A transparent polyimide film manufacturing method includes following steps: producing a polyimide film having a tensile modulus of elasticity greater than 5.4 GPa ((N/m.sup.2)109), a light transmittance greater than 85%, and a chromaticity b* less than 2; providing an ether-free dianhydride and a diamine to form an ether-free polyamic acid; reacting the ether-free polyamic acid with an aromatic cyclic dianhydride to form a copolymerized polyamic acid; and chemically cyclizing the copolymerized polyamic acid to form a transparent polyimide film.

This cured film-forming resin composition is characterized in comprising: as a component (A), a polymer containing a structural unit derived from a first monomer having the structure with formula (1); a photoacid generator as a component (B); fine particles as a component (C); and a solvent (in the formula, R.sup.1 represents hydrogen or a methyl group and R.sup.2 represents an organic group capable of undergoing elimination with the oxygen atom bonded thereto). The cured film-forming resin composition forms a cured film that has solvent resistance to organic solvents and a high liquid repellency (lyophobicity) wherein the lyophilicity/lyophobicity can be easily varied using small ultraviolet exposure doses and the lyophilic areas have a high lyophilicity even for high surface tension liquids.

Polymer particle embolics and methods of making same are described. The particle embolics can be used as embolization agents.

Provided are compounds that may function as functionalized polymerization initiators, for instance in the manufacture of ophthalmic lenses, and to methods of such manufacture. The compounds are of formula I: ##STR00001##
wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, T, p, q, and n are as defined herein.

Provided are compounds that may function as functionalized polymerization initiators, for instance in the manufacture of ophthalmic lenses, and to methods of such manufacture. The compounds are of formula I: ##STR00001##
wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, T, p, q, and n are as defined herein.

Various embodiments of the present invention are directed to switchable carboxybetaine-based polymers, hydrogels, and/or elastomers, along with novel related monomers, crosslinkers, and methods. Under acidic conditions, the materials undergo self-cyclization and can catch and kill bacteria. Under neutral/basic conditions, these materials undergo ring-opening and can release killed bacterial cells and resist protein adsorption and bacterial attachment. These smart polymers, hydrogels and elastomers also show excellent mechanical properties making them highly desirable for many biomedical applications.

The present disclosure provides cellulose reactive glyoxalated vinylamide polymers which impart improved wet strength decay properties, as well as high efficiency of wet strength build in paper products. A method of preparing a cellulose reactive glyoxalated vinylamide polymer composition, and methods of its use in maunfacturing paper products, as well as the resulting paper products, are also provided.

The present disclosure provides cellulose reactive glyoxalated vinylamide polymers which impart improved wet strength decay properties, as well as high efficiency of wet strength build in paper products. A method of preparing a cellulose reactive glyoxalated vinylamide polymer composition, and methods of its use in maunfacturing paper products, as well as the resulting paper products, are also provided.

The invention provides novel bromine-containing polymers which have excellent heat resistance and are capable of imparting flame retardance or novel flame-retardant, bromine-containing polymers which have excellent heat resistance and optical characteristics, and methods for producing such polymers. The invention relates to a polymer which includes structural units of the following general formula (1): ##STR00001##
wherein R.sub.1s, R.sub.2s, m, p and the asterisks are as defined in the specification and the claims, and
to a method for producing such polymers.

The present invention provides a self-repairing material having self-repairing properties and shape memory properties, as well as high dynamic strength, and also provides a method for manufacturing the same. The self-repairing material of the present invention comprises a polymer comprising specific monomer units in specific ratios, and the concentration of the monomer units is within a specific range.