Hoechst Aktiengesellschaft

Vianova Resins, Inc.

Ulrich Epple

Uwe Kubillus

Holger Schmidt

Harald Oswald

Manfred Marten

Arnold Schneller

Michael-Joachim Brekner

Karl-Friedrich Doessel

Harald Cherdron

Gerhard Brindoepke

Annegret Bittner

Epoxide-amine adducts having a proportion by mass of at least 20% of aliphatic epoxide or amine units which comprise at least one tertiary or quaternary carbon atom are disclosed. The adducts are employed as binders for coatings of relatively high environment-friendliness, if desired, for example, in a mixture with other hydroxy-functional binders, and as reactive component in corresponding adhesive compositions and sealing compounds.

Aliphatic epoxide-amine adducts with substantial side-chain branching,

Aliphatic epoxide-amine adducts with substantial side-chain, branching

Low molar mass copolymers which can be prepared by reacting one or more glycidyl esters of saturated aliphatic monocarboxylic acids having a tertiary or quaternary .alpha. carbon atom, and at least two unsaturated copolymerizable monomers of which at least one has at least one COOH group, under the conditions of a free-radical copolymerization, whereby the weight-average molar mass of the copolymers is below 3500 g/mol and the proportion of branched side chains in the copolymer is at least 20% by mass are disclosed. Also disclosed are methods of making these copolymers and the use thereof in binder and coating systems.

Hydroxyl-functional copolymers of low molar mass with substantial

Processes for the preparation of a functional polymer of low molar mass, which includes initially charging a first quantity M1 of a mixture including at least one component selected from olefinically unsaturated monomers B and compounds A which are not themselves copolymerizable but which are able to react with at least one of the monomers B to form a copolymerizable addition compound, metering in prior to or during polymerization a second quantity M2 of a mixture whose composition can be identical to or different from that of the first mixture M1 and which includes at least one component selected from olefinically unsaturated monomers B and compounds A, initiating polymerization by use of a polymerization initiator and optionally a chain transfer agent, conducting polymerization in the presence of an oligomer or polymer C, wherein the oligomer or polymer C is either formed in situ from one or more of A and B or is dissolved in at least one of the quantities M1 and M2, wherein at least one of M1 and M2 includes a monomer B. The polymers are useful in coating compositions.

Functional copolymers of low molar mass, processes for their

Low-viscosity copolymers useful in coating compositions, containing hydroxyl and carboxyl groups are obtained by free-radical polymerization of A) from 3 to 50% by weight of one or more glycidyl esters of aliphatic saturated monocarboxylic acids having a tertiary or quaternary .alpha. carbon atom, and B) from 97 to 50% by weight of at least two olefinically unsaturated copolymerizable monomers of which at least one contains at least one COOH group and at least one is sterically hindered, the quantity of COOH groups in component B exceeding the quantity of epoxy groups in component A to such an extent that the resulting copolymer has an acid number of at least 15 mg of KOH/g.

Copolymers containing hydroxyl and carboxyl groups by reacting glycidyl

Copolymers of olefinically unsaturated monomers, wherein at least one of the monomers is an isomer mixture of a cyclic or polycyclic olefinically unsaturated compound, which mixture contains a mass fraction from 8 to 50 per cent of at least one isomer of the main component in addition to this main component. The copolymers are useful, for example, in coating compositions.

Copolymers comprising cyclic or polycyclic monomers having a specific

Copolymers of particularly low viscosity, which can be prepared by a polymerization in bulk, in which one component (A) is initially charged and, in the further course of the polymerization, at least two olefinically unsaturated copolymerizable monomers (B) are added, of which at least one contains at least one COOH group and at least one is sterically-hindered are usefully employed in coating compositions.

Copolymers, their preparation, and their use in high-solids coating

Alloys of cycloolefin polymers and polyaryl ether ketones

For producing 100 parts by weight of a polymer blend 0 to 95 parts by weight of a finely divided polyolefin, 0 to 95 parts by weight of finely divided cycloolefin polymer and 0.1 to 99 parts by weight of a blockpolymer (which consists of monomeric units derived from norbornen and monomeric units derived from aliphatic monocycloolefins C.sub.n H.sub.2n and/or aliphatic 1-olefin, such as ethylene or propylene, are mixed and the mixture is processed under heat and shear forces. The block copolymer acts as phase mediator and contains in different blocks different proportions of the monomer units used.

Growing community of inventors

Wiesbaden, Germany

Ulrich Epple