The present invention generally relates to the formation, chemistry and application of biologically active compositions. More particularly, the present invention relates to certain dyes, specifically porphyrin and chlorin derivatives, in combination with inventive polymers, i.e. light-cleavable polymers, that can be used as photosensitizer compositions for a wide range of light irradiation treatments such as photodynamic therapy of cancer, infections and other diseases. The dye derivatives may either be adsorbed on, or incorporated in, or attached to specific polymers, which as well form part of the invention.

Organic coating compositions, particularly antireflective coating compositions for use with an overcoated photoresist, are provided that comprise that a blend of two or more resins, where one resin has epoxy groups either pendant or fused to the polymer backbone. Preferred coating compositions include: 1) a first resin that comprises one or more epoxy reactive groups; and 2) a crosslinker resin that is distinct from the first resin and comprises epoxy groups.

Photodegradable polymers derived from biomass are provided, together with methods of making and methods of using the polymers. The photodegradable polymers can be derived from at least a first monomeric unit and a second monomeric unit and an optional third monomeric unit. The first monomeric unit is a dicarboxylic acid and includes a furan group and the second monomeric unit includes a nitrobenzyl group. Methods of recycling the polymers including irradiating the polymers to yield recycled monomers and oligomers are also disclosed.

A polyethylene terephthalate functionalized with polyether amine to obtain antibacte-rial properties is described. Described are also uses of and methods for producing this functionalized polyester.

The present invention relates to a polymer comprising repeating units consisting of a substituted pyrrole ring. In particular, the repeating units consist of substituted pyrrole containing polar groups capable of interacting with carbon allotropes such as carbon nanotubes, graphene or nanographites, in order to improve the chemical-physical characteristics of the allotropes mainly by increasing their dispersibility and stability in liquid media and in polymer matrices. The invention also relates to products of addition of these polymers with carbon allotropes in order to obtain easily dispersible macromolecules.

There is provided a polymer comprising: (i) a repeat unit derived from a compound of formula (I) (Formula (I)) wherein, R.sup.1 and R.sup.2 are each independently selected from OH, OR′, SH, SR′, NH.sub.2, NHR′ and NR′.sub.2; R′ is C.sub.1-20 hydrocarbyl; each n is independently 0 or an integer between 1 and 6; each m is independently 0 or an integer between 1 and 4, and preferably at least one m is 1; and q is an integer between 1 and 8; and; (ii) a biologically active molecule, wherein said biologically active molecule is covalently bonded to said repeat unit; as well as methods for preparing such polymers, particles comprising said polymers and uses of said polymers and particles including use in the treatment of disease.

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An amide-group containing polyether-ester material, a preparation method thereof, a molded article and a forming method thereof are provided. The amide-group containing polyether-ester material has an amide group content ranging from 0.5 to 20 mol % and a work of rupture greater than or equal to 90 MJ/m.sup.3. The molded article includes the amide-group containing polyether-ester material.

Polycarbonate block copolymers are provided, which have: (A) a polyester block of chemical formula 1; and (B) a polycarbonate block derived from a dihydric phenol of chemical formula 3 compound and phosgene. The copolymers may be prepared by (1) polymerizing ester oligomers to form a compound of chemical formula 1; and (2) copolymerizing the ester oligomer obtained in (1) with a polycarbonate oligomer prepared from a dihydric phenol compound of chemical formula 3 and phosgene, in the presence of a polymerization catalyst. The block copolymer may have a viscosity average molecular weight (Mv) of 10,000 to 200,000. The thermoplastic copolymer resins have excellent heat resistance, transparency, impact strength, and fluidity, and thus can be usefully applied in various products, including office devices, electric/electronic products, and automotive interior/exterior parts; ##STR00001##

A method for producing an alkoxysilane polymer via a carbamate, thiocarbonate or carbonate-terminated prepolymer (IIIa) or (IIIb) includes reaction of a polymer backbone of formula (I) terminated with at least two amino, mercapto or hydroxyl groups and with a chloroformate of formula (IIa) or a pyrocarbonate of formula (Ilb) (I) (IIa) (IIb) (IIIa) (IIIb), wherein R.sup.1 and R.sup.3 represent a linear or branched, saturated or unsaturated alkyl or alkenyl group with 1 to 10 carbon atoms or a mono- or polycyclic aliphatic or aromatic ring system with 5 to 18 carbon atoms in the ring system, which is optionally substituted by one or more groups R.sup.2, X is oxygen or sulphur, n is 0 for a linear or branched, saturated or unsaturated alkyl or alkenyl group and is 0.1 or 2 for a mono- or polycyclic aliphatic or aromatic ring system, and A represents a polymer backbone.

A method for preparing tyrosine derived polyarylates includes combining a desaminotyrosyl-tyrosine ethyl ester, a desaminotyrosyl-tyrosine benzylester, succinic acid and a catalyst in a flask to produce a first mixture. Methylene chloride is added to the first mixture to produce a first suspension. Diisopropylcarbodiimide (DIPC) is added to the first mixture to produce a first solution. The first solution is added to a non-solvent to produce a precipitate. The precipitate is dissolved in methylene chloride to form a polymer solution. The polymer solution is blended with a slurry to produce polymer shreds. The polymer shreds are blended with a second slurry to produce a tyrosine derived polyarylate.