Shell Oil Comapny

Other

Charles J Stark

David J St Clair

James R Erickson

Robert Charles Bening

Pen-Chung Wang

Jimmy D Elmore

Gayle Edward Back

Kailash C Dangayach

Kalyan Ghosh

Edward John Marx

Ernest Charles Galgoci, Jr

Rita D Pietruszka

By Ann E Stark, Adminstrator

An aqueous system comprises at least one epoxy resin and a reaction product with an amine equivalent weight of at least 50 prepared by the reaction of an (A) epoxy-functional amidoamine derived from at least one epoxy resin and an amidoamine obtained via the reaction of an acid-terminated polyalkylene glycol and a diamine in an active hydrogen:epoxy groups ratio of from 1:15 to 1:350, with (B) at least one polyamine in an active amine hydrogen:epoxy groups equivalent ratio of from 2:1 to 30:1, and, optionally (C) a monoepoxide in a remaining active amine hydrogen:epoxy groups equivalent ratio of from 5:1 to 20:1.

Polyamine/epoxy-functional amidoamine product with epoxy resin

A water-dispersible curing agent for epoxy resins is prepared by the reaction of (a) an epoxy-functional compound obtained from the reaction of at least one epoxy resin and an amidoamine derived from the reaction of an acid-terminated polyalkylene glycol and a diamine in an active amine hydrogen:epoxy groups ratio of from 1:15 to 1:350, (b) at least one polyamine in an active amine hydrogen:epoxy groups ratio of from 2:1 to 30:1 which yields an amine-terminated product having an amine equivalent weight of at least 50, and, optionally, (c) a monoepoxy in a remaining active amine hydrogen:epoxy groups ratio of from 5:1 to

Epoxy-functional amidoamine reacted with excess polyamine and monoepoxy as epoxy curative

Stable aqueous emulsions of epoxy resins are provided using an epoxy-functional surfactant prepared by reacting an amidoamine having the formula:

Aqueous dispersions of epoxy resins

A curable epoxidized polyester-based composition useful for powder coatings application is provided by epoxidizing a polyester having a melting point of at least 90.degree. C. and a viscosity of at most 50 Poise@ 200.degree. C., where such polyester is a polyester prepared by reacting (I) a tetrahydrophthalic acid or anhydride, (ii) at least one cycloaliphatic polyol, (iii) at least one saturated polycarboxylic acid, and (iv) optionally at least one other alcohol under conditions effective to obtain a solid polyester having a melting point of at least 90.degree. C. Curable coating powder is obtained containing the epoxidized polyester and a solid carboxylic acid curing agent having an acid equivalent weight within the range of from about 100 to about 1500.

Epoxidized polyester-based powder coating compositions

A stable aqueous emulsions of epoxy resins are provided using an epoxy-functional polyether having the formula: ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.15 alkyl, aryl or alkylaryl group, R.sup.2 is a divalent aliphatic group, a divalent cycloaliphatic group, a divalent aryl group, or a divalent arylaliphatic group, R.sup.3 is independently a hydrogen or a C.sub.1 -C.sub.10 alkyl group, R.sup.8 is a divalent aliphatic group optionally containing ether or ester group(s) or together with R.sup.9 or R.sup.10 form a spiro ring optionally containing heteroatoms, and R.sup.9 and R.sup.10 are independently hydrogen or R.sup.9 or R.sup.10 together with R.sup.8 form a spiro ring optionally containing heteroatoms such as oxygen, r is a real number from about 0 to about 6, X and Y are independently a hydrogen, methyl or ethyl group with the provision that if X is methyl or ethyl, Y is hydrogen or if Y is methyl or ethyl, X is hydrogen and n+m is a real number from about 15 to about 450 and n is a real number in an amount effective to provide emulsifying property.

A stable aqueous emulsions of epoxy resins are provided using an epoxy-functional polyether having the formula: ##STR1## wherein Q is A or B, R.sup.1 is independently a divalent hydrocarbon group, R.sup.2 is a divalent aliphatic group optionally containing ether or ester groups or together with R.sup.3 or R.sup.4 form a spiro ring optionally containing heteroatoms, and R.sup.3 and R.sup.4 are independently hydrogen or R.sup.3 or R.sup.4 together with R.sup.2 form a spiro ring optionally containing heteroatoms such as oxygen, X and Y are independently hydrogen, methyl or ethyl group with the provision that if X is methyl or ethyl, Y is hydrogen or if Y is methyl or ethyl, X is hydrogen and n+m+o is a positive real number from about 15 to 450, and where Q is B, n+o is a real number in an amount effective to provide emulsifying property.

A process for making polymers of conjugated dienes which contain hydroxyl groups, including highly reactive primary hydroxyl groups, in the diene blocks which comprises

Hydroxyl functional derivatives of epoxidized diene polymers and process

A coating composition is provided comprising an epoxy resin, a polyacetoacetate, a curing agent for the epoxy resin, and an optional organic solvent. The presence of the polyacetoacetate permits the preparation of a fast-drying high-solids coating formulation.

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Houston, TX, United States of America

Charles J Stark