Abstract: The invention relates to new N-alkyl-N-(meth)acryloyloxyalkylcarboxamides of aromatic carboxylic acids and aromatic carboxylic acid anhydrides, their preparation and formulations of these compounds for use as adhesives for the treatment of dental hard substance.

Abstract: The present invention relates to novel polymers which are adducts of an unsaturated hydrocarbon, wherein the novel polymers are produced by contacting cyclic carbonyl monomers with an unsaturated hydrocarbon to form novel cyclic carbonyl polymers having an Mn of about 500 to about 10.sup.7.

Abstract: The invention relates to a process for the manufacture of coatings by radiocrosslinking. A radio-crosslinkable composition (C) is produced first of all by mixing at least one (meth)acrylic compound (A) with a reactive diluent system comprising at least one mono(meth)acrylic carbonate (B) corresponding to the general formula (I): ##STR1## in which: R.sub.1 denotes H or CH.sub.3R.sub.2 denotes an alkylene ether or alkylene chain which has a total number of carbon atoms of between 2 and 6,n denotes an integer between 1 and 6.The composition (C) is next applied onto a substrate and is then radiocrosslinked, preferably using UV radiation.Another subject of the invention is the crosslinkable compositions (C) in which the compound (A) and the carbonate (B) are not simultaneously 2,3-carbonyldioxypropyl 2-methacryloyloxyethyl carbonate, and carbonates of general formula (I) in which R.sub.2 denotes (CH.sub.2).sub.m and in which m and n are integers such that 2.ltoreq.m.ltoreq.6, 1.ltoreq.n.ltoreq.6 and n.noteq.

Abstract: Polymer comprising cyclopentanedioxocarbonyl vinylene units are prepared by ring opening metathesis polymerization of the endo stereoisomer of norbornene dioxocarbonyl monomer. Such polymers prepared in bulk or solution are useful as engineering thermoplastics for injection molding and solution casting. Such polymers can also be polymerized in molds.

Abstract: Polymers comprising units of norbornene diol vinylene are prepared by hydrolysis of precursor polymer comprising units of norbornene diol ester vinylene or norbornene dioxocarbonyl vinylene in the presence of an alkaline agent.

Abstract: Polymers comprising units of diesters of cyclopentane diol vinylene prepared by metathesis ring opening polymerization of diesters of norbornene diol exhibiting a glass transition temperature of at least 100.degree. C. are useful as engineering thermoplastics.

Abstract: The invention relates to modified polymers based on polyvinylene carbonate and/or polyhydroxymethylene, the modification being effected by particular alkoxylated compounds incorporated into the polymer. These polymers, for the preparation of which, according to the invention, particular dispersion stabilizers are used, are suitable, inter alia, as carriers for biologically active substances or for affinity chromatography.

Abstract: Polycyclopentadienylene vinylene exhibiting solvent resistance, e.g. to chlorinated solvents such as chloroform and methylene chloride and to amine solvents such as dimethylformamide, is prepared by removal of acid groups from precursor polymer having norbornene dioxo derivatives.

Abstract: The invention relates to modified polymers based on polyvinylene carbonate and/or polyhydroxymethylene, the modification being effected by particular alkoxylated compounds incorporated into the polymer. These polymers, for the preparation of which, according to the invention, particular dispersion stabilizers are used, are suitable, inter alia, as carriers for biologically active substances or for affinity chromatography.

Abstract: Copolymers, adaptable for use as molding compositions for optically readable data storage media, said copolymers being free of aromatic groups and comprising;(A) 5 to 95 percent by weight of at least one ester of the formula ##STR1## wherein R.sub.1 is an unsubstituted or alkyl substituted alicycle having from 5 to 19 carbon atoms, a homopolymer of such an ester having a Vicat softening temperature above 80.degree. C.;(B) 90 to 5 percent by weight of at least one ester of the formula ##STR2## wherein R.sub.2 is hydrogen or methyl and R.sub.3 is a linear or branched aliphatic group having from 2 to 22 carbon atoms, a homopolymer of such an ester having a Vicat softening temperature below 90.degree. C.;(C) 0 to 50 percent by weight of methyl methacrylate; and(D) 0 to 20 percent by weight of an oprotic monomer having a polar group.

Abstract: Copolymers having improved machining and water resistant properties are produced using a monomer containing an adduct protecting group, particularly an alkyl boronic acid adduct, of glyceryl acrylate or glyceryl methacrylate, in combination with an alkyl acrylate or methacrylate, and optionally a glycidyl acrylate or methacrylate. After machining and shaping, the adduct is removed to provide a hydrogel useful as a contact lens material.

Abstract: Novel dibasic organic acid diesters of the dienol form of biacetyl and methods for their preparation are provided. The compounds find use as monomers in homo- and copolymers, and the resulting polymers may be further modified to produce a variety of products.

Abstract: Copolymers having improved machining and water resistant properties are produced using a monomer containing an adduct protecting group, particularly an alkyl boronic acid adduct, of glyceryl acrylate or glyceryl methacrylate, in combination with an alkyl acrylate or methacrylate, and optionally a glycidyl acrylate or methacrylate. After machining and shaping, the adduct is removed to provide a hydrogel useful as a contact lens material.

Abstract: A method for polymerizing olefinically unsaturated carboxylic acids containing at least one activated carbon to carbon olefinic double bond and at least one carboxyl group in an organic media in which said carboxylic acid is at least partially soluble, and a nonsolvent for the polymers of said carboxylic acid, in the presence of a free radical forming catalyst and a surface active agent having an HLB value in the range of less than 10.

Abstract: Reaction products of glycidyl (meth)acrylate with half esters containing carbonate groups are components of anaerobically-setting adhesive compositions based on (meth) acrylic esters and organic peroxides.

Abstract: Vinylene carbonate may be polymerized in bulk, in solution or in dispersion by means of free radical forming initiators. Suitable comonomers are vinyl compounds. The polymerization is carried out generally at a temperature of 40 to 170.degree. C. The dispersing agents used in the dispersion polymerization are organic compounds which are liquid under normal conditions and which do not dissolve vinylene carbonate. Homo- and copolymers of vinylene carbonate may be used as starting material for the preparation of homo- and copolymers of vinylene glycol.