Method for making an absorbent binder composition and application thereof to a substrate

A method of making an absorbent binder composition comprising:

• forming a first aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acids, sulphonic acids, phosphoric acids, and combinations thereof, an ethylenically unsaturated monomer including an acrylate or a methacrylate that contains an alkoxysilane functionality;
• and a reducing polymerization initiator;
• forming a second aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acids, sulphonic acids, phosphoric acids, and combinations thereof;
• and an oxidizing polymerization initiator;
• combining the first aqueous monomer solution with the second aqueous monomer solution wherein the reducing polymerization initiator reacts with the oxidizing polymerization initiator to form a binder composition;
• and
• inducing crosslinking of the binder composition by removal of water.

A method for making an absorbent binder composition comprising:

• forming a first aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acids, sulphonic acids, phosphoric acids, and combinations thereof;
• and an ethylenically unsaturated monomer including an acrylate or a methacrylate that contains an alkoxysilane functionality;
• adding an amount of a basic material to the first aqueous monomer solution effective to neutralize the monoethylenically unsaturated monomer;
• adjusting the first aqueous monomer solution to have a pH of about 6.5 to about 7.0;
• adding a reducing polymerization initiator including ascorbic acid to the first aqueous monomer solution;
• forming a second aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acids, sulphonic acids, phosphoric acids, and combinations thereof;
• adding an amount of a basic material to the second aqueous monomer solution effective to neutralize the monoethylenically unsaturated monomer;
• adjusting the second aqueous monomer solution to have a pH of about 6.5 to about 7.0;
• adding an oxidizing polymerization initiator including hydrogen peroxide to the second aqueous monomer solution;
• combining the first aqueous monomer solution with the second aqueous monomer solution wherein the reducing polymerization initiator reacts with the oxidizing polymerization initiator to form a binder composition in about 60 minute or less;
• applying the binder composition to a substrate;
• and
• inducing crosslinking of the binder composition by removal of water.