Abstract:
Novel rust inhibitors for hydrocarbon fuels and oils are provided. Also, novel photo-adducts of dimethylmaleic anhydride and olefins useful as rust inhibitors.
Abstract:
Novel polyimides and polyimides-amides, and molding compositions are prepared from novel dianhydrides such as tricyclo[6.4.0.0.sup.2,7 ] dodecane-3,6-diphenyl-1,8,4,5-tetracarboxylic acid dianhydride and tricyclo [6.4.0.0.sup.2,7 ] dodecane-1,8,4,5-tetracarboxylic acid dianhydride, dicarboxylic acids and diamines. The novel polyimides and polyimides-amides are useful as engineering plastics.
Abstract:
Molybdenum compounds, particularly molybdenum sulfide, molybdenum silicide, molybdenum selenide and molybdenum telluride are useful Friedel-Crafts catalysts for the aralkylation of aromatics to produce polybenzyls, the manufacture of aromatic ketones, aromatic sulfones and aromatic esters.The foregoing processes are carried out at a temperature of about 60.degree. to 250.degree. C. and at a catalyst concentration of about 0.1 to 15% by weight of reactants. The reaction products are useful as laminates, herbicides and bactericides.
Abstract:
This invention relates to copolyimides-polyamides prepared from mixtures of tetramethylcyclobutane-1,2,3,4-tetracarboxylic dianhydride (TMCDA), aromatic or aliphatic dianhydrides, and dicarboxylic acids or their esters or acid chlorides. These dianhydride-dicarboxylic acid mixtures are then reacted with aliphatic or aromatic diamines. These novel copolyimides-polyamides are useful in the preparation of molded articles, fibers, films, laminates and coatings.
Abstract:
Novel polyimide-amide polymers and copolymers and molding compositions are prepared from tetramethylcyclobutane-1,2,3,4-tetracarboxylic dianhydride, dicarboxylic acids and mixtures of diamines. Also glass and graphite filled polymers are prepared. The polyimide-polyamide polymers and copolymers are useful as engineering plastics.
Abstract:
Novel rust inhibitors for hydrocarbon fuels and oils are provided. Also, novel photo-adducts of dimethylmaleic anhydride and olefins useful as rust inhibitors.
Abstract:
Novel copolyimides are prepared from mixtures of tetramethyl-cyclobutane-1,2,3,4-tetracarboxylic dianhydride and other aliphatic and aromatic dianhydrides. Their dianhydride mixtures are reacted with aliphatic or aromatic diamines to form copolyimides which are useful as engineering plastics.
Abstract:
A thiocarbamate compound selected from the group of thiocarbamate compounds consisting of 1,3,4-thiadiazole-2-thiol-5- monothiocarbamate; 1,3,4-thiadiazole-2,5-dithiocarbamate; 1,3,4-thiadiazole-2-thiol-5-mono(dithiocarbamate) and 1,3,4-thiadiazole-2,5-di(dithiocarbamate). These thiocarbamate compounds can be represented by the general formula ##STR1## where R' is a monovalent radical individually selected from the group consisting of a hydrogen radical and the radical ##STR2## wherein X is selected from the group consisting of .dbd.O and .dbd.S, and R" is selected from the group consisting of hydrogen moieties, alkyl moieties containing 1 to 22 carbon atoms, and aralkyl moieties, alkylated aryl moieties, heterocyclic alkyl moieties, cycloalkyl moieties containing 6 to 40 carbon atoms joined to the ##STR3## group, the said moieties being unsubstituted and substituted, said substitutions being individually selected from the group consisting of halogen moieties, nitro moieties, alkoxy moieties, alkyl moieties, and carboalkoxy moieties.
Abstract translation:选自由1,3,4-噻二唑-2-硫醇-5-一硫代氨基甲酸酯组成的硫代氨基甲酸酯化合物的硫代氨基甲酸酯化合物; 1,3,4-噻二唑-2,5-二硫代氨基甲酸酯; 1,3,4-噻二唑-2-硫醇-5-单(二硫代氨基甲酸酯)和1,3,4-噻二唑-2,5-二(二硫代氨基甲酸酯)。 这些硫代氨基甲酸酯化合物可以由通式“IMAGE”表示,其中R'是单独选自氢基和基团的单价基团,其中X选自= O和= S 并且R“选自氢部分,含有1至22个碳原子的烷基部分,和芳烷基部分,烷基化芳基部分,杂环烷基部分,含有6至40个碳原子的环烷基部分连接到” 所述部分是未取代的和取代的,所述取代分别选自卤素部分,硝基部分,烷氧基部分,烷基部分和烷氧基部分。
Abstract:
4-Peroxyester derivatives of trimellitic anhydride and polymers derived by use of these derivatives as dual function reagents for polymerization and introduction of the phthalic anhydride moiety.