摘要:
The invention relates to a composite particle comprising 2 to 98% by weight of a base resin having softending point of -10.degree. to 120.degree. C. and a number average molecular weight of 600 or more and 98 to 2% by weight of an anisotropic crystalline polymer having a phase transition point of 60.degree. to 230.degree. C. and a number average molecular weight of 600 to 10,000 and capable for forming an anisotropic molten phase, the polymer having the specific structure in which a repeating unit of the formula:A--X--B (I)(wherein 100 to 50 mol % of A stands for defined mesogenic group, 0 to 50 mole % of A is p-phenylene, m-phenylene or trans-1,4-cyclohexylene, B is a defined spacer group, and X is ester bond, carbonate bond, amide bond, urethane bond or urea bond, and a repeating unit of the formula:R (II)in which R stands for bivalent to hexavalent hydrocarbon residue, are connected, in any successive orders and in a weight ratio of (I)/(II)=99.9/0.1 to 60/40, with each other through ester bond, carbonate bond, amide bond, urethane bond or urea bond, and end portions are occupied by a functional group as hydroxyl, carboxyl and the like. The composition particle is useful as powder coating, dry toner and the like.
摘要:
Benzyl pyridinium or ammonium salts of a non-nucleophilic anion are useful as a cationic polymerization initiator having a heat latency. A variety of resinous compositions containing this initiator is also disclosed.
摘要:
A process for preparing a polymerizable compound of the formula: ##STR1## or a polymerizable compound of the formula: ##STR2## is provided. These formed compounds are useful for the preparation of an acrylic resin which is low in viscosity and capable of forming a coating with excellent flexibility, weather resistance and water resistance.
摘要:
The invention concerns a thermosetting polyester resin capable of forming an anisotropic molten phase comprising a repeating unit of the formula: A-X-B alone, or a combination of the repeating unit of the formula: A-X-B and the repeating unit of the formula: R, adjoining two repeating units being connected each other through an ester bond, in which A represents a mesogenic group defined in the specification, B is a spacer group defined in the specification, X is an ester bond, and R represents a bivalent to hexavalent aliphatic, aromatic or alicyclic hydrocarbon residue, the end bondings of the connected repeating units being occupied by OH, COOH or their reactive derivatives and the sum of the resinous acid value and the OH value being 10 to 200.The invention also provides a powder coating resinous composition containing the abovesaid resin.
摘要:
A polymerizable vinyl monomer represented by the formula: ##STR1## wherein R represents a hydrogen atom or methyl group and n is a real number of 3 to 100, and preparation thereof. The vinyl monomer is useful for the preparation of vinyl resin which is highly reactive in crosslinking with a hardener and capable of resulting in a coating of resilient, tough and flexible nature.
摘要:
A modified polyester resin composition for coating use comprising a polyester resin modified with 5 to 30% by weight of the total solid of a branched fatty acid having 8 and more carbon atoms and with 5 to 30% by weight of the total solid of a cyclic ester represented by the formula: ##STR1## wherein R represents an alkylene group having 4 to 10 carbon atoms, the resin having a hydroxyl value of 70 to 300. The present resin composition is specifically useful as resinous vehicle in a top coat composition for plastic and other substrates.
摘要:
A resinous composition for coating use which is excellent in weather resistance and in low temperature curing properties, comprising a resin having resinous acid value based on carboxyl groups derived from its constituting tetrachlorophthalic acid of 2 to 8, a resinous acid value based on sulfonic acid groups derived from its constituting sulfophthalic acid of 0.5 to 5, and a functional group capable of reacting with a crosslinking agent to be compounded with the resin. The present resin is useful, in the combination form with a crosslinking agent, as a resinous vehicle of a coating composition which is excellent in curing properties, weather resistance, pigment dispersibility and storage stability and is specifically useful as an intermediate or top coat paint for automobile bodies or the like.
摘要:
Disclosed is an organic polymer microparticle which is obtainable from copolymerization of (a) an ethylenically unsaturated amine polymer obtained by reacting an amine polymer having at least two primary amino groups with 0.01 to 0.99 molar equivalents based on the amount of the primary amino group, of an unsaturation introducing monomer having at least one functional group which is reactive with the primary amino group and an ethylenic double bond with (b) 10 to 99000 parts by weight based on the total amount (100 parts by weight) of the amine polymer and the unsaturation introducing monomer, of a matrix forming ethylenically unsaturated monomer, in an aqueous medium. A process for producing the organic polymer microparticle is also disclosed.
摘要:
The present invention provides a powder coating composition which is suitable for precoated steel plates. The powder coating composition has excellent storage stability (e.g. blocking resistance) and provides a cured film having good weather resistance and a good balance of hardness and processability. The powder coating composition comprises;(I) 95 to 70% by weight of a polyester resin having a glass transition temperature of 40.degree. to 70.degree. C., prepared from (i) and acid component containing at least 80 mole % of an aromatic dicarboxylic acid with (ii) a polyol component which comprises(a) at least 50 mole % of neopentyl glycol, and(b) 1 to 10% by weight of a diol selected from the group consisting of a linear chain C.sub.8 -C.sub.16 alkylene diol, 2-methyl-1,8-octane diol and a mixture thereof, and(II) 5 to 30% by weight of a curing agent.
摘要:
A heat sensitive color developing material containing an electron donating color forming organic compound, a heat activating compound, and a color developer. These materials have excellent heat sensitivity in which color can be developed rapidly and can be produced and easily used.