An alkyd resin is provided wherein the alkyd resin is obtainable by polymerization of reaction components comprising a polybasic acid, a polyhydric alcohol, and unsaturated fatty acids, or by further reacting such alkyd resin with a polyurethane prepolymer with emulsifying groups. Also provided are a coating composition comprising such alkyd resin as binder polymer, and a substrate coated with such coating composition.

Coatings comprising an uncured branched polyester-urethane resin prepared by free radical polymerization of an unsaturated polyester prepolymer having a polyol segment, an unsaturated polycarboxylic acid and/or an anhydride and/or ester thereof, and a urethane segment, wherein the polymerization occurs primarily by reaction of the unsaturation are disclosed.

The present invention provides a resist underlayer film that has a wide focus position range within which a good resist shape can be obtained. A resist underlayer film-forming composition for lithography comprising a linear polymer that is obtained by a reaction of a diepoxy group-containing compound (A) with a dicarboxyl group-containing compound (B). The linear polymer has structures of the following formulae (1), (2), and (3) derived from the diepoxy group-containing compound (A) or the dicarboxyl group-containing compound (B): ##STR00001##
The linear polymer preferably contains a polymer obtained by a reaction of two diepoxy group-containing compounds (A) each having structures of Formulae (1) and (2) with a dicarboxyl group-containing compound (B) having a structure of Formula (3), or a polymer obtained by a reaction of a diepoxy group-containing compound (A) having a structure of Formula (1) with two dicarboxyl group-containing compounds (B) each having structures of Formulae (2) and (3).

A thermosetting resin composition, a thermosetting resin composition for protective films, a thermosetting resin composition for planarizing films, and a method for producing a cured film, a protective film, or a planarizing film by using the resin composition. A thermosetting resin composition has a polymer having a structural unit of Formula (1) below, a curing agent in an amount of 0% by mass to 30% by mass with respect to the polymer, and a solvent. When the thermosetting resin composition includes the curing agent, the curing agent is at least one compound selected from polyfunctional (meth)acrylate compounds and polyfunctional blocked isocyanate compounds:

##STR00001##

(wherein A.sup.1 is a C.sub.2 or C.sub.3 alkenyl group or alkynyl group, and A.sup.2 is a C.sub.2 alkenylene group or alkynylene group).

In one aspect, compositions are described herein. In some embodiments, a composition described herein comprises the reaction product of (i) citric acid, a citrate, or an ester of citric acid with (ii) a polyol, and (iii) a monomer comprising one or more alkyne moieties and/or azide moieties. The reaction product, in some instances, comprises a polymer. Further, in some cases, a composition described herein comprises a plurality of polymers. In some embodiments, the polymers are selected to be reactive with one another through a click chemistry reaction scheme to form a polymer network. In another aspect, medical implants and medical devices are described herein, the implants and devices comprising a polymer or polymer network described herein.

Disclosed are biomimetic imageable polymeric materials that include a polymer or copolymer and a covalently-linked contrasting agent where the disclosed films are both bioresorbable and visible by X-ray fluoroscopic imaging and/or magnetic resonance imaging. The invention also provides methods of preparing the polymeric materials and their use in and as implantable medical devices.

An uncured branched polyester-urethane resin prepared by free radical polymerization of an unsaturated polyester prepolymer having a polyol segment, an unsaturated polycarboxylic acid and/or an anhydride and/or ester thereof, and a urethane segment, wherein the polymerization occurs primarily by reaction of the unsaturation is disclosed. Coatings comprising the same are also disclosed, as are substrates coated at least in part with such coatings.

Disclosed herein are polyesters including at least one diacid-based building block, at least one diol-based building block and at least one polyol-based building block, where the diacid-based building block includes a group of formula (I)

##STR00001## where R.sup.1 is a group according to the general formula CH.sub.2CH.sub.2O(AO).sub.xH, with x being a number from zero to 75 and AO being alkylene oxide selected from ethylene oxide and combinations of ethylene oxide with at least one of propylene oxide and butylene oxide, where polyol building blocks are derived from compounds having at least three alcoholic hydroxyl groups, where the asterisks indicate bonds to diol or polyol building blocks through the ester oxygen atoms, and
where the molar ratio of diacid-based building block to the sum of diol building blocks and polyol building blocks is in the range from 2:1 to 1:2.

In various embodiments, the present invention provides well-defined biodegradable poly(lactone-b-propylene fumarate) diblock and triblock polymers formed using a novel one-pot, scalable ring-opening block-order copolymerization (ROBOCOP) technique that utilizes magnesium 2,6-di-tert-butyl-4-methylphenoxide (Mg(BHT).sub.2(THF).sub.2) to switch from the ROP of cyclic esters to the ROCOP of maleic anhydride (MAn) and propylene oxide (PO) to produce PPF based block copolymers for application in additive manufacturing and patient specific regenerative medicine. These block copolymers are fully resorbable and can be photochemically crosslinked in a number of applications, including 3D printing. By adding the lactone block to the PPF polymer, the viscosity of the resulting block copolymer at working temperatures can be precisely controlled and the quantity of the reactive diluent in printable resins can be reduced or eliminated.

In one aspect, compositions are described herein. In some embodiments, a composition described herein comprises the reaction product of (i) an alkoxylated or alkenoxylated citric acid, citrate, or ester of citric acid, and optionally a non-alkoxylated and non-alkenoxylated citric acid, citrate, or ester of citric acid, with (ii) a polyol. Additionally, in some cases, a composition described herein comprises the reaction product of (i) and (ii) above and (iii) one or more additional monomers. In some cases, the composition is cross-linked by the use of one or more oxidants such as sodium periodate (NaIO.sub.4) and/or silver nitrate (AgNO.sub.3), which can be reduced into a reduced oxidant that provides short-term antimicrobial activity. Such a composition can have both short-term and long-term antibiotic and antifungal activity.