An adhesive film for polarizing plates includes a (meth)acrylic copolymer obtained by polymerizing about 15 wt % to about 30 wt % of a (meth)acrylic monomer having a hetero-alicyclic ring. The adhesive film has a storage modulus (G′) of about 30 kPa or greater as determined from Frequency sweep testing at 85° C. by oscillation at an angular speed of 10.sup.−3 rad/s to 10.sup.2 rad/s. An adhesive composition for the same, a polarizing plate including the same, and an optical display device including the same are also disclosed.

The present invention provides an epoxy resin composition capable of exhibiting high moisture resistance and reducing reduction in adhesion at high temperature and high humidity. Provided is an epoxy resin composition containing: a modified polyvinyl acetal resin containing a hydrogen-bonding group-containing constitutional unit; and an epoxy resin, the modified polyvinyl acetal resin having an equilibrium moisture absorption of 5 to 20% by weight as measured with an infrared moisture meter after standing at 40° C. and 90% RH for seven days.

The present invention provides an epoxy resin composition capable of exhibiting high moisture resistance and reducing reduction in adhesion at high temperature and high humidity. Provided is an epoxy resin composition containing: a modified polyvinyl acetal resin containing a hydrogen-bonding group-containing constitutional unit; and an epoxy resin, the modified polyvinyl acetal resin having an equilibrium moisture absorption of 5 to 20% by weight as measured with an infrared moisture meter after standing at 40° C. and 90% RH for seven days.

A polyacrylamide resin has at least one kind of a first unit represented by the following formulas (1) to (4) and a second unit represented by the following formula (5).

##STR00001##

(In the above-described formulas (1) to (4), R1 represents a hydrogen atom, a methyl group, an ethyl group, or a benzyl group; R2 and R3 are independent and represent a hydrogen atom, a methyl group, an ethyl group, or a benzyl group; and X represents an anion.)

##STR00002##

(In the above-described formula (5), R4 represents a hydrogen atom or a methyl group and R5 represents a hydrogen atom, an alkali metal ion, or an ammonium ion.)

A polyacrylamide resin has at least one kind of a first unit represented by the following formulas (1) to (4) and a second unit represented by the following formula (5).

##STR00001##

(In the above-described formulas (1) to (4), R1 represents a hydrogen atom, a methyl group, an ethyl group, or a benzyl group; R2 and R3 are independent and represent a hydrogen atom, a methyl group, an ethyl group, or a benzyl group; and X represents an anion.)

##STR00002##

(In the above-described formula (5), R4 represents a hydrogen atom or a methyl group and R5 represents a hydrogen atom, an alkali metal ion, or an ammonium ion.)

A method for improving sudsing profile of laundry detergent compositions with a cationic polymer. Related liquid detergent compositions having a cationic polymer. The cationic polymer may be characterized by having a weight average molecular weight (Mw) ranging from 1,000 to 300,000 Daltons and by containing: (i) from 35 mol % to 85 mol % of a first, nonionic structural unit derived from (meth)acrylamide (AAm); (ii) from 10 mol % to 65 mol % of a second, cationic structural unit; and (iii) from 0.1 mol % to 35 mol % of a third, anionic structural unit derived from (meth)acrylic acid (AA) or anhydride thereof, while the total mol % of (i)-(iii) adds up to 100 mol %, and the molar ratio of (ii) to (iii) is greater than 1.

A method for improving sudsing profile of laundry detergent compositions with a cationic polymer. Related liquid detergent compositions having a cationic polymer. The cationic polymer may be characterized by having a weight average molecular weight (Mw) ranging from 1,000 to 300,000 Daltons and by containing: (i) from 35 mol % to 85 mol % of a first, nonionic structural unit derived from (meth)acrylamide (AAm); (ii) from 10 mol % to 65 mol % of a second, cationic structural unit; and (iii) from 0.1 mol % to 35 mol % of a third, anionic structural unit derived from (meth)acrylic acid (AA) or anhydride thereof, while the total mol % of (i)-(iii) adds up to 100 mol %, and the molar ratio of (ii) to (iii) is greater than 1.

To provide an aqueous composition for aqueous coating that contains a polymerized substance of a N-vinyl carboxylic acid amide and that dries efficiently when used to produce a coating substance. A composition for aqueous coating liquid, comprising at least a copolymer of a N-vinyl carboxylic acid amide monomer and a monomer of a salt of an unsaturated carboxylic acid, and water, in which the molar ratio between the N-vinyl carboxylic acid amide monomer and the monomer of a salt of an unsaturated carboxylic acid is 7.0:93.0 to 93.0:7.0, and the weight-average molecular weight of the copolymer is 15,000 to 2,500,000.

To provide an aqueous composition for aqueous coating that contains a polymerized substance of a N-vinyl carboxylic acid amide and that dries efficiently when used to produce a coating substance. A composition for aqueous coating liquid, comprising at least a copolymer of a N-vinyl carboxylic acid amide monomer and a monomer of a salt of an unsaturated carboxylic acid, and water, in which the molar ratio between the N-vinyl carboxylic acid amide monomer and the monomer of a salt of an unsaturated carboxylic acid is 7.0:93.0 to 93.0:7.0, and the weight-average molecular weight of the copolymer is 15,000 to 2,500,000.

A vinyl amine containing polymer comprises randomly distributed repeating monomer units having at least two of the following formulae:

##STR00001## wherein, R1 is a hydrogen atom or a methyl group; and wherein the vinyl amine containing polymer comprises repeating monomer unit III and/or IV in a total amount of from about 1.5 weight percent to about 8 weight percent based on a total weight of the polymer.