvinylidene chloride and polyisobutylene; plasticisers, e.g. phthalic acid esters; and synthetic rubbers, e.g. copolymers of butadiene and acrylonitrile. Expansion may be effected by treating with steam or hot, non-solvent liquids, by infra red heating or high frequency heating, and the products used for heat and sound insulation.

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