Resin binders and process for preparing them
AssigneeHoechst Aktiengesellschaft
InventorsReinhard Wagner, Gerhard Werner, Gunther Hencken
Life of this patent
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Abstract
An unsaturated polyester suitable as a binder which comprises a reaction product of (A) an acid component comprising one or a mixture of .alpha.,.beta.-mono-olefinically unsaturated dicarboxylic acids or polycarboxylic acids free from polymerizable carbon-carbon multiple bonds or functional derivatives thereof, (B) a polyhydric alcohol, (C) a polycyclic compound containing a norbornane ring system and having one or more identical substituents selected from carboxyl, hydroxy and amino groups, and (D) an acrylic compound which is capable of condensing with at least one of components (A) to (C) and a process of their preparation.
Claims15
An unsaturated polyester which comprises a reaction product of, in a first step
- (A) at least one compound selected from the group consisting of .alpha.,.beta.-mono-olefinically unsaturated dicarboxylic acids, polycarboxylic acids free from polymerisable carbon-carbon multiple bonds and functional derivatives thereof
- (B) at least one polyhydric alcohol, and
- (C) at least one tricyclo-(5,2,1,0.sup.2,6)-decane derivative in an amount of 0.5 to 30% by weight based on the polyester resin, said tricyclo-(5,2,1,0.sup.2,6)-decane derivative being substituted by hydroxyl, carboxyl or amino groups, to thereby form an intermediate polyester having reactive hydroxy groups, and
- (D) at least one acrylic compound which is added in a separate second stage and which is reacted with the polyester intermediate products of components (A) to (C) and said acrylic compound is selected from the group consisting of acrylic acid and methacrylic acid wherein the reaction between the intermediate polyester and the acrylic compound is effected through the carboxylic group of the acrylic compound.
An unsaturated polyester which comprises a reaction product of, in a first step,
- (A) at least one polycarboxylic acid free from polymerisable carbon-carbon multiple bonds,
- (B) at least one polyhydric alcohol, and
- (C) at least one tricyclo-(5,2,1,0.sup.2,6)-decane derivative in an amount of 0.5 to 30% by weight based on the polyester resin, said tricyclo-(5,2,1,0.sup.2,6)-decane derivative being substituted by hydroxyl, carboxyl, or amino groups, to thereby form an intermediate polyester having reactive hydroxy groups,
- and
- (D) at least one acrylic compound selected from the group consisting of acrylic acid and methacrylic acid which is added in a separate stage and which is reacted with the polyester intermediate products of components (A) to (C) through the carboxylic group of the acrylic compound.
Dependencies are inferred from the claim text.