Aqueous primer or coating
AssigneeLord Corporation
InventorsHelmut W. Kucera, Rebecca S. Cowles
Life of this patent
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Abstract
A primer or coating composition that includes (A) an aqueous dispersion of a phenolic resin that includes water and a reaction product of a phenolic resin precursor, a modifying agent and, optionally, a multi-hydroxy phenolic compound wherein the modifying agent includes at least one functional moiety that enables the modifying agent to react with the phenolic resin precursor and at least one ionic moiety, and (B) a flexibilizer. According to one embodiment the modifying agent is an aromatic compound. According to another embodiment the ionic moiety of the modifying agent is sulfate, sulfonate, sulfinate, sulfenate or oxysulfonate and the dispersed phenolic resin reaction product has a carbon/sulfur atom ratio of 20:1 to 200:1.
Claims57
An aqueous composition comprising the following ingredients:
- (A) an aqueous dispersion of a phenolic resin that includes a reaction product of:
- (i) a phenolic resin precursor;
- and
- (ii) a modifying agent wherein the modifying agent includes
- (a) at least one functional moiety that enables the modifying agent to react with the phenolic resin precursor;
- and
- (b) at least one ionic moiety;
- and
- (B) a flexibilizer.
An aqueous composition formed by combining:
- (A) an aqueous dispersion of a phenolic resin that includes a reaction product of:
- (i) a phenolic resin precursor;
- and
- (ii) a modifying agent wherein the modifying agent includes
- (a) at least one functional moiety that enables the modifying agent to react with the phenolic resin precursor;
- and
- (b) at least one ionic moiety;
- and
- (B) a flexibilizer.
A method for providing a protective coating on a metallic substrate comprising applying an aqueous coating composition onto the metallic substrate wherein the composition comprises the following ingredients:
- (A) an aqueous dispersion of a phenolic resin that includes a reaction product of:
- (i) a phenolic resin precursor;
- and
- (ii) a modifying agent wherein the modifying agent includes
- (a) at least one functional moiety that enables the modifying agent to react with the phenolic resin precursor;
- and
- (b) at least one ionic moiety;
- and
- (B) a flexibilizer.
A method for providing a protective coating on a metallic substrate comprising applying an aqueous coating composition formed by combining:
- (A) an aqueous dispersion of a phenolic resin that includes a reaction product of:
- (i) a phenolic resin precursor;
- and
- (ii) a modifying agent wherein the modifying agent includes
- (a) at least one functional moiety that enables the modifying agent to react with the phenolic resin precursor, and
- (b) at least one ionic moiety;
- and
- (B) a flexibilizer.
A method for bonding an elastomeric substrate surface to a metallic substrate surface comprising autodepositing an aqueous coating or primer composition onto the metallic substrate, wherein the aqueous coating composition comprises the following ingredients:
- (A) an aqueous dispersion of a phenolic resin that includes a reaction product of:
- (i) a phenolic resin precursor;
- and
- (ii) a modifying agent wherein the modifying agent includes
- (a) at least one functional moiety that enables the modifying agent to react with the phenolic resin precursor;
- and
- (b) at least one ionic mroiety;
- and
- (B) a flexidilizer, and then applying an adhesive covercoat to effect bonding of the metallic substrate to the elastomeric substrate.
Dependencies are inferred from the claim text.