摘要:
Optically active &bgr;-type tris-(2,3-epoxypropyl)-isocyanurate is obtained by a method of reacting isocyanuric acid with an optically active epihalohydrin, or a method of optically resolving a racemic modification of tris-(2,3-epoxypropyl)-isocyanurate by using an amylose or cellulose derivative. It is a method for producing a high melting point type tris-(2,3-epoxypropyl)-isocyanurate obtained by mixing two enantiomers of optically active &bgr;-type tris-(2,3-epoxypropyl)-isocyanurate.
摘要:
Optically active &bgr;-type tris-(2,3-epoxypropyl)-isocyanurate is obtained by a method of reacting isocyanuric acid with an optically active epihalohydrin, or a method of optically resolving a racemic modification of tris-(2,3-epoxypropyl)-isocyanurate by using an amylose or cellulose derivative. It is a method for producing a high melting point type tris-(2,3-epoxypropyl)-isocyanurate obtained by mixing two enantiomers of optically active &bgr;-type tris-(2,3-epoxypropyl)-isocyanurate.
摘要:
.beta.-form tris-(2,3-epoxypropyl)-isocyanurate crystals containing from 2 to 15 wt % of .alpha.-form tris-(2,3-epoxypropyl)-isocyanurate in the interior of the crystals.
摘要:
A method for reducing an organic solvent remaining in tris-(2,3-epoxypropyl)-isocyanurate crystals, which comprises pulverizing crystal particles of tris-(2,3-epoxypropyl)-isocyanurate while evaporating a volatile component from the surface of the particles.
摘要:
A resin composition for powder coating, which comprises the following components (A), (B) and (C): (A) a carboxyl group-containing resin having a number average molecular weight of from 1,000 to 20,000, an acid value of from 5 to 200 and a glass transition temperature of from 30 to 120° C.; (B) tris(&bgr;-methylglycidyl) isocyanurate of the formula (1): (C) as a ring opening polymerization inhibitor, at least one compound selected from the group consisting of amines having in their molecules a bond of the formula (2): and onium salts.
摘要:
A resin composition for powder coating, which comprises the following components (A), (B) and (C): (A) a carboxyl group-containing resin having a number average molecular weight of from 1,000 to 20,000, an acid value of from 5 to 200 and a glass transition temperature of from 30 to 120.degree. C.; (B) tris(.beta.-methylglycidyl) isocyanurate of formula (1); and (C) as a ring opening polymerization inhibitor, at least one compound selected from the group consisting of amines having in their molecules a bond of formula (2); and onium salts.
摘要:
A resin composition for powder coating, comprising(A) a carboxyl group-containing resin having a number average molecular weight of 1000 to 20000, an acid value of 5 to 200 and a glass transition temperature of 30 to 120.degree. C.,(B) bis(.beta.-methylglycidyl)terephthalate of the formula (1): ##STR1## as a curing agent, and (D) at least one compound selected from the group consisting of amines having the linkage of the formula (2): ##STR2## in the molecule, a triarylphosphines and onium salts as a ring-opening polymerization inhibitor, the equivalent ratio of (.beta.-methylglycidyl group of the component (B))/(carboxyl group of the component (A)) being 0.5 to 3.0. The composition can give a product of curing excellent in impact resistance, weathering resistance and so on.
摘要:
A process for producing β-form tris-(2,3-epoxypropyl)-isocyanurate crystals containing from 2 to 15 wt % of α-form tris-(2,3-epoxypropyl)-isocyanurate in the interior of the crystals, which comprises the following steps (A), (B), (C) and (D): (A) a step of reacting cyanuric acid with epichlorohydrin to form an addition product of cyanuric acid and epichlorohydrin, followed by dehydrochlorination to obtain a reaction solution containing tris-(2,3-epoxypropyl)-isocyanurate, (B) a step of removing epichlorohydrin from the reaction solution containing tris-(2,3-epoxypropyl)-isocyanurate obtained in step (A), and dissolving the obtained tris-(2,3-epoxypropyl)-isocyanurate in a solvent, (C) a step of gradually cooling the liquid obtained in step (B) at a cooling rate within 20° C./hr for crystallization, followed by filtration to obtain crystals, and (D) a step of washing and drying the crystals obtained in step (C).
摘要:
A method for reducing organic solvents remaining in tris-(2,3-epoxypropyl)-isocyanurate crystals, which comprises pulverizing, as a material, crystal particles of tris-(2,3-epoxypropyl)-isocyanurate obtained by a recrystallization method, while evaporating a volatile component from the surface of the particles.
摘要:
A resin composition for powdery coatings, which contains the following components (A), (B) and (C): (A) a carboxyl group-containing resin having a number average molecular weight of from 1000 to 20000, an acid value of from 5 to 200 and a glass transition temperature of from 30 to 120° C., (B) a poly-&bgr;-methylglycidyl compound having at least two structures represented by the formula (1) in one molecule: and (C) a sterically-hindered amine as a heat yellowing inhibitor.