Provided are curable precursor compositions for pressure-sensitive adhesives and related articles, assemblies and methods. The provided compositions contain an alkyl (meth)acrylate, a hollow non-porous particulate filler, and a surface-modifying agent comprising a hydrophobic alkoxy silane or hydrophobic organofunctional polysiloxane. These compositions and methods enable in situ functionalization of the filler particles during or after the time they are combined with the curable resin components, thereby allowing pressure-sensitive adhesive materials to be made faster and more efficiently than when using conventional manufacturing methods.

A water-based primer composition including (a) a water-based primer component; and (b) a dye component wherein the dye is adapted for providing a visual indication of dryness during the drying process of the water-based primer composition; and wherein the dye undergoes a visual color change when subjected to a drying temperature for visually determining the dryness of a primer film formed from the water-based primer composition.

The present invention provides a polyester resin having a self-emulsifying function which is able to form an aqueous emulsion without using any emulsifier and organic solvent. The present invention also provides a water dispersion, an aqueous adhesive, an aqueous ink, a laminate and a packaging material containing the above polyester resin, as well as a method for preparing the water dispersion.

An adhesive tape includes a substrate [I] and an adhesive agent layer of a polyester adhesive agent provided on at least one of opposite surfaces of the substrate [I]. The substrate [I] is one selected from a polyolefin resin foam substrate, a urethane resin foam substrate, and an acrylic resin foam substrate. The polyester adhesive agent is made from a polyester adhesive agent composition [II] which contains a polyester resin (A) having a weight average molecular weight of 5,000 to 300,000, and having a structural unit derived from a polyol and a structural unit derived from a polyvalent carboxylic acid compound containing an aromatic structure-containing compound in a proportion of not greater than 80 mol %. The adhesive tape is excellent in adherence between a polyester adhesive agent layer and a polyolefin resin foam substrate, a urethane resin foam substrate, or an acrylic resin foam substrate.

The present invention relates to an adhesive composition containing at least a polymer and an ionic liquid, in which when an adhesive layer is formed of a composition composed of components other than the ionic liquid among components contained in the adhesive composition, the adhesive layer has a relative permittivity of 5 or more at a frequency of 100 Hz, after being left to stand in an environment of 22° C. and 20% RH for 3 days.

Provided is an adhesive composition including ornithine, citric acid, and water, wherein the ornithine and the citric acid are present in the form of an aqueous salt solution and do not form precipitates in the aqueous solution. Also provided a method of preparing an adhesive composition including: mixing ornithine, citric acid, and water to form a mixture of the ornithine, the citric acid, and the water; and stirring the mixture at a temperature of less than 80° C., wherein respective contents of the ornithine, the citric acid, and the water are adjusted such that precipitates of the ornithine and the citric acid do not form in the adhesive composition.

A repulpable pressure-sensitive adhesive useful on polar and apolar papers and storage-stable comprises a polymer whose parent monomer composition comprises: a) 10 to 30 wt % of at least one compound of the formula (I)

CH.sub.2═CH—C(O)NR.sup.1R.sup.2  (I), wherein R.sup.1 is an unsubstituted alkyl group, a hydroxyalkyl group or an acetonyl radical and R.sup.2 is a hydrogen atom, an unsubstituted alkyl group, a hydroxyalkyl group, an acetonyl radical or an aminoalkyl group; b) 60 to 80 wt % of at least one compound of the formula (II)

CH.sub.2═CH—C(O)O—(CH.sub.2).sub.2—O—R.sup.3  (II), wherein R.sup.3 is an unsubstituted alkyl group, an alkoxyalkyl group or a (polyalkoxy)alkyl group; and c) 0.5 to 10 wt % of at least one monomer selected from the group consisting of acrylic acid, methacrylic acid and (C.sub.2-C.sub.4 hydroxyalkyl) acrylates.

Also disclosed is an adhesive tape comprising the pressure-sensitive adhesive, and use of the pressure-sensitive adhesive and/or the adhesive tape for producing water-soluble bonds.

The present disclosure relates to a fluororesin substrate laminate for a high-frequency circuit, the fluororesin substrate laminate including a fluororesin substrate and an adhesive layer provided on the fluororesin substrate, wherein the adhesive layer includes a resin composition containing: (A) a maleimide compound having a saturated or unsaturated divalent hydrocarbon group; and (B) an aromatic maleimide compound.

Presently described are polylactic acid polymer based films comprising a structured surface and articles. In one embodiment, the film comprises a semicrystalline polylactic acid polymer; a second polymer such as polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; and plasticizer. Articles are also described such as a tape or sheet, comprising the structured PLA-based film and a layer of (e.g. pressure sensitive) adhesive disposed on the film. In some embodiments, the tape or sheet further comprises a low adhesion backsize or a release liner. The article can be suitable for various end-uses. In one embodiment, the tape is a paint masking tape. In another embodiment, the tape is a floor marking tape.

The invention is an epoxy resin system useful as an adhesive for high temperature applications. The system is a combination of a diglycidyl ether a bisphenol epoxy resin(s), at amounts of 30-70% by weight, with 1-10% by weight of an epoxy novolac resin 10-30% by weight of a polyurethane toughener which preferably has the terminal isocyanate functional group blocked, 1-8% by weight of a hardener, 0.1-% by weight of a cure accelerator, preferably a latent urea cure accelerator, provides the desired balance of mechanical strength and elastic modulus. The epoxy novolac resin is characterized by at least one of the following features: (i) having a viscosity at 25 degrees C. of less than 3000 mPa-s according to ASTM D-445, (ii) an average number of epoxide groups per molecule of more than 2 but less than 3.7, and (iii) a molecular weight of less than 750 g/mol.