Avery Dennison Corporation

H Paul Barker

Daniel L Holguin

Ghanshyam H Popat

Shiaonung J Su

Kenneth S Lin

Robert Valadez

Raymond G Kubit

Fred N Miekka

Frederick N Miekka

Gustav Allen Ray

Ivan S P Lee

Eng Pi Chang

A method for making hydrophilic homopolymers and copolymers of poly 2-hydroxyethyl methacrylate. Also disclosed are coatings, films, hydrogels, cosmetic compositions, dermatological compositions, pressure sensitive adhesives containing the hydrophilic homopolymers or copolymers of poly 2-hydroxyethylmethacrylate. Further disclosed are methods of coating substrates with the hydrophilic homopolymers and copolymers of poly 2-hydroxyethyl methacrylate and hydrophilic pressure sensitive adhesives.

Polymer powders, pressure sensitive adhesives and methods of making the same

An image transfer assembly ( ) receives an image printed from an ink jet printer. The assembly ( ) provides a device to transfer the printed image onto an image-receiving surface. The assembly ( ) has a flexible substrate ( ) on one side, and an upper surface ( ) on the other side that is substantially permeable to ink jet printer ink and that is non-tacky prior to printing. The assembly ( ) has an adhesive or polymer layer ( ) in between the upper surface ( ) and the flexible substrate ( ). After printing with a water-based ink jet printer ink, the user may apply the assembly ( ) to a substrate, such as a window or other surface, and remove the flexible substrate ( ), thereby leaving the layer ( ) that bears the image on the substrate. In one of several alternative embodiments, the layer ( ) is divided into discrete zones that are separated from one another along boundaries.

Water-activated polymers and adhesive image transfer technique

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.

Hydrophilic polymers, pressure sensitive adhesives and coatings

A transparent and low refractive index optical coating for use in light transmitting electronic devices is disclosed. The optical coating comprises a hydrogel having a refractive index of less than 1.40.

Optical coating having low refractive index

Water dispersible, hydrophilic, repulpable, water-activatable, acrylic polymers are provided. The polymers are non-tacky when dry, but become tacky when wet, and exhibit high peel strength on a variety of substrates. The polymers comprise an acrylic-based polymer prepared by emulsion polymerization of 40 to 70% by weight of one or more alkyl acrylates, the alkyl group of which has from 4 to 8 carbon atoms; 10 to 20% by weight of methacrylate; 2 to 15% by weight of vinyl acetate; and 10 to 25 percent by weight of methacrylic acid and/or acrylic acid; and a positive amount up to about 30% by weight of methyl methacrylate. Some embodiments also include a short chain hydroxyalkyl methacrylate. Also provided are ink jet-imprintable, water-activatable constructions comprising a layer of water-activatable polymer, coated on a release liner or other surface. Optionally, a water-resistant transparent film layer is disposed between the polymer and release liner or used in place of the release liner. The constructions are suitable for use in ink jet printers and can be used to transfer an image to a substrate.

Growing community of inventors

Sherman Oaks, CA, United States of America

H Paul Barker