Abstract: Perhalogenated dioxoles, halogenated dioxolanes, a process for making the dioxoles and dioxolanes, and polymers of dioxole and dioxolane monomers.

Abstract: According to the present invention, an improved method for providing acrylic copolymer resins is provided in which the polymerization solvent comprises a blend of methyl isobutyl ketone and certain alkyl-substituted benzene solvents. The monomers comprise hydroxy-substituted alkyl (meth)acrylate monomers and non-hydroxy substituted alkyl (meth)acrylate monomers, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in acrylic coatings. The polymerization solvent can remain in the resin to become a solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides improved electrical resistivity, improved solvency and decreased surface tensions over prior art polymerization solvents.

Abstract: What is disclosed are a method for the polymerization of methyl methacrylate or a monomer mixture predominantly comprising methyl methacrylate, which comprises polymerizing in the presence of a free radical-forming initiator and in the presence of a sterically hindered amine containing at least one group having the formula ##STR1## wherein R is the same or different alkyl, R' is hydrogen or alkyl, and A is a 2- or 3-membered alkylene chain which may be bound to a further organic group, polymer sheets prepared by such a method, and the use of such sheets in solaria.

Abstract: There is disclosed 4-(diallylamino)pyridine and water-soluble polymers made therefrom. The polymers are useful as reagents or catalysts.

Abstract: Inert cross-linked copolymer able to absorb and then progressively release a pharmaceutically active substance, wherein it is constituted by a powder of a cross-linked copolymer comprising30 to 80% by weight of monounsaturated alkyl acrylate and/or methacrylate;5 to 68% by weight of acrylic and/or methacrylic acid; and2 to 15% by weight of bifunctional or trifunctional acrylate and/or methacrylate polymerized in accordance with free radical polymerization mechanisms.

Abstract: The invention relates to new cationic ampholytic water-soluble tetrapolymers for cosmetic compositions for treating keratinous fibers and resulting from copolymerization of:a moles of acrylamide, AAM,b moles of 2-acrylamido-2-methyl-propane sulfonic acid, AMPS,b moles of a basic monomer selected from the three following monomers: dimethylaminoethyl acrylate, ADAME, N-(3-dimethylamino-1-propyl) acrylamide, DMAPA, N-(3-dimethylamino-1-propyl) methacrylamide, DMAPMA, c moles of a cationic monomer selected from the four following monomers:N,N,N-3-trimethylacrylamido-propanaminium chloride, APTAC,N,N,N-3-trimethylmethacrylamido-propanaminium chloride, MAPTAC,N,N,N-2-trimethylacryloyloxy-ethanaminium chloride, CMA, dimethylaminoethyl acrylate hydrochloride, CHA, with the following relations:a+2b+c=10030<a<7510<b<255<c<20.

Abstract: A hot-melt adhesive especially useful in the construction of disposable diapers contains a vinyl polymer of 40-90% by weight of a C.sub.1 -C.sub.12 alkyl acrylate and 10-60% by weight of an alpha-olefin of C.sub.20 -C.sub.40, wherein the alkyl acrylate may be partially replaced with vinyl acetate or with a C.sub.6 -C.sub.12 olefin or with mixtures thereof, provided that the polymer contain at least 10% by weight of the alkyl acrylate. The adhesive may also contain a tackifying resin, a wax, an oil or a stabilizer depending on the specific end-use desired. In a preferred embodiment the polymer contains 20-45% by weight of the alpha-olefin.

Abstract: A process for producing acrylic polymers which have high thermal stability, are free of defects and have a low level of unreacted monomer. The process includes the polymerization at a high production rate of a methyl methacrylate syrup in the presence of a mixture of two peroxide initiators. The first initiator has a 5-minute half-life at temperatures between about 75.degree. C. to 100.degree. C. and emits a maximum of 1 mole of carbon dioxide per 2 moles of free radicals. The second initiator has a one minute half-life at temperatures of between about 105.degree. C. to about 125.degree. C. and emits a maximum of 1 mole of carbon dioxide per 1 mole of free radicals.

Abstract: A fluorine-containing copolymer comprising chlorotrifluoroethylene, 2,2,3,3-tetrafluoropropyl vinyl ether and 0 to 25% by mole of a vinyl ether having a functional group selected from the group consisting of hydroxyl, glycidyl and amino. The fluorine-containing copolymer has a good compatibility with methyl methacrylate polymers and gives, in combination with methyl methacrylate polymers, products such as coating film, self-supporting film and molded article, which have good stain resistance and transparency.

Abstract: A diethynylated phenylbenzimidazole compound having the formula: ##STR1## where Y is phenyl, cyclohexyl, adamantyl or phenoxylatedphenyl of the formula C.sub.6 H.sub.5 (OC.sub.6 H.sub.4)n (n=1 to 3) and where R1, R2 and R3 are ethynyl, phenoxyethynyl, phenylethynyl, or hydrogen, and further wherein at least one of said R1, R2 or R3 is not hydrogen. The compounds can be cured to form thermoset polymers which are stable at temperatures above 300.degree. C.

Abstract: An original plate for dry offset printing comprising a substrate suitable for preparation of an offset printing plate and a film formed on the substrate. The film consists essentially of a copolymer formed from at least 40% of a monomer of the formula: ##STR1## wherein n is an integer of 2 to 7 and R is hydrogen or methyl; and at least one other ethylenically unsaturated monomer.

Abstract: A fluorine-containing copolymer comprising monomeric units of(a) tetrafluoroethylene,(b) 8 to 15% by weight of hexafluoropropene on the basis of the weight of the copolymer, and(c) 0.2 to 2% by weight of a fluoroalkyl vinyl ether of the formula:CF.sub.2 .dbd.CF--O--(CF.sub.2).sub.n --CF.sub.2 X (I)wherein X is hydrogen or fluorine, and n is an integer of 3 to 9 on the basis of the weight of the copolymer, which has improved stress crack resistance, and flex resistance as well as good moldability.

Abstract: An optical material comprising a copolymer of:(1) ethylene,(2) at least one of tetrafluoroethylene and chlorotrifluoroethylene and(3) olefin having at least one fluoroalkyl group,and a cladding material as used in assembling an optical fiber which comprises the copolymer as defined in above.

Abstract: Crosslinkable fluorine-containing copolymers comprising copolymerized units of(a) a vinyl ester of a heavily branched carboxylic acid,(b) a vinyl ester of a short-chain carboxylic acid and(c) of a fluoroolefin, the vinyl ester groups of component (b) having been converted into OH groups by solvolysis of the copolymer. The copolymers are suitable for coating purposes of any type, in particular as binders in surface-coating systems for industrial surface-coatings.

Abstract: This invention relates to vinyl-type interpolymers having an overall carbon/oxygen atom ratio of about 2 to about 4, which is preferably derived from 2 types of vinyl monomers:(1) at least one vinyl-type monomer present in the interpolymer at about 50 mole % or greater and having a carbon/oxygen atom ratio of about 3 or less ("hydrophilic" monomer), and(2) at least one vinyl-type monomer present in the interpolymer at about 50 mole % or less and having a carbon/oxygen atom ratio of about 3 or more ("hydrophobic" monomer).Typical examples are vinyl acetate/vinyl fatty ester copolymers and vinyl acetate/dialkyl maleate copolymers. This invention also relates to uses for these compositions, particularly in the demulsification of W/O emulsions.

Abstract: The invention relates to 2-substituted 5-vinylpyrimidines of the formula ##STR1## wherein X is 2-pyridyl or 2-pyrimidyl, unsubstituted or substituted by methyl or ethyl groups. The compounds of formula (I) are suitable for the preparation of complex-forming or complexed, uncrosslinked or crosslinked polymers. Complexed polymers obtainable therefrom may be used as catalysts. Polymers complexed with Pd are particularly suitable for transvinylation reactions. Non-complexed polymers obtainable from compounds of formula (I) are suitable for use as metal ion extractors for different applications.

Abstract: The invention relates to compositions containing 80-30 weight % of bismaleimide-compounds, 5-60 weight % maleimide-amide compounds and 1-10 weight % maleic anhydride derivative. The invention further relates to the preparation of such compositions and to homogeneous curable compositions comprising bismaleimide/maleimide-amide/maleic anhydride compositions according to the invention. The obtained copolymers show good chemical resistance and a high heat distortion temperature.

Abstract: N-chlorolactams, -amides, and -carbamates are photolyzed in alcoholic solution to provide N-(alpha-alkoxyalkyl)-substituted derivatives. These derivatives are interacted with hydroxylated acrylate or methacrylate esters to yield monomers which may be polymerized in the presence of an appropriate initiator. Many of the monomers are water soluble and are useful to prepare polymeric films having unique properties.

Abstract: A piezoelectric polymeric material having utility in ultrasonic transducers is disclosed which consists essentially of a copolymer of about 65 to 82 mol percent of vinylidene fluoride and about 35 to 18 mol percent of ethylene trifluoride. The polymeric material is formed into a film of the desired thickness and then heated to a temperature greater than about the crystal phase transition temperature and less than about the melting-point temperature to produce a heat-treated film. The heat-treated film is poled in an electrical field of from about 50 to about 1,500 kilovolts per centimeter to give the film a thickness extensional electromechanical coupling factor of at least 0.05 and preferably greater than 0.2.

Abstract: Tetrafluoroethylene fine powder resins are described which have surprisingly high extrusion pressures and molecular weights which make them useful in post-paste extruded stretching operations. The resins are made by using a permanganate polymerization initiator and controlling its rate of addition so that the reaction slows down at the end of the polymerization.