摘要:
Disclosed is a novel curing system which is not associated with decomposition or production of low molecular materials. The curing system employs an aqueous composition which comprises (a) a compound having in one molecule at least two carbonylcyclic urea groups represented by the following formula (1) ##STR1## [wherein n is an integer of 0 to 5, X which may be the same or different and represents oxygen atom, a sulfur atom or --NR.sub.1 -- in which R.sub.1 is a hydrogen atom, an alkyl, hydroxyalkyl or alkylene group having 1 to 5 carbon atoms.] and (b) a basic resin which has a functional group reactive with an isocyanate group and is water soluble or water dispersible by neutralizing. The present invention also provides an aqueous composition comprising a basic resin (c) which has a functional group reactive with an isocyanate group and has in one molecule at least two carbonylcyclic urea groups represented by the following formula (1) ##STR2## wherein n and X are the same as mentioned above, and which is water soluble or water dispersible by neutralizing.
摘要:
The present invention provides a cationic electrocoating composition which cures at the preferred curing temperature range and provides superior curing properties and cured film properties. The cationic electrocoating composition of the present invention comprises a resinous component and an aqueous medium, wherein the resinous component is composed of one or more polymers and has as a whole an active hydrogen containing group, a cationic group and a substituted group and at least one of the polymers comprises a vinyl polymer which has 5 to 1,000 substituted acylamide groups.
摘要:
The present invention provides a micro gel particle having a cationic charge, prepared by a radical polymerization. The micro gel particle is obtained in the form of an aqueous dispersion. The micro gel particle dispersion is prepared by dispersing or emulsifying in an aqueous medium (A) a cationic aqueous resin and (B) a resin having at least two polymerizable vinyl groups and a number average molecular weight of 400 to 20,000, followed by radical-polymerizing.
摘要:
Disclosed is a process for preparing crosslinked resin particles which comprises dispersing a resin having both a water-dispersible function and a self-crosslinkable function in one molecule in an aqueous medium and then three-dimensionally crosslinking.
摘要:
Disclosed is a water-borne coating composition having improved pigment dispersibility. The water-borne coating composition comprises a pigment and a water dispersible or water soluble resin, wherein said pigment is preliminary ground with crosslinked resin particles having ionic groups on the surface.
摘要:
A resin composition comprises a resin (A) and a resin (B) as constituents, said resin (A) having a number average molecular weight of 1,000 to 35,000 and being at least one member selected from the group consisting of following (A1) and (A2): (A1) a polyester polyol, a polyether polyol, a polycarbonate polyol, a polyurethane polyol, a polyolefin polyol and an acrylic polyol, (A2) a polymer obtained by reacting said (A1) with a compound having at least one functional group selected from the group consisting of isocyanato, carboxyl and epoxy groups within a molecule thereof, a dialkyl carbonate, a cyclic carbonate, an alcohol, or a mixture of these, and said resin (B) having a sulfonium group and a propargyl group within the molecule thereof.
摘要:
It is an object of the present invention to provide a method of forming a coating film by which a coating film excellent in weathering resistance, light degradation resistance, smoothness and the like can be formed on the outer panel portion of an article to be coated such as a car, and a coating film excellent in rust prevention can be formed on the inner panel portion (bag-structured portion) of the article to be coated, with the interface between the outer and inner panel portions of the article being excellent in rust prevention and finish as well, and by which resources saving and coating cost reduction can be expected.
摘要:
A cationic water-dispersible resin having quarternary ammonium groups is produced by reacting an acid-addition salt of a polymeric tertiary amine derived from a partially epoxidized polybutadiene-based polymer with an aliphatic secondary amine. The cationic water-dispersible resin is useful for preparing pigment paste and coating compositions to be used in cathodic electrodeposition coating systems.
摘要:
A water-based paint composition comprising:(A) a reaction product prepared by reacting a butadiene-based polymer and/or a drying oil with an .alpha.,.beta.-unsaturated dicarboxylic acid anhydride followed by reacting with water, a primary monoalcohol or a dialkylamine; and(B) a modified epoxy resin with acrylic acid, methacrylic acid or unsaturated fatty acid, or a modified phenol resin with glycidyl acrylate or methacrylate, components (A) and(B) being dispersed in an aqueous medium containing a base.
摘要:
The present invention relates to a backing for a water-based patch consisting of the following constituents, wherein the backing is excellent in pasty preparation retention and moisture retention, improves the persistence of drug efficacy by inhibiting the sublimation of the drug, gives neither restrained feeling nor rough feeling due to a thin thickness and an excellent elasticity, controls the moisture permeability, gives almost no sticky feeling and thereby gives an excellent feeling in application. A patch backing for a water-based pasty preparation consisting of a laminate, wherein the laminate consists of three layers, a film layer having through-holes is laminated between a nonwoven fabric layer A and a nonwoven fabric layer B, said film layer consists of a resin containing an olefin elastomer, the through-hole area per a hole is 0.02-0.18 mm2, and the opening ratio of the through-hole is 1-10%.