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AssigneeAvery Dennison Corporation
InventorsDaniel L. Holguin, H. Paul Barker, Ivan S. P. Lee, Kenneth S. Lin
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A method for the preparation of gel-free poly 2-hydroxyethyl methacrylate substantially in the absence of a chain transfer agent, comprising introducing monomeric 2-hydroxyethyl methacrylate containing ethylene glycol dimethacrylate impurities in the range of about 0.05 to 0.1% by weight into alcohol, polymerizing the 2-hydroxyethyl methacrylate to form a polymerization mixture, and removing the alcohol. Hydrophilic pressure sensitive adhesives are provided by adding polyethylene glycol to the polymerization mixture prior to removing the alcohol. A method for the preparation of an acrylic emulsion ink jet receptive clear coating, comprising forming a alkyl acrylate monomer-containing pre-emulsion feed mixture, introducing an activator into the alkyl acrylate monomer-containing pre-emulsion feed mixture, reacting a water soluble monomer feed in the alkyl acrylate monomer-containing pre-emulsion feed mixture, the water soluble monomer feed comprising 2-hydroxyethyl methacrylate and a cationic monomer to form a clear polymer in the reaction mixture. In another embodiment, the clear polymer in the butyl acrylate-containing pre-emulsion feed mixture is subsequently reacted with a water insoluble monomer feed mixture comprising 2-hydroxyethyl methacrylate, n-vinyl pyrrolidone, butyl acrylate, and methacrylic acid to form a second clear polymer in addition to the clear polymer in the alkyl acrylate monomer containing pre-emulsion feed mixture.
A method of preparing a substantially gel free, hydrophilic, water soluble polymer substantially in the absence of a chain transfer agent, said polymer comprising a copolymer of 2-hydroxyethyl methacrylate and acrylic acid or methacrylic acid including:
A method of preparing a hydrophilic pressure sensitive adhesive comprising:
A method of preparing a flexible hydrophilic coating comprising:
Dependencies are inferred from the claim text.