Pressure-sensitive adhesive compositions that contain polymer microspheres with an average particle size of 20 μm to 100 μm, the polymer microspheres synthesized using the disclosed suspension polymerization techniques and include at least three structural isomers of a secondary (meth)acrylate of Formula (I), where R.sup.1 and R.sup.2 are each independently H or a C.sub.1 to C.sub.10 saturated linear alkyl group, the sum of the number of carbons in R.sup.1 and R.sup.2 is 7 to 18, inclusive, and R.sup.3 is H or CH.sub.3. The disclosed pressure-sensitive adhesive compositions may be used in masking articles to provide holding power to, clean paint-lines on, low surface energy adhesion to, and excellent damage-free removal from painted surfaces.

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Pressure-sensitive adhesive compositions that contain polymer microspheres with an average particle size of 20 μm to 100 μm, the polymer microspheres synthesized using the disclosed suspension polymerization techniques and include at least three structural isomers of a secondary (meth)acrylate of Formula (I), where R.sup.1 and R.sup.2 are each independently H or a C.sub.1 to C.sub.10 saturated linear alkyl group, the sum of the number of carbons in R.sup.1 and R.sup.2 is 7 to 18, inclusive, and R.sup.3 is H or CH.sub.3. The disclosed pressure-sensitive adhesive compositions may be used in masking articles to provide holding power to, clean paint-lines on, low surface energy adhesion to, and excellent damage-free removal from painted surfaces.

##STR00001##

Fiber-containing composites are described that include woven or non-woven fibers, and a binder that holds the fibers together. The binder may include the reaction product of a starch and a polycarboxylic acid. The starch has a weight average molecular weight that ranges from 1×10.sup.6 Daltons to 1×10.sup.7 Daltons. The fiber-containing composite has an unaged tensile strength of greater than 4.0 and an aged tensile strength greater than 3.0. Also described are methods of making the fiber-containing composites. The methods may include applying a binder composition to fibers to form coated fibers, measuring a moisture content of the coated fibers, and curing the coated fibers in a curing oven to form the fiber-containing composite. The binder composition may include a starch having a weight average molecular weight that ranges from 1×10.sup.6 Daltons to 1×10.sup.7 Daltons, and a polycarboxylic acid.

Fiber-containing composites are described that include woven or non-woven fibers, and a binder that holds the fibers together. The binder may include the reaction product of a starch and a polycarboxylic acid. The starch has a weight average molecular weight that ranges from 1×10.sup.6 Daltons to 1×10.sup.7 Daltons. The fiber-containing composite has an unaged tensile strength of greater than 4.0 and an aged tensile strength greater than 3.0. Also described are methods of making the fiber-containing composites. The methods may include applying a binder composition to fibers to form coated fibers, measuring a moisture content of the coated fibers, and curing the coated fibers in a curing oven to form the fiber-containing composite. The binder composition may include a starch having a weight average molecular weight that ranges from 1×10.sup.6 Daltons to 1×10.sup.7 Daltons, and a polycarboxylic acid.

The present invention is an assembly layer for a flexible device. The assembly layer is derived from precursors that include about 0 to about 50 wt % C.sub.1-C.sub.9 alkyl(meth)acrylate, about 40 to about 99 wt % C.sub.10-C.sub.24 (meth)acrylate, about 0 to about 30 wt % hydroxyl(meth)acrylate, about 0 to about 10 wt % of a non-hydroxy functional polar monomer, and about 0 to about 5 wt % crosslinker.

The present invention is an assembly layer for a flexible device. The assembly layer is derived from precursors that include about 0 to about 50 wt % C.sub.1-C.sub.9 alkyl(meth)acrylate, about 40 to about 99 wt % C.sub.10-C.sub.24 (meth)acrylate, about 0 to about 30 wt % hydroxyl(meth)acrylate, about 0 to about 10 wt % of a non-hydroxy functional polar monomer, and about 0 to about 5 wt % crosslinker.

An image display device is manufactured by: applying a liquid photo-curable resin composition having a total value of cure shrinkage ratios based on pre-curing and complete curing of 3% or more to a surface of the light-transmitting cover member or a surface of the image display member with a thickness greater than that of the light-shielding layer to cancel the step between the light-shielding layer and the light-shielding layer forming surface of the light-transmitting cover member; pre-curing the photo-curable resin composition with the irradiation of ultraviolet rays to form a pre-cured resin layer; bonding the light-transmitting cover member to the image display member such that the pre-cured resin layer is placed inside; and subjecting the pre-cured resin layer to the irradiation of ultraviolet rays to achieve the complete curing thereof. The pre-curing is conducted to obtain a cure shrinkage ratio less than 3% in the complete curing thereof.

An image display device is manufactured by: applying a liquid photo-curable resin composition having a total value of cure shrinkage ratios based on pre-curing and complete curing of 3% or more to a surface of the light-transmitting cover member or a surface of the image display member with a thickness greater than that of the light-shielding layer to cancel the step between the light-shielding layer and the light-shielding layer forming surface of the light-transmitting cover member; pre-curing the photo-curable resin composition with the irradiation of ultraviolet rays to form a pre-cured resin layer; bonding the light-transmitting cover member to the image display member such that the pre-cured resin layer is placed inside; and subjecting the pre-cured resin layer to the irradiation of ultraviolet rays to achieve the complete curing thereof. The pre-curing is conducted to obtain a cure shrinkage ratio less than 3% in the complete curing thereof.

A temporary substrate adhesive according to an embodiment includes a silane coupling agent and a photobase generator, but does not include a resin.

A temporary substrate adhesive according to an embodiment includes a silane coupling agent and a photobase generator, but does not include a resin.