摘要:
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.
摘要:
The present invention provides a clear liquid coating composition comprising (a) a compound having at least 2 carboxyl groups, (b) a compound having at least 2 epoxy groups, (c) 0.01 to 3.0 parts by weight based on 100 parts by weight of the total resin solid of an onium salt, which is used as a top coating composition for a pre-coated surface.
摘要:
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.
摘要:
The present invention discloses a subbing coating composition for polyester films comprising:I polymer A having attached to its backbonecarboxyl groups and/orgroups which form carboxyl groups upon hydrolysis anda polymer B having attached to its backbone --SO.sub.3 X and/or --PO.sub.3 XY groups, whereinX and Y are identical or different and denote an alkali metal, ammonium or hydrogenorII a polymer A' having attached to its backbonecarboxyl groups and/or groups which form carboxyl groups upon hydrolysis, and--SO.sub.3 X and/or --PO.sub.3 XY groups, wherein X and Y are identical or different and denote an alkali metal, ammonium or hydrogenandIII an organic compound C having at least two free hydroxy groups, wherein the coating composition does not comprise addition polymerizable compounds.
摘要:
The present invention provides a curable resin composition which provides cured film having not only excellent acid resistance but also good weather resistance, good mar resistance and seal cracking resistance because of its high extensibility. The curable resin composition comprises (a) 20 to 80% by weight of a polymer having carboxyl and carboxylate groups; and (b) 2% to 80% by weight of a polymer having hydroxyl and epoxy groups. The present invention also provides a process for forming a cured film using the resin composition.
摘要:
The present invention provides, a curable resin composition and a process for forming a cured film therefrom wherein the cured film has not only excellent acid resistance but also good weather resistance, good mar resistance and sealer cracking resistance because of its high extensibility, The curable resin composition comprises (a) 20 to 80% by weight of a polymer having carboxyl and carboxylate groups; and (b) 20 to 80% by weight of a polymer having hydroxyl and epoxy groups.
摘要:
The thermosetting resin composition of the present invention comprises: a polymer (A) containing at least one monomer selected from ethylenically unsaturated dicarboxylic anhydride, mono-ester thereof and mono-amide thereof as a repeating unit; and a polymer (B) containing an addition-polymerizable oxazoline and a hydroxyl group-containing monomer as repeating units, which can rapidly form a cured film excellent in acid rain resistance and other properties at relatively low temperature of 70.degree. to 140.degree. C. The further incorporation of a basic compound (C) and/or a compound (D) selected from the group consisting of a monohydric alcohol, a .beta.-diketone and an ortho-carboxylic ester to this thermosciting resin composition can give a remarkably improved storage stability to this resin composition as a one-part type composition. This thermosciting resin composition can exhibit excellent properties as a top clear coating for motor vehicle.
摘要:
A coating varnish composition comprising (A) a polymer obtained by polymerizing one or more unsaturated carboxylic acids (a) with one or more unsaturated monomers (b), and (B) at least one additive selected from triazole derivatives, thiadiazole derivatives, and benzothiazole derivatives, and an antifouling coating composition comprising (i) said coating varnish and (ii) an antifouling agent containing a copper compound as a major component, do not show a danger of organotin copolymers, but provide a coating excellent in coating consuming properties and antifouling properties for a long period of time without causing gelation when mixed with a copper compound.
摘要:
A coating varnish composition comprising (A) a polymer obtained by polymerizing (a) at least one unsaturated acid anhydride and (b) at least one other unsaturated monomer, and (B) at least one additive selected from triazole derivatives, benzothiazole derivatives, thiadiazole derivatives, polyethers and carboxylic acid anhydride derivatives, is capable of forming a coating which has no danger of poisoning like the organotin copolymers, shows a coating consuming property and antifouling performance comparable with those of the organotin copolymers and does not gel even when mixed with a copper compound.
摘要:
There is disclosed a composite of 1) a polymer containing repeating units derived from a vinyl carboxylic ester having at least one organo terminated poly(alkylene oxide) side chain with the proviso that the poly(alkylene oxide) is present in an amount greater than 35 mole percent of the total of all backbone monomer units and alkylene oxide units in the polymer and 2) a metal oxide wherein the metal oxide comprises between about 1 and about 60 percent by weight of the composite. The composites can be made by a process comprising the steps of:combining the described polymer and a metal oxide precursor in a solvent solution;casting or coating the resulting solution onto a substrate;curing the resulting sample to form acomposite of the polymer and the metal oxide. Optionally, the composite can be removed from the substrate to form a transparent free standing film. These composites have a variety of desirable properties. Optionally, a salt may be added to produce hard, abrasion resistant, transparent, antistatic coatings or films.