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US 2003/0125493 A1Published application
(Meth)acrylates of oxyalkylated phenolic resins and their use as adhesion promoters
OwnerStephen H. Harris, Carmen L. Rodriguezinventors
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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.
Claims20
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.
1 more element
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.
4 more elements
Dependencies are inferred from the claim text.