Abstract: The present inventioN relates to fibers comprising a polyesteramide (PEA) having a chemical formula described by structural formula (IV), wherein ?m+p varies from 0.9-0.1 and q varies from 0.1 to 0.9, ?m+p+q=1 whereby m or p could be 0, ?n is about 5 to about 300; (pref. 50-200), —R1 is independently selected from the group consisting of (C2-C20) alkylene or (C2-C20) alkenylene and combinations thereof; —R3 and R4 in a single backbone unit m or p, respectively, are independently selected from the group consisting of hydrogen, (C1-C6)alkyl, (C2-C6)alkenyl, (C2-C6)alkynyl, (C6-C10)aryl, —(CH2)SH, —(CH2)2S(CH3), —CH2OH, —CH(OH)CH3, —(CH2)4NH3+, —(CH2)3NHC(?NH2+)NH2, —CH2COOH, —(CH2)COOH, —CH2—CO—NH2, —CH2CH2—CO—NH2, —CH2CH2COOH, CH3—CH2—CH(CH3)—, (CH3)2—CH—CH2—, H2N—(CH2)4—, Ph-CH2—, CH?C—CH2—, HO-p-Ph-CH2—, (CH3)2—CH—, Ph-NH—, NH—(CH2)3—C—, NH—CH?N—CH?C—CH2—.

Abstract: A composition including a) 55-98.9 wt % of at least one type of triblock copolymer (A) of formula (1) R—B-A-B—R??(1) b) 0.1-15 wt % of at least one surfactant (B) and c) 1-30 wt % of water, wherein A is a hydrophilic block having a number average molecular weight (Mn) of 100-1,000 Da, B is a hydrophobic block made from monomers having at least a monomer B1 and a monomer B2, wherein B1 and B2 have the largest weight contents in the hydrophobic block and B1 has a lower molecular weight than B2, wherein R is an end group which is H or a C1-C30 organic moiety, wherein the composition is fluid in a temperature range of 0° C. to 37° C., wherein the weight % are relative to the sum of a), b) and c), and wherein the sum of components a), b) and c) is at least 80 wt % of the entire composition, preferably at least 90 wt %; to the use of the composition and to pharmaceutical compositions having said composition and an active pharmaceutical ingredient.

Abstract: Methods of making sequence-defined polymers and sequence-defined polymers. The methods are based on the orthogonal reactivity of monomers having at least two different functional groups. The sequence-defined polymers can be used in various applications. For example, the SDPs (e.g., pH sensitive SDPs) are used in cell lysis methods or as molecular vehicles to transport drug cargo into cells.

Abstract: A composition for preparing an optical film, comprising a tetracarboxylic acid dianhydride represented by Chemical Formula 1, a first diamine represented by Chemical Formula 2, and a second diamine represented by Chemical Formula 3, wherein an amount of the second diamine represented by Chemical Formula 3 is equal to or less than 30 mol % based on the total amount of the first and second diamines: wherein, R1 to R5, n1 to n3 are defined in the specification.

Abstract: The present invention provides carbamylation compositions of one or more urea compounds, one or more polyols and a monovalent transition metal or alkali metal catalyst (i), such as lithium ethylhexanoate, which compositions are substantially isocyanate free, enjoy reduced toxicity in comparison to tin catalysts, and which are useful in making polycarbamates which themselves provide compositions for making crosslinked polyurethanes.

Abstract: A fiber fluidic system may be used to produce particles (e.g., NPs and/or microparticles). The fiber fluidic system may include a cylinder with a plurality of elongated fibers oriented along a length of the cylinder. The cylinder may have a first opening at or near a first end of the cylinder and a second opening downstream of the first opening. A constrained phase fluid may be provided through the first opening and a free phase fluid may be provided through the second opening to produce particles (e.g., NPs and/or microparticles) through a second end of the cylinder. The fiber fluidic system may be used to continuously produce the particles at high throughput.

Abstract: Amino acid-based poly(ester amide) (PEA) macromers (e.g., functional PEA macromers) and methods for preparing amino acid-based poly(ester amide) (PEA) macromers. The functional PEA macromers can comprise functional groups such as hydroxyl, amine, sulfonic acids, carboxyl, thiol and acryloyl at the two terminuses of the PEA macromers. The content of the terminal functional groups on the macromers can be precisely controlled by adjusting the molar ratio of reactive monomers. The resulting versatility of these new functional PEA macromers can be used to fabricate a wide range of PEAs and PEA hybrid derivatives with very different chemical, physical, mechanical, thermal and biological properties. The functional PEA macromers can also be polycondensed into forming block PEA polymers.

Abstract: The present invention provides a preparation method of polyimide, comprising the following steps: a) carrying out a dehydration polymerization reaction on a diamine and an anhydride of an organic acid in a non-polar solvent to obtain a mixture, the non-polar solvent being one or more of arene, aliphatic hydrocarbon, halogenated arene and halogenated aliphatic hydrocarbon, and the anhydride of the organic acid being one or more of dianhydride and single anhydride: and b) filtering the mixture obtained in step a) and drying to obtain the polyimide. In the present invention, the dehydration polymerization reaction between the diamine and the anhydride of the organic acid can be carried out directly in the non-polar solvent to obtain the polyimide which cannot be dissolved in the non-polar solvent. Therefore, polyimide powder with fine particles can be obtained by directly filtering and drying the reaction mixture without washing.

Abstract: When a plurality of striped molded products are molded at a time, the molded products having a striped pattern and an outstanding design property are obtained by preventing part of molten resins from being unevenly distributed in an inappropriate manner when being fed into a cavity of a metal mold. A hot runner nozzle is provided with a first resin flow path and a plurality of second resin flow paths. The first flow path has a funnel section which continues with a nozzle gate at a centripetal position and which allows a first molten resin to be gathered at the centripetal position of the funnel section so as to feed the resin into the nozzle gate. The second resin flow paths have a plurality of corresponding discharge ports facing and communicating with the funnel section of the first resin flow path, each of the discharge ports being disposed around the centripetal position, so that the second molten resin different from the first molten resin is fed into the funnel section.

Abstract: Provided herein is a cigarette pack formed of a moisture barrier coated paper material. The paper material includes a base substrate, a first polymer coating, a second polymer coating, and a third polymer coating. The first polymer coating, the second polymer coating, and the third polymer coating provide a barrier for moisture and air exchange through the paper material. The first polymer coating, the second polymer coating, and the third polymer coating also provide heat and pressure sealability capabilities to the paper material.

Abstract: Compositions and methods for a melt processable semicrystalline poly(aryl ether ketone) incorporating phthalazinone and 4,4?-biphenol as comonomer units are described herein. The polymers are resistant to and insoluble in common organic solvents and liquids as well as in aggressive organic solvents such as chloroform and chlorinated liquids. The polymers are melt processable via techniques such as extrusion, injection molding, and compression molding. The semicrystalline poly(aryl ether ketone) containing phthalazinone comonomer units have properties which make them suitable for manufacturing high temperature resistant molded systems and other articles.

Abstract: A waterborne shape memory polymer coating that gives textiles and fibers good shape memory performance. An amphiphilic, crosslinkable grafted polysaccharide polymer was synthesized and provided in a water dispersion that can be applied to a flexible fibrous material and then crosslinked to yield good shape memory properties. The polymer coating showed good binding to human hair, which could be styled into a permanent shape (e.g., straight) during the crosslinked step. Next, this permanent shape can be styled to a temporary shape (e.g. curly) by heating and styling, and cooling. Finally, the permanent style can be regained by activation with water, heat, or both.

Abstract: A polarizing plate protective film containing a compound represented by formula (I); a polarizing plate; and a display: in formula (I), X represents a group of formula (I-A-1) or (I-A-2), L represents a single bond or a divalent linking group, Z represents an n-valent linking group, and n represents an integer of 2 or more; however, when n is 2, the case where L and Z each are simultaneously a single bond is excluded: in formulae (I-A-1) and (I-A-2), RAC1 and RAC2 each independently represent an alkyl, cycloalkyl, aryl, or acyl group; however, the case where RAC1 and RAC2 bond to each other to form a ring is excluded; RAC3 to RAC6 each independently represent a hydrogen atom, or an alkyl, cycloalkyl, aryl, acyl, alkoxy, or alkoxycarbonyl group; and an asterisk (*) represents a bonding hand to form a bonding with L.

Abstract: An adhesive agent comprising a condensation resin having a structural unit obtained by polycondensing a polymerizable monomer containing a monomer (A) having 2 or more carboxyl groups and a monomer (B) having 2 or more amino groups, and meeting at least one of the following (1) and (2), and the following (3): (1) at least one selected from the group consisting of the monomer (A), an anhydride of the monomer (A), and the monomer (B) is liquid at 25° C.; (2) the condensation resin has a polyoxyalkanediyl group; and (3) the condensation resin has a cyclohexane ring.

Abstract: Synthesis of novel and unique PAMAM (poly-amidoamine) polymers. PAMAM polymers can be grown by systematic alternation between ethylenediamine (EDA) and methacrylate. By taking advantage of the alternating terminal ends, successive generations G1 and G0.5 were combined under acidic conditions with Pluronic P123 as a liquid-crystal template. The resulting polymer was imaged with TEM and the product was circular and amorphous of no characteristic size ranging between about 5 nm to about 600 nm, with remarkable electrochemical activity unseen in any of the generations of PAMAM. Applications of this electroactive poly-amidoamine organic polymer include use as a new electron transfer reagent for amperometric biosensors.

Abstract: An adhesive agent comprising a condensation resin having a structural unit obtained by polycondensing a polymerizable monomer containing a monomer (A) having 2 or more carboxyl groups and a monomer (B) having 2 or more amino groups, and meeting at least one of the following (1) and (2): (1) at least one selected from the group consisting of the monomer (A), an anhydride of the monomer (A), and the monomer (B) is liquid at 25° C.; and (2) the condensation resin has a polyoxyalkanediyl group.

Abstract: A shape memory polymer article is disclosed. The article may include a surface having a microstructure and it may include a shape memory polymer. The shape memory polymer may include a copolymer network. The copolymer network may be formed from the reaction product of a free radically polymerizable siloxane having greater than one functional free radically polymerizable group and at least one (meth)acrylate monomer.

Abstract: The invention provides a method for pre-curing an adhesive layer bonding a first component to a second component. The adhesive layer is heated by treating an adhesive layer component as heating the first component with a pair of electrodes that are in electrical contact with a surface of the first component, the pair of electrodes applying a predetermined electrical current (I1, I2) to the first component. The invention further provides an arrangement for pre-curing a layer of adhesive.

Abstract: The invention relates to a process for preparing a salt from diamine and dicarboxylic acid, the process comprising contacting a diamine gas, having a gas temperature T-gas, with a dicarboxylic acid, thereby forming a reaction mixture comprising diamine/dicarboxylic acid salt, wherein the dicarboxylic acid and the reaction mixture are kept at a temperature T-mixture of at least 10° C. below the lowest of the melting temperature of the dicarboxylic acid (Tm-acid) and the melting temperature of the resulting diamine/dicarboxylic acid salt (Tm-salt). The invention also relates to a process for preparing a polyamide comprising preparing a salt from diamine and dicarboxylic acid.

Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.