摘要:
An anhydride-functional polymer is obtained by reacting under ene reaction conditions:(i) an unsaturated anhydride having the structure: ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen; and(ii) at least one polyolefin having at least two carbon-carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon-carbon double bonds.
摘要:
An anhydride-functional polymer obtained by reacting under graft copolymerization reaction conditions,(A) an unsaturated polymer which was obtained by reacting under ene reaction conditions a mixture of reactants comprising:(i) an unsaturated anhydride having the structure: ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen; and(ii) at least one polyolefin having at least two carbon-carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon-carbon double bonds; and(B) at least one ethylenically unsaturated monomer which is copolymerizable with the unsaturated polymer.
摘要:
An anhydride-functional polymer obtained by reacting under graft copolymerization reaction conditions,(A) an unsaturated polymer which was obtained by reacting under ene reaction conditions a mixture of reactants comprising:(i) an unsaturated anhydride having the structure: ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen; and(ii) at least one polyolefin having at least two carbon-carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon-carbon double bonds; and(B) at least one ethylenically unsaturated monomer which is copolymerizable with the unsaturated polymer.
摘要:
An anhydride-functional polymer is obtained by reacting under ene reaction conditions:(i) an unsaturated anhydride having the structure: ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen; and(ii) at least one polyolefin having at least two carbon-carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon-carbon double bonds.
摘要:
An anhydride-functional polymer is obtained by at least partially hydrogenating an unsaturated polymer which was obtained by reacting under ene reaction conditions: (i) an unsaturated anhydride having the structure: ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen; and (ii) at least one polyolefin having at least two carbon--carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon--carbon double bonds.
摘要:
Coating compositions which comprise: (i) a hydroxy-functional compound containing in the molecule an average of at least two hydroxyl groups; (ii) an anhydride-functional compound containing in the molecule an average of at least two cyclic carboxylic acid anhydride groups; and (iii) an epoxy-functional compound containing in the molecule an average of at least two cycloaliphatic epoxy groups, provide low temperature cure response and excellent durability.
摘要:
A substrate coated with a basecoat of a pigmented film-forming polymer and a clearcoat applied to the basecoat of a film-forming polymer wherein the clearcoat and/or the basecoat is a curable composition comprising(i) an acid-functional compound having an average of at least two carboxylic acid groups per molecule; and(ii) an anhydride-functional compound having an average of at least two cyclic carboxylic acid anhydride groups per molecule; and(iii) an epoxy-functional compound having an average of at least one epoxy group per molecule; and(iv) a hydroxy-functional compound having an average of at least two hydroxyl groups per molecule;wherein at least one of the compounds (i), (ii), (iii) or (iv) comprises a film forming polymer.
摘要:
An acid-functional polymer is obtained by the hydrolysis or half-ester ring opening reaction of an anhydride-functional polymer obtained by at least partially hydrogenating an unsaturated polymer which was obtained by reacting under ene reaction conditions:(i) an unsaturated anhydride having the structure: ##STR1## wherein R.sub.1 and R.sub.2 are each independently hydrogen, alkyl of 1 to about 6 carbons, or alkoxy of 1 to about 6 carbons, or a halogen; and(ii) at least one polyolefin having at least two carbon-carbon double bonds in the polyolefin backbone and having an average of at least three carbon atoms in the polyolefin backbone between the carbon-carbon double bonds.
摘要:
A substrate coated with a multi-layer decorative and/or protective coating which comprises:(a) a basecoat comprising a pigmented film-forming polymer; and(b) a transparent clearcoat comprising a film-forming polymer applied to the surface of the basecoat composition;the improvement which comprises utilizing as the clearcoat a multicomponent curable composition which is reactive upon mixing of the components, wherein the curable composition comprises:(i) an anhydride-functional compound having an average of at least two cyclic carboxylic acid anhydride groups per molecule; and(ii) a hydroxy-functional compound havng an average of at least two hydroxyl groups per molecule;wherein at least one of the compounds (i) or (ii) comprises a film forming polymer.
摘要:
Novel carboxylic acid-functional polymers are obtained by reacting:(a) a hydroxy-functional polymer having an average of at least two hydroxyl groups per molecule; and(b) a cyclic anhydride under reaction conditions to produce acid groups and ester groups; andwherein the hydroxy-functional polymer is obtained by the copolymerization of:(i) 1-95 weight percent of a cellulose ester; and(ii) 5-99 weight percent of at least one ethylenically unsaturated alcohol copolymerizable with the cellulose acetate butyrate; and(iii) 0-94 weight percent of at least one other ethylenically unsaturated monomer copolymerizable with the cellulose ester and the ethylenically unsaturated alcohol.Curable compositions especially useful as coatings are prepared by mixing the novel carboxylic acid-functional polymers with epoxy-functional compounds and, optionally, with anhydride-functional compounds and, optionally, hydroxy-functional compounds. The coatings are especially useful in clearcoat/basecoat compositions.