摘要:
There is provided a tackifier composition especially suited for use with natural rubber latex and formed from an olefin resin, preferably a polymerized terpene hydrocarbon resin condensed with an unsaturated carboxylic acid or anhydride, optionally partially esterified with a C.sub.1 -C.sub.30 alcohol or phenol, and neutralized with a base, preferably a volatile base such as an amine, and then dispersed in an aqueous medium. The tackifier when added to a latex forms compositions useful particularly as pressure sensitive adhesives.
摘要:
A process for making polymers of conjugated dienes which contain hydroxyl groups, including highly reactive primary hydroxyl groups, in the diene blocks which comprises(a) making a precursor polymer by polymerizing at least one conjugated diene which leaves 1,2 disubstituted, 1,1 disubstituted, 1,1,2 trisubstituted or tetrasubstituted olefinic unsaturation in the polymer,(b) optionally partially hydrogenating said precursor polymer,(c) epoxidizing said precursor polymer such that epoxy groups form at said substituted sites and the amount of epoxy functionality in the polymer is from at least 0.1 Meq/g polymer, and(d) reacting the epoxidized polymer with an alcohol having one unprotected hydroxyl group in a solvent in the presence of a Lewis acid selected from the group consisting of MX.sub.n where M is selected from the group consisting of boron, aluminum, iron and tin, and X is a halogen, and organic complexes of such acids.A diene polymer containing 0.01 to 15 Meq/g polymer of hydroxyl group, preferably including highly reactive primary hydroxyl groups, and comprised of ether-alcohol units of the formula ##STR1## where R is selected from the group consisting of alkyl radicals containing up to 10 carbon atoms, monohydric and dihydric alcohol groups and carbonate groups; and R.sub.1 and R.sub.2 are hydrogen or alkyl radicals wherein in (G) only one of R.sub.1 or R.sub.2 is hydrogen.
摘要:
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.
摘要:
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.
摘要:
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 20:1.
摘要:
A mixture of tetrachloroacetone and hydrogen peroxide has been found effective for epoxidizing olefinically unsaturated organic material dissolved in various aromatic or halogenated aliphatic organic solvents.
摘要:
A process for making polymers of conjugated dienes which contain hydroxyl groups, including highly reactive primary hydroxyl groups, in the diene blocks which comprises(a) making a precursor polymer by polymerizing at least one conjugated diene which leaves 1,2 disubstituted, 1,1 disubstituted, 1,1,2 trisubstituted or tetrasubstituted olefinic unsaturation in the polymer,(b) optionally partially hydrogenating said precursor polymer,(c) epoxidizing said precursor polymer such that epoxy groups form at said substituted sites and the amount of epoxy functionality in the polymer is from at least 0.1 Meq/g polymer, and(d) reacting the epoxidized polymer with an alcohol having one unprotected hydroxyl group in a solvent in the presence of a Lewis acid selected from the group consisting of MX.sub.n where M is selected from the group consisting of boron, aluminum, iron and tin, and X is a halogen, and organic complexes of such acids.A diene polymer containing 0.01 to 15 Meq/g polymer of hydroxyl group, preferably including highly reactive primary hydroxyl groups, and comprised of ether-alcohol units of the formula ##STR1## where R is selected from the group consisting of alkyl radicals containing up to 10 carbon atoms, monohydric and dihydric alcohol groups and carbonate groups; and R.sub.1 and R.sub.2 are hydrogen or alkyl radicals wherein in (G) only one of R.sub.1 or R.sub.2 is hydrogen.
摘要:
A process for making polymers of conjugated dienes which contain hydroxyl groups, including highly reactive primary hydroxyl groups, in the diene blocks which comprises(a) making a precursor polymer by polymerizing at least one conjugated diene which leaves 1,2 disubstituted, 1,1 disubstituted, 1,1,2 trisubstituted or tetrasubstituted olefinic unsaturation in the polymer,(b) optionally partially hydrogenating said precursor polymer,(c) epoxidizing said precursor polymer such that epoxy groups form at said substituted sites and the amount of epoxy functionality in the polymer is from at least 0.1 Meq/g polymer, and(d) reacting the epoxidized polymer with an alcohol having one unprotected hydroxyl group in a solvent in the presence of a Lewis acid selected from the group consisting of MX.sub.n where M is selected from the group consisting of boron, aluminum, iron and tin, and X is a halogen, and organic complexes of such acids.A diene polymer containing 0.01 to 15 Meq/g polymer of hydroxyl group, preferably including highly reactive primary hydroxyl groups, and comprised of ether-alcohol units of the formula ##STR1## where R is selected from the group consisting of alkyl radicals containing up to 10 carbon atoms, monohydric and dihydric alcohol groups and carbonate groups; and R.sub.1 and R.sub.2 are hydrogen or alkyl radicals wherein in (G) only one of R.sub.1 or R.sub.2 is hydrogen.
摘要:
A process for making polymers of conjugated dienes which contain hydroxyl groups, including highly reactive primary hydroxyl groups, in the diene blocks which comprises(a) making a precursor polymer by polymerizing at least one conjugated diene which leaves 1,2 disubstituted, 1,1 disubstituted, 1,1,2 trisubstituted or tetrasubstituted olefinic unsaturation in the polymer,(b) optionally partially hydrogenating said precursor polymer,(c) epoxidizing said precursor polymer such that epoxy groups form at said substituted sites and the amount of epoxy functionality in the polymer is from at least 0.1 Meq/g polymer, and(d) reacting the epoxidized polymer with an alcohol having one unprotected hydroxyl group in a solvent in the presence of a Lewis acid selected from the group consisting of MX.sub.n where M is selected from the group consisting of boron, aluminum, iron and tin, and X is a halogen, and organic complexes of such acids.A diene polymer containing 0.01 to 15 Meq/g polymer of hydroxyl group, preferably including highly reactive primary hydroxyl groups, and comprised of ether-alcohol units of the formula ##STR1## where R is selected from the group consisting of alkyl radicals containing up to 10 carbon atoms, monohydric and dihydric alcohol groups and carbonate groups; and R.sub.1 and R.sub.2 are hydrogen or alkyl radicals wherein in (G) only one of R.sub.1 or R.sub.2 is hydrogen.
摘要:
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.