Abstract: The present invention provides aptamer-modified polymers and materials thereof, which may be used for the binding of factors in a wound bed. For example, the aptamer-modified materials can be polypeptides conjugated to polymer foam materials. Such materials may be used, for example, for dressings, wound inserts, or pads.

Abstract: Disclosed are polymers containing a backbone comprising alternating N-protected hydroxymethylaniline units (“spacer”) and linker units.

Abstract: The present invention relates to a polymerizable composition comprising polyisocyanate(s) (A), polythiol(s) (B), thiol(s) (C) and catalyst(s) (D). The polyisocyanate(s) (A) is at least one bifunctional or higher functional alicyclic polyisocyanate; the polythiol(s) (B) is at least one compound selected from polythiols represented by the following general formula (B1); the thiol(s) (C) is at least one compound selected from thiols having general formula (3); and the catalyst(s) (D) is at least one polymerization catalyst selected from metal compounds, quaternary ammonium salts, organic sulfonic acids, tertiary amines and relative inorganic or organic salts.

Abstract: The invention relates to a polymer (P) comprising at least one photoinitiator moiety (PI) and at least one dye moiety (DYE), wherein said at least one photoinitiator moiety (PI) and at least one dye moiety (DYE) are covalently linked to said polymer (P). Additionally, the invention relates to said polymer (P) being end-functionalized with optionally substituted acryloyi groups. The fact that both of these moieties are tightly bonded within the polymer, and the cross-linked polymer, means that the opportunities for leaching/migration of these components is reduced or even eliminated. Inks comprising at least one of said polymers are also provided. Methods for the manufacture of the polymers, and for printing are provided.

Abstract: In various embodiments a urethane/molecular rebar formulation comprising a specific composition is disclosed. The composition comprises a urethane polymer or prepolymer/discrete carbon nanotube formulation. Utility of the urethane/molecular rebar composition includes improved foams and adhesives.

Abstract: Non-crystallizing oxazolidines as curing agents for polyisocyanates and polyurethanes. The curing agents are mixtures of at least one polyoxazolidine POU having at least two urethane groups and at least one polyoxazolidine POC having at least one carbonato group.

Abstract: Disclosed is a polyurethane resin which is obtained by a reaction between a polyisocyanate component, which contains 1,4-bis(isocyanatomethyl)cyclohexane including not less than 80% by mole of trans isomers, and an active hydrogen compound component.

Abstract: Provided is a novel fluorene-based polymer having urethane bonds and a method for preparing the fluorene-based polymer. According to the method, a diol compound is condensed with a diisocyanate instead of an acid dianhydride, and then an acid anhydride is reacted with the reaction mixture to introduce desired acid groups into the final polymer. Further provided is a negative-type photosensitive resin composition comprising of the fluorene-based polymer as a binder resin. The composition exhibits improved chemical resistance, good development margin and high sensitivity due to presence of the acid groups despite the low molecular weight of the fluorene-based polymer.

Abstract: The present invention relates to composition comprising at least one compound obtained from the reaction of at least one compound (i) having a refractive index nD20 of at least 1.50 comprising at least one isocyanate-reactable functional group —XH, wherein each of X is, independently, O or NR, at least one polyisocyanate (ii), and, optionally, at least one compound (iii) comprising at least one isocyanate-reactable functional group —YH and at least one curable functional group Q, wherein each of Y is, independently, O, NR or S, and its use for making high refractive index coatings and films.

Abstract: The composition of the present invention contains a product having a thiol group obtained by reacting an Sb or Bi oxide or an Sb or Bi halide with at least one kind of polythiol compounds selected from compounds having at least two thiol groups in a molecule.

Abstract: The invention relates to a polyurethane urea comprising structural units of formula (I), not terminated by at least one copolymer unit of polyethylene oxide and polypropylene oxide, and that can particularly be used for producing stent coatings. The invention further relates to a substrate having a base coating made of a polyurethane urea according to the invention. The invention further relates to a coating structure comprising at least one layer comprising active substances and made of a polyurethane urea according to the invention, and at least one layer free of active substances, made of a polyurethane urea according to the invention. The invention finally relates to a method for coating a substrate, wherein at least one layer made of a polyurethane urea according to the invention is applied to the substrate.

Abstract: Reaction products prepared from reactants including: (a) at least one compound of structural Formula (I): wherein R1 is selected from aryl and heteroaryl; X is selected from a direct bond, —O—, —S—, —NH—, alkylene, cycloalkylene, heterocyclylene, arylene, alkarylene, and heteroarylene; Y is a substituted alkylene group having at least two contiguous carbon atoms and which can be interrupted by one or more —O—, —S—, or —NH— moieties as defined herein, wherein the alkylene group of Y has substituents independently selected from —OH, —NH2, —SH, cycloalkyl, heterocyclyl, aryl, and heteroaryl, or two hydrogen atoms on the same carbon atom of Y are replaced by carbonyl, and wherein at least two substituents of Y are each independently selected from —OH, —NH2, and —SH, as defined herein; and (b) at least one isocyanate functional material.

Abstract: An object of the invention is to provide carboxyl group-containing polyurethanes that have small curing warpage and can give cured products having excellent electrical insulating properties and flexibility, curable compositions that contain the carboxyl group-containing polyurethane and can give cured products having good electrical insulating properties, cured products obtained from the compositions, flexible circuit boards covered with the cured products, and processes for manufacturing flexible circuit boards. The carboxyl group-containing polyurethane is obtainable from materials including a (poly)carbonate polyol (a), a polyisocyanate (b) and a carboxyl group-containing polyol (c). The (poly) carbonate polyol includes an organic residue derived from a dimer diol and an organic residue derived from a polyol having a C10-20 alicyclic structure.

Abstract: The present invention relates to polymeric materials having enhanced properties. In some cases, the materials may comprise polymers having shape-persistent portions which may enhance the mechanical properties of the material. The materials may exhibit higher stiffness or strength and ductility values, resulting in higher energy absorption and enhanced protection, as well as longer lifetimes for product usage. In some cases, the materials may be optically transparent and lightweight, making them suitable for in various applications including protective materials.

Abstract: The composition of the present invention contains a product having a thiol group obtained by reacting an Sb or Bi oxide or an Sb or Bi halide with at least one kind of polythiol compounds selected from compounds having at least two thiol groups in a molecule.

Abstract: The disclosure relates to biocompatible components useful for forming compositions for use as medical/surgical synthetic adhesives and sealants. Biocompatible components of the present disclosure may include a multifunctional amine or multifunctional polyol core, with isocyanate and/or polyalkylene oxide arms, which may optionally be capped with electrophilic or nucleophilic groups. These biocompatible components may, in embodiments, be combined with optional cross linkers to form adhesive and/or sealant compositions.

Abstract: Provided is a process which can be carried out upon the production of a polyurethane/thiourethane-based resin with the use of a polyisocyanate compound, a polyol compound, and a polythiol compound, without causing abrupt heat generation or viscosity increase. At least one polyol compound having at least one ether bond and two or more hydroxy groups in a molecule is used as the polyol compound, whereby a large heat generation or an abrupt viscosity increase are prevented from occurring upon blending monomer.

Abstract: The ring-containing modified resin is represented by the following chemical formula (1) R1[—(—O—CO—NH—R2—NH—CO—O—R3—)p—O—R4]q??(1) (in the chemical formula (1), R1 is a dehydroxyl residue of a resin having a benzene ring and/or a condensed ring and hydroxyl group: —R2— is deisocyanate group derived from an organic diisocyanate: —R3— is a dehydroxyl residue of polyol having number-average molecular weight of 200 to 30000: p is 1 to 3: —R4 is a hydrogen atom, alkyl group having 1 to 18 carbons, phenyl group: q is the same number as the number of the dehydroxyl residue of R1).

Abstract: Copolyesters containing secondary hydroxyl groups are useful polyols for manufacturing polyurethanes. These can be prepared by reacting a secondary hydroxyl-containing fatty acid or ester thereof with an initiator containing hydroxyl and/or primary or secondary amino groups. A copolyester of particular interest includes a poly(ethylene oxide) segment derived from a poly(ethylene oxide) initiator.

Abstract: Modified stable polyisocyanates are described having at least one isocyanate function modified by a group having cross-linking functionality.

Abstract: A golf ball having a core and at least one layer disposed about the core is disclosed. The at least one layer is formed from a composition having multiple reactive and/or non-reactive ingredients. At least one of these ingredients is an isocyanate having a fused or bridge cyclic structure that is partially alicyclic and partially aromatic.

Abstract: Thermoplastic polyurethanes having an alternating sequence of hard and soft segments in which a nanostructured polyhedral oligosilsesquioxane diol is used as a chain extender to form a crystalline hard segment constituting SMPs. The polyurethanes are formed by reacting a polyol, a chain extender dihydroxyl-terminated polyhedral oligosilsesquioxane and a diisocyanate. The polyurethanes have multiple applications including for example, implants for human health care, drug delivery matrices, superabsorbant hydrogels, coatings, adhesives, temperature and moisture sensors, etc.

Abstract: Phase change ink carrier compositions comprising an admixture of (1) at least one urethane resin; and/or (2) at least one mixed urethane/urea resin; and/or (3) at least one mono-amide; and/or (4) at least one polyethylene wax are provided. In addition, a phase change colored ink of such carrier compositions comprising a phase change ink compatible colorant are also provided. Embodiments of the present invention also include methods for producing a layer of the above phase change colored ink on the surface of a substrate by either direct or indirect printing. Such methods also encompassing using a polyethylene wax as an overcoat layer above such a phase change ink layer on a printed substrate.

Abstract: A modified polyurethane including a lipid substituent pendant from at least one urethane nitrogen and/or at least one carbon atom of the modified polyurethane, methods of preparing modified polyurethanes and the use thereof as an implantable biomaterial.

Abstract: The invention relates to the use of a compound with an alkylene oxide chain as a thickener of aqueous compositions, containing a filler and/or pigmented, white or colored, with the aim of supplying pigmentary compositions for paint which provide excellent pigmentary compatibility and a high viscosity at small and medium shear stress gradient. The invention also relates to the said non-ionic thickener as well as the aqueous composition, containing a filler and/or pigmented, white or colored, containing same.

Abstract: The invention provides an optical material being excellent in balance between the heat resistance, Abbe number and refractive index by providing a compound represented by the general formula (1): in the formula, k and n representing integers of 0 to 2 and 0 to 1, respectively, with the proviso that k and n are not simultaneously zero, and k=0 meaning that —(CH2)k- is not included in the formula.

Abstract: Thermoplastic polyurethanes having an alternating sequence of hard and soft segments in which a nanostructured polyhedral oligomeric silsesquioxane diol is used as a chain extender to form a crystalline hard segment constituting SMPs. The polyurethanes are formed by reacting a polyol, a chain extender dihydroxyl-terminated POSS and a diisocyanate. The polyurethanes have multiple applications including for example, implants for human health care, drug delivery matrices, superabsorbant hydrogels, coatings, adhesives, temperature and moisture sensors, etc.

Abstract: An inventive blue colorant comprising a chromophore having at least one polyester chain attached, through a suitable linking group (or groups), to the 1-position, the 4-position, or both, of an anthraquinone backbone is provided. Such colorants exhibit excellent amine/base stability and thermal stability, effective colorations, excellent low extraction rates, high lightfastness levels, particularly when incorporated within certain media and/or on the surface of certain polyurethane substrates, and most importantly excellent stability in the presence of excess of diisocyanates. The polyester chain or chains can be conveniently tailored to increase the solubility or compatibility in different types of polyurethane resin precursors thereby permitting the introduction of such excellent coloring chromophores within diverse polyurethane media and/or or diverse polyurethane substrates as well as provides a liquid colorant which facilitates handling.

Abstract: The invention pertains to a coating composition comprising a compound comprising at least one bicyclo-orthoester group and at least one other functional group. The invention also comprises a process for curing the present coating composition. Further, a process for making a bicyclo-orthoester-functional compound from the corresponding oxetane compound is described.

Abstract: The present invention relates to molded polyurethane/urea elastomers, and specifically to improved polyurethane/urea elastomers having high temperature stability to about 140–150° C. and low temperature flexibility at about ?35–(?40)° C., for use in dynamic applications. These elastomers are particularly useful for application in belts, specifically in automotive timing or synchronous belts, V-belts, multi V-ribbed or micro-ribbed belts, flat belting and the like. The polyurethane/urea elastomers of the present invention are prepared by reacting polyisocyanate prepolymers with symmetric primary diamine chain extenders, mixtures of symmetric primary diamine chain extenders and secondary diamine chain extenders, or mixtures of symmetric primary diamine chain extenders and non-oxidative polyols, which are all chosen to eliminate the need for catalysts via standard molding processes, and to improve phase separation.

Abstract: The invention concerns a thermoplastic copolyamide and composition comprising as matrix said thermoplastic copolyamide, and a method of making such thermoplastic copolyamide. More particularly it concerns a copolyamide of the statistical tree type resulting from the reaction between a plurifunctional monomer comprising at least three reactive functions to form an amide function, said functions being two different types, and bifunctional monomer conventionally used in making linear polyamides. The resulting copolyamide has a very low softness index in molten state compared to the linear polyamide and improved shock-resistant properties. The invention also concerns with methods for making these copolyamides and composition for molding, extruding or injecting parts. Said compositions comprise fillers and additives and said copolyamide as a matrix.

Abstract: The present invention relates to alkylenedioxythiophenes of the formula I having urethane-containing side groups: to their preparation and to their oligo- and polymeric derivatives (oligo- and poly(alkylenedioxythiophene)s).

Abstract: A process is disclosed for producing resilient polyurethane foams by foaming an organic polyisocyanate, an iso-cyanate-reactive compound and a fusible polymer. The improvement in the hardness of the foams is achieved without adversely affecting the other properties of the foams, such as tensile strength and elongation.

Abstract: The present invention can provide a lactone polyester diol at least containing &egr;-caprolactone and a dibasic acid as constructing component units, and a polyurethane obtained using the diol and an organic diisocyanate can provide a spandex filament which is more excellent in a recovering ability of elasticity, strength, hydrolysis resistance, and heat resistance.

Abstract: The two-component type polyurethane composition according to the present invention is obtained from a principal component containing a compound having an isocyanate group and a curing agent containing a compound having active hydrogen, and is characterized in that both the principal component and the curing agent contain substantially no thixotropic agent, the mixture of the principal component and the curing agent has a specific thixotropy-developing time and a specific slump, the active hydrogen compound has a specific flash point, and that the mass change of the two-component type polyurethane composition before/after boiling in boiling water under specific conditions is in a specific range.

Abstract: Bioerodible polyorthoesters useful as orthopedic implants or vehicles for the sustained delivery of pharmaceutical, cosmetic and agricultural agents contain hydrogen bonding groups and &agr;-hydroxy acid-containing groups.

Abstract: The invention is a degradable polyurethane resin obtained by reacting 2,5-/2,6-diisocyanatomethylbicyclo[2.2.1]heptane and/or a modified compound thereof with polyol comprising a single compound, mixture or copolycondensate selected from the group consisting of (A) polyhydroxycarboxylate polyol, (B) aliphatic polyester polyol and (C) saccharides, or (D) straight or branched polyol formed by condensation of (A) and/or (B) with aliphatic polyhydric alcohol having functionality of three or more, and the polyurethane resin has hydralyzability and biodegradability, is excellent in rigidity and elasticity in combination with flexibility as compared with conventionally known biodegradable resin, and can provide formed articles having outstandingly high elasticity and elongation and other unprecedented properties.

Abstract: The invention pertains to a coating composition comprising a) a first compound comprising at least one bicyclo-orthoester group, b) a second compound comprising at least two isocyanate groups, and c) a third compound comprising at least one thiol group. The invention also relates to a process for curing the present coating composition. More particularly, the latent hydroxyl groups of the bicyclo-orthoester groups have to be deblocked and reacted with the isocyanate-groups of the second compound if the present coating composition is to be cured.

Abstract: The present invention provides a lambda-shaped carbazole based chromophore, and a main-chain NLO polyurethane containing the same. The lambda-shaped structure reduces the plasticization to the main-chain polymers caused by the chromophore and increases temporal stability of the NLO coefficients of the main-chain NLO polyurethane. The NLO coefficients of the main-chain NLO polyurethane are stable because the efficiency of dipole alignment in electric field is increased due to the dipole thereof being perpendicular to the main chain of the polyurethane.

Abstract: Polyurethane elastomer fibers with superior mechanical and heat distortion properties are obtained by a method in which (a) a segmented polyurethane polymer is produced on the basis of a macro-diol, an aliphatic diisocyanate, and a chain extender with at least two hydroxy and/or amino groups, where the polymer has a molar excess of isocyanate groups over the hydroxy and/or amino groups from the macro-diol and chain extender; (b) the polyurethane polymer is melt-extruded to form a fiber; and (c) The extruded fiber is subjected to a post-treatment. Steps (a) and (b) are carried out under temperature conditions and within a time interval where essentially no allophanate will be formed, while step (c) is performed under temperature conditions and within a time interval in which the polyurethane polymer is cross-linked through the formation of allophanate.

Abstract: Synthetic polymers having moieties capable of covalent or hydrogen bonding to cellulose and one or more amphiphilic moieties are disclosed. These polymers are capable of providing two distinct properties to paper products, such as tissues, which properties heretofore have been imparted through the use of at least two different molecules. The backbone of these synthetic polymers is based on modified vinyl polymers, such as polyvinyl alcohol, polyacrylamides and polyacrylic acids.

Abstract: The present invention relates to a coating composition comprising: (a) a bicyclic oxazolidine compound; (b) a monocyclic oxazolidine compound; and (c) an isocyanate functional compound. The invention further relates to a method of coating a substrate with the coating composition and to a substrate coated with the coating composition.

Abstract: The present invention concerns biodegradable linear polyester urethanes as well as biodegradable crosslinked polyester urethanes issuing from the linear polyester urethanes in such a way that they are crosslinked by diisocyanate bridges. By varying the degree of crosslinking it is possible to adjust the physical, chemical and biological properties in the crosslinked polyester urethane as defined by the invention in a targeted manner. In particular, it is possible to vary the rate of biodegradation of said crosslinked polyester urethane because the biological degradation takes place at a slower rate as the degree of crosslinking increases. Furthermore, the object of the invention is a method of producing the polyester urethanes as defined by the invention, as well as its application in the form of sheets or foils, shaped rubber articles, containers, packaging materials, in the field of galenic pharmacy; and in the form of adhesives and adhesive tapes and the like.

Abstract: The present invention relates to a process for the preparation of trimerized polyisocyanates that contain at least 30 mole % of iminooxadiazinedione groups (asymmetric trimers) in the trimer mixture, by catalytically trimerizing a starting isocyanate selected from organic di- or polyisocyanates having a number average molecular weight of 140 to 600 and containing aliphatically, cycloaliphatically and/or araliphatically bound isocyanate groups in the presence of a quaternary phosphonium polyfluoride trimerization catalyst corresponding to the formulaR.sub.4 P.sup.+ F.sup.- n(HF)whereinR represents identical or different, optionally branched aliphatic, aromatic and/or araliphatic C.sub.1 -C.sub.20 groups, or two or more R groups may also form, with one another and with the phosphorus atom, saturated or unsaturated rings andn has a value of 0.1 to 20.

Abstract: A polyester or polyurethane polymer having a repeating unit represented by the following formula (1): ##STR1## wherein A is a polyol compound residue represented by the following formula (2) or formula (3): ##STR2## wherein R.sup.1 and R.sup.3 each individually represents an alkyl group having from 1 to 4 carbon atoms, and R.sup.2 and R.sup.4 each individually represents a hydrogen atom or a methyl group; and B is represented by the following formula (4) or formula (5): ##STR3## wherein X represents an alkylene, cycloalkylene, arylene or arylalkylene group having from 1 to 12 carbon atoms; ##STR4## wherein Y represents an alkylene, cycloalkylene, arylene or arylalkylene group having from 1 to 12 carbon atoms.

Abstract: A charge transporting block and an insulating block are block copolymerized or graft copolymerized to form a charge transporting copolymer. The charge transporting polymers may be used in an electrophotographic photoreceptor and an electrophotographic device.

Abstract: A polycarbodiimide having excellent heat resistance and humidity resistance, which comprises a structural unit represented by the following formula (A) ##STR1## wherein R represents a divalent organic group represented by any one of the following formulae (I) and (II), n is an integer of 2 to 400 ##STR2## wherein X.sub.1 to X.sub.4 independently represent a hydrogen or an alkyl group having 1 to 3 carbon atoms.

Abstract: The present invention to a coating composition comprising:(a) a bicyclic oxazolidine compound of the structure: ##STR1## (b) a monoyclic oxazlidine compound of the structure: ##STR2## (c) an isocyanate functional compound, and (d) a resin comprising a functional group selected from hydroxyl and amine.The invention further relates to a method of coating a substrate with the coating composition and to a substrate coated with the coating composition.

Abstract: An adhesive resin composition comprising a polycarbodiimde resin and a bisalkenyl-substituted nadimide and an adhesive sheet using the resin composition.The adhesive resin composition can adhere in a short time even at low temperature, has a high heat resistance, has a low hygroscopic property, and is hard to cause package crackings, etc.

Abstract: This invention relates to a coating composition for precoated steel sheets which are required to have high hardness, high workability and high distinctness of image, and to a method for producing a precoated steel sheet having a coating film of the composition. The composition is prepared by adding a compound of any of the following (a) to (c) to a coating composition consisting essentially of a polyol and containing, as the curing agent, an isocyanate compound or an amino resin, and the coating film of the composition has both high-level workability and high-level hardness.(a) Polyester compounds comprising main repeating units of a general formula (1): ##STR1## wherein n is an integer; and R is an alkylene group having 10 or less carbon atoms, or a 1,4-cyclohexylene-dimethylene group, or a neopentylene group, or a polyoxyalkylene group.