摘要:
The invention relates to a prepasted wallcovering and a prepaste composition, and a process for making a prepasted wallcovering. A prepasted wallcovering comprises a substrate carrying a dry prepaste coating that comprises adhesive polymer and a coating modifier that has a softening point of at least 80°C, that is substantially free of hydrophobic groups and that is present as a film that inhibits moisture pick-up by the coating.
摘要:
A liquid polymeric composition comprises a suspension in an organic liquid of particulate water insoluble but water swellable polymer, the particles being less than 10 microns in size. To reduce viscosity in water the swellable polymer may be a copolymer and/or a water soluble polymer may be included. A composition of polymer particles that are swellabie and contain both soluble and insoluble polymer can be made by inverse emulsion polymerisation. An aqueous adhesive, that may be made by mixing this composition with water, comprises water swollen particulate polymer that may be a copolymer and that may be used with a dissolved polymer in order to reduce the viscosity. Pregummed substrates, such as wallpaper, that can be rendered adhesive by contacting with water are obtained by applying the aqueous or non-aqueous composition to the substrate and drying it on the substrate. Wallcovering can be stuck to a surface using the aqueous adhesive.
摘要:
Acrylic polymers comprising a non-primary hydroxyl functional monomer and low Tg alkyl acrylate monomers are useful in adhesive compositions that find use in skin contact applications.
摘要:
This disclosure relates generally to adhesive articles and particularly to adhesive articles comprising a reversible adhesive layer and a non-reversible adhesive layer. The adhesive article may further comprise a backing material. The adhesive article may further comprise a dressing material. Such adhesive articles may be particularly suitable for treatment of damaged sensitive tissue, for example wounds formed on a fragile skin.
摘要:
A pressure sensitive adhesive composition is described that comprises a (meth)acrylic polymer comprising polymerized units of (meth)acrylic ester monomer having a Tg less than 0C and ethylenically unsaturated monomer comprising a pendent functional group crosslinked with an amine or carboxylic acid group of at least one amino acid. Also described are aqueous pressure sensitive adhesive compositions, adhesive-coated articles, and methods.
摘要:
Disclosed are removable pressure sensitive adhesive compositions (PSAs) useful with facestocks and/or packaging labels designed to be removed in the recycling of polymeric packaging. The PSAs of the invention include (a) at least one monomer which may undergo free radical polymerization and whose homopolymer has a glass transition temperature of less than or equal to 10° C., (b) at least one mono-olefinically unsaturated monomer having aldehyde or ketone functionality, and (c) an effective amount of at least one polyhydrazide crosslinker having hydrazine functionality. The PSA composition of the invention exhibits a peel adhesion value of between about 0.4 lbs/in (70 N/m) and about 4 lbs/in (700 N/m), and the percent film remaining on the polymeric packaging after a sink-float testing is 0% to about 8%.