A curable resin composition for forming an adhesive layer on at least one surface of a substrate (C), the curable resin composition comprising: a compound (A) represented by formula (1):

##STR00001##

wherein X represents a functional group containing a reactive group, and R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an optionally substituted, aliphatic hydrocarbon, aryl, or heterocyclic group; and an adhesion aid compound (B), the curable resin composition satisfying formula (X): −10≦HSP (A)−HSP (B)≦10 and formula (Y): −10≦HSP (C)−HSP (B)≦10, wherein HSP (A) is an HSP value of the compound (A), HSP (B) is an HSP value of the adhesion aid compound (B), and HSP (C) is an HSP value of the substrate (C).

A curable resin composition for forming an adhesive layer on at least one surface of a substrate (C), the curable resin composition comprising: a compound (A) represented by formula (1):

##STR00001##

wherein X represents a functional group containing a reactive group, and R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an optionally substituted, aliphatic hydrocarbon, aryl, or heterocyclic group; and an adhesion aid compound (B), the curable resin composition satisfying formula (X): −10≦HSP (A)−HSP (B)≦10 and formula (Y): −10≦HSP (C)−HSP (B)≦10, wherein HSP (A) is an HSP value of the compound (A), HSP (B) is an HSP value of the adhesion aid compound (B), and HSP (C) is an HSP value of the substrate (C).

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%.

The present invention provides switchable adhesives comprising a mixture, in proportions by weight, of 20% to 98% of an adhesive, 2% to 80% of curable molecules and 0.05% to 10% of photoinitiator in which the weight proportion of the adhesive is calculated on the basis of its dry weight and wherein the adhesive includes an internal cross-linker for cross-linking the adhesive during drying to provide a cohesive strength of between 5 and 100 N/12.7×12.7 mm measured according to FINAT test method No. 18. Preferably, the adhesive and curable molecules are mutually soluble when dry, or the curable molecules and adhesive may be uniformly dispersed in each other. Preferably the amount of adhesive in the mixture is in the range 40% to 98% by weight, more preferably 60% to 95% by weight, even more preferably 70% to 85% by weight. Preferably the proportion of curable molecules in the mixture ranges from 2% to 60% by weight, more preferably 5% to 40% by weight, even more preferably 15% to 30% by weight. Preferably, the photoinitiator is present in the mixture in the proportions 0.5% to 5% by weight, more preferably 1% to 3% by weight. Such switchable adhesives are useful in medical dressings and other removable sheet products, and may be simply prepared by stirring the adhesive, the curable molecules and the photoinitiator together at room temperature.

The invention discloses an adhesion agent composition comprising at least one C.sub.3-C.sub.200 olefin compound having at least one metathesis active double bond, wherein the olefin is substituted or unsubstituted; and at least one compatibilizing functionality for interacting with a substrate surface. The substrate surface can be any surface, for example, silicate glasses, silicate minerals, metals, metal alloys, ceramics, natural stones, plastics, carbon, silicon, and semiconductors. The invention also discloses articles of manufacture utilizing these adhesion agents as well as methods for adhering a polyolefin to a substrate surface.

The invention discloses an adhesion agent composition comprising at least one C.sub.3-C.sub.200 olefin compound having at least one metathesis active double bond, wherein the olefin is substituted or unsubstituted; and at least one compatibilizing functionality for interacting with a substrate surface. The substrate surface can be any surface, for example, silicate glasses, silicate minerals, metals, metal alloys, ceramics, natural stones, plastics, carbon, silicon, and semiconductors. The invention also discloses articles of manufacture utilizing these adhesion agents as well as methods for adhering a polyolefin to a substrate surface.

The invention discloses an adhesion agent composition comprising at least one C.sub.3-C.sub.200 olefin compound having at least one metathesis active double bond, wherein the olefin is substituted or unsubstituted; and at least one compatibilizing functionality for interacting with a substrate surface. The substrate surface can be any surface, for example, silicate glasses, silicate minerals, metals, metal alloys, ceramics, natural stones, plastics, carbon, silicon, and semiconductors. The invention also discloses articles of manufacture utilizing these adhesion agents as well as methods for adhering a polyolefin to a substrate surface.

An adhesive film for a polarizing plate includes a functional group represented by Formula 1: ##STR00001##
wherein * represents a binding site; A is a C.sub.1 to C.sub.20 aliphatic hydrocarbon group; B is —O—, —S—, a C.sub.1 to C.sub.20 aliphatic hydrocarbon group, or a single bond; R.sub.2 is a C.sub.1 to C.sub.20 aliphatic hydrocarbon group; and n is an integer from 1 to 5.

An adhesive film for a polarizing plate includes a functional group represented by Formula 1: ##STR00001##
wherein * represents a binding site; A is a C.sub.1 to C.sub.20 aliphatic hydrocarbon group; B is —O—, —S—, a C.sub.1 to C.sub.20 aliphatic hydrocarbon group, or a single bond; R.sub.2 is a C.sub.1 to C.sub.20 aliphatic hydrocarbon group; and n is an integer from 1 to 5.

A method of making an adhesive is provided, including obtaining an actinic radiation-polymerizable adhesive precursor composition disposed against a surface of an actinic radiation-transparent substrate and irradiating a first portion of the actinic radiation-polymerizable adhesive precursor composition through the actinic radiation-transparent substrate for a first irradiation dosage. The method further includes irradiating a second portion of the actinic radiation-polymerizable adhesive precursor composition through the actinic radiation-transparent substrate for a second irradiation dosage. The first portion and the second portion are adjacent to or overlapping with each other and the first irradiation dosage and the second irradiation dosage are not the same. The method forms an integral adhesive having a variable thickness in an axis normal to the surface of the actinic radiation-transparent substrate. Also, an adhesive article is provided, including a substrate having a major surface and an integral adhesive disposed on the major surface of the substrate.