(Meth)acrylates of oxyalkylated phenolic resins and their use as adhesion promoters
First Claim
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1. An (meth)acrylate-functional composition comprising an (meth)acrylate ester of an oxyalkylated, aralkylated multi-ring phenolic polyol prepared by the process of:
- a) selecting a multi-ring aralkylated phenolic starter having minimally two phenolic hydroxyl groups and at least three aryl ring systems which are not condensed with each other;
b) oxyalkylating said aralkylated phenolic starter with from 0.5 to 10 mol of oxyalkylating agent per equivalent of phenolic hydroxyl groups to produce an oxyalkylated aralkylated phenolic intermediate;
c) esterifying said oxyalkylated aralkylated phenolic intermediate with an alkacrylic acid or esterifyable derivative thereof to produce said (meth)acrylate ester of said oxyalkylated alkarylated multi-ring phenolic polyol, wherein said step of esterifying is conducted with sufficient alkacrylic acid or esterifyable derivative thereof such that 70 mol percent or more of total hydroxyl groups are esterified.
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Abstract
(Meth)acrylate esters of oxyalkylated aralkylated, multi-ring phenolic hydroxyl-containing compounds may be prepared with relatively low viscosity, and are effective as coating composition additives, in particular as adhesion promoters.
33 Citations
20 Claims
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1. An (meth)acrylate-functional composition comprising an (meth)acrylate ester of an oxyalkylated, aralkylated multi-ring phenolic polyol prepared by the process of:
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a) selecting a multi-ring aralkylated phenolic starter having minimally two phenolic hydroxyl groups and at least three aryl ring systems which are not condensed with each other;
b) oxyalkylating said aralkylated phenolic starter with from 0.5 to 10 mol of oxyalkylating agent per equivalent of phenolic hydroxyl groups to produce an oxyalkylated aralkylated phenolic intermediate;
c) esterifying said oxyalkylated aralkylated phenolic intermediate with an alkacrylic acid or esterifyable derivative thereof to produce said (meth)acrylate ester of said oxyalkylated alkarylated multi-ring phenolic polyol, wherein said step of esterifying is conducted with sufficient alkacrylic acid or esterifyable derivative thereof such that 70 mol percent or more of total hydroxyl groups are esterified. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20)
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11. A low viscosity acrylate-functional compound,
said compound comprising an acrylate ester of an oxyalkylated multi-ring aralkylated phenol having at least three non-condensed aromatic rings, at least one of said non-condensed aromatic rings comprising a phenolic hydroxyl-group free aryl group linked to a phenolic hydroxyl-group-containing aryl group through an alkylene bridge, said alkylene bridge optionally interrupted by one or more of an aryl group, O, and N; -
said multiring aralkylated phenol having, prior to oxyalkylation to form said oxyalkylated multi-ring aralkylated phenol, from 2 to 10 phenolic hydroxyl groups;
said oxyakylation sufficient to provide, on average, from 2 to 25 mol of oxyalkylene groups per mol of phenolic hydroxyl groups;
said oxyalkylated multi-ring aralkylated phenol having less than 20 mol percent free phenolic hydroxyl groups based on the total mol of phenolic groups initially present in said multi-ring aralkylated phenol; and
said acrylate-functional compound being a liquid with a neat viscosity less than 3000 cps at 25°
C. - View Dependent Claims (12, 13)
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Specification