The pressure sensitive adhesive sheet is a sheet shaped pressure sensitive adhesive including an acryl-based base polymer. The acryl-based base polymer contains an acryl-based segment and a urethane-based segment, and a content of the urethane-based segment is 3 to 30 parts by weight based on 100 parts by weight of the acryl-based segment. The urethane-based segment includes at least one urethane chain selected from the group consisting of a polyether urethane and a polyester urethane. The content of the urethane-based segment other than the polyether urethane-based segment is 15 parts by weight or less based on 100 parts by weight of the acryl-based segment.

The pressure sensitive adhesive sheet is a sheet shaped pressure sensitive adhesive including an acryl-based base polymer. The acryl-based base polymer contains an acryl-based segment and a urethane-based segment, and a content of the urethane-based segment is 3 to 30 parts by weight based on 100 parts by weight of the acryl-based segment. The urethane-based segment includes at least one urethane chain selected from the group consisting of a polyether urethane and a polyester urethane. The content of the urethane-based segment other than the polyether urethane-based segment is 15 parts by weight or less based on 100 parts by weight of the acryl-based segment.

There is provided a carbon material dispersion which has excellent dispersibility and in which the dispersibility is retained stably over a long period of time even when the carbon material dispersion contains a carbon material at a high concentration. The carbon material dispersion is a carbon material dispersion containing a carbon material, water, and a polymeric dispersant, wherein the polymeric dispersant is a polymer including 5 to 40% by mass of a constituent unit (1) derived from a monomer 1, such as 2-vinylpyridine, 50 to 80% by mass of a constituent unit (2) derived from a monomer 2 represented by formula (1) (wherein R.sub.1 represents a hydrogen atom or the like, A represents O or NH, X represents an ethylene group or a propylene group, Y represents O, NHCOO, or NHCONH, each of R.sub.2 represents a hydrogen atom or the like, n represents 20 to 100, and R.sub.3 represents a hydrogen atom or the like), and 0.5 to 40% by mass of a constituent unit (3) derived from a monomer 3 copolymerizable with above-described monomers.

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The invention provides polymers comprising repeating units derived from (a) from 16% by weight to about 35% by weight of said polymer of at least one N-vinyl lactam monomer; (b) at least one monomer selected from the group consisting of functionalized and unfunctionalized C.sub.1-C.sub.6 alkyl (meth)acrylates, C.sub.1-C.sub.6 alkyl (meth)acrylamides and combinations thereof; and (c) at least one monomer selected from the group consisting of functionalized and unfunctionalized C.sub.8-C.sub.30 branched alkyl (meth)acrylates, C.sub.8-C.sub.30 branched alkyl (meth)acrylamides, and combinations thereof; wherein the polymer has a glass transition temperature of greater than about 45 C. The invention further provides various compositions, such as, personal care, sun care, coatings, and pharmaceutical compositions comprising the polymers described herein. The invention furthermore provides water-resistant sun care compositions comprising the polymers described herein. Subscripts x, y and z are described herein. (Formula (I)) ##STR00001##

The invention provides polymers comprising repeating units derived from (a) from 16% by weight to about 35% by weight of said polymer of at least one N-vinyl lactam monomer; (b) at least one monomer selected from the group consisting of functionalized and unfunctionalized C.sub.1-C.sub.6 alkyl (meth)acrylates, C.sub.1-C.sub.6 alkyl (meth)acrylamides and combinations thereof; and (c) at least one monomer selected from the group consisting of functionalized and unfunctionalized C.sub.8-C.sub.30 branched alkyl (meth)acrylates, C.sub.8-C.sub.30 branched alkyl (meth)acrylamides, and combinations thereof; wherein the polymer has a glass transition temperature of greater than about 45 C. The invention further provides various compositions, such as, personal care, sun care, coatings, and pharmaceutical compositions comprising the polymers described herein. The invention furthermore provides water-resistant sun care compositions comprising the polymers described herein. Subscripts x, y and z are described herein. (Formula (I)) ##STR00001##

Provided herein are crosslinked polymers useful in orthodontic appliances and light polymerizable liquid compositions and formulations useful for making crosslinked polymers. Also provided are methods of making an orthodontic appliance comprising a cross-linked polymer formed by a direct fabrication technique.

Provided herein are crosslinked polymers useful in orthodontic appliances and light polymerizable liquid compositions and formulations useful for making crosslinked polymers. Also provided are methods of making an orthodontic appliance comprising a cross-linked polymer formed by a direct fabrication technique.

A process for obtaining a cationic polymer is disclosed. The cationic polymer is obtained by polymerization of at least one cationic monomer, at least one crosslinker and optionally further monomers, such as nonionic monomers, associative monomers and/or chain transfer agents. The cationic polymer has an at least bimodal molecular weight distribution with at least one first peak (P1) and at least one second peak (P2), wherein the first peak has a lower average sedimentation coefficient of 100 Sved and the second peak has a higher average sedimentation coefficient of 1000 Sved. The polymerization is carried out in two subsequent steps I) and II). In step II), the crosslinker is either completely absent or present in a very limited amount. Step II) is carried out after the polymerization of step I) is finished or vice versa.

Polymers useful as catalysts in non-enzymatic saccharification processes are provided. Provided are also methods for hydrolyzing cellulosic materials into monosaccharides and/or oligosaccharides using these polymeric acid catalysts.

Polymers useful as catalysts in non-enzymatic saccharification processes are provided. Provided are also methods for hydrolyzing cellulosic materials into monosaccharides and/or oligosaccharides using these polymeric acid catalysts.