摘要:
The present invention provides a film-forming composition. The composition includes a reaction product of:a) a polyamine containing a primary amino group and a secondary amino group; andb) an acyclic carbonate.Also provided is a method of preparing a film-forming composition and an article coated with such compositions.
摘要:
In accordance with the present invention, an electrodepositable composition and a method of electrodeposition using the composition are provided. The electrodepositable composition comprises (a) an active hydrogen-containing, cationic salt group-containing resin electrodepositable on a cathode; (b) a capped polyisocyanate curing agent; and optionally, (c) a metal-containing catalyst. The capped polyisocyanate curing agent comprises a polyisocyanate at least partially capped with a material having the structure: ##STR1## wherein n is a number of 1 to 10; m is a number of 1 to 10 and R is hydrogen or an alkyl or aryl group or substituted alkyl or aryl group having from about 1 to about 30 carbon atoms.
摘要:
Provided is an electrodepositable coating composition of a resinous phase dispersed in an aqueous medium, the resinous phase including (a) an active hydrogen-containing, cationic salt group-containing resin; and (b) an at least partially blocked polyisocyanate curing agent. The composition contains an organotin catalyst which is or is derived from a dialkyltin compound having the structure (I): [R1][R2]—Sn═O (I) where R1 and R2 are the same or different, and each independently represents a monovalent hydrocarbon group wherein the sum of the carbon atoms in R1 and R2 is greater than 8. The catalyst is present in an amount sufficient to effect cure at a temperature at or below 340° F. (171.1° C.). Methods of preparing and using the composition also are provided.
摘要:
The present invention is directed to a method for producing bicyclic guanidines comprising heating a reaction mixture comprising cyclic urea and a dehydrating agent to a temperature ≧90° C.
摘要:
Provided is an electrodepositable coating composition of a resinous phase dispersed in an aqueous medium, the resinous phase including (a) an active hydrogen-containing, cationic salt group-containing resin; and (b) an at least partially blocked polyisocyanate curing agent. The composition contains an organotin catalyst which is or is derived from a dialkyltin compound having the structure (I): [R1][R2]—Sn═O (I) where R1 and R2 are the same or different, and each independently represents a monovalent hydrocarbon group wherein the sum of the carbon atoms in R1 and R2 is greater than 8. The catalyst is present in an amount sufficient to effect cure at a temperature at or below 340° F. (171.1° C.). Methods of preparing and using the composition also are provided.
摘要:
The present invention is directed to electrodepositable coating compositions providing improved film flexibility and humidity resistance. The compositions contain a substantially ungelled resin or reaction product formed from reacting (i) an epoxy functional polyester with (ii) an amine. The present invention also includes a method for electrocoating a conductive substrate with the described electrodepositable coating compositions. Additionally, the present invention is directed to a conductive substrate coated according to the described method.
摘要:
The present invention provides a film-forming composition. The composition includes a reaction product of: a) a polyamine containing a primary amino group and a secondary amino group; and b) an acyclic carbonate. Also provided is a method of preparing a film-forming composition and an article coated with such compositions.
摘要:
Provided is an electrodepositable coating composition of a resinous phase dispersed in an aqueous medium, the resinous phase including (a) an active hydrogen-containing, cationic salt group-containing resin; and (b) an at least partially blocked polyisocyanate curing agent. The composition contains an organotin catalyst which is or is derived from a dialkyltin compound having the structure (I): [R1][R2]—Sn═O (I) where R1 and R2 are the same or different, and each independently represents a monovalent hydrocarbon group wherein the sum of the carbon atoms in R1 and R2 is greater than 8. The catalyst is present in an amount sufficient to effect cure at a temperature at or below 340° F. (171.1° C.). Methods of preparing and using the composition also are provided.