1650 results about "Repeat unit" patented technology

A coating composition comprises: a fluoro-aliphatic group-containing copolymer comprising a repeating unit A corresponding to a fluoro-aliphatic group-containing monomer, and a repeating unit B corresponding to at least one monomer, wherein each of the I / O values of said at least one monomer constituting the repeating unit B is 1.0 or less.

The invention belongs to the field of biological materials, and particularly relates to recombinant V-type humanized collagen and application thereof. The invention provides a recombinant V-type humanized collagen, the amino acid sequence of the recombinant V-type humanized collagen comprises (repetitive unit) n, and the repetitive unit comprises a sequence as shown in SEQ ID NO.1; each repeating unit is directly linked and the number n of repeating units is 10. The recombinant V-type humanized collagen can comprehensively resist skin aging.

The invention relates to a modeling method in the field of molecular dynamics, in particular to an automatic polymer full-atom molecular dynamics modeling method, and the polymer modeling process is divided into three core steps: firstly, converting SMILES of a repetitive unit into SMILES of a polymer; secondly, constructing a single-chain structure; and finally, constructing a multi-chain amorphous system. The link of cross-linking reaction needs to be additionally added to the cross-linked polymer. According to the invention, through the built-in DREIDING force field parameters, an input file required by the Lammps molecular dynamics can be directly operated and generated.

The embodiment of the invention provides a polymer binder, a preparation method thereof and an all-solid-state sulfide lithium battery. The polymer binder is a modified polyvinylidene fluoride-trifluorochlor oethylene copolymer, and chlorine in the modified polyvinylidene fluoride-trifluorochlor oethylene copolymer is partially or completely substituted by bromine and / or iodine; in the modified polyvinylidene fluoride-trifluorochlor oethylene copolymer, the molar ratio of a corresponding repeating unit of polyvinylidene fluoride to a corresponding repeating unit of trifluorochlor oethylene is (1-9): (9-1); in the modified polyvinylidene fluoride-trifluorochlor oethylene copolymer, the weight of chlorine is a, the weight of bromine and / or iodine is b, and b / (a + b) * 100% is equal to 1%-100%. The technical effect of improving the cycling stability and safety of the battery is achieved, and then the technical problems that when a traditional binder is applied to the all-solid-state sulfide lithium battery, the interface is unstable, the binding power is insufficient, and the traditional binder reacts with electrolyte are solved.

The present embodiment relates to a biodegradable resin composition, a biodegradable film using the same, and a method for preparing the same, wherein the biodegradable resin composition comprises: a polylactic acid (PLA) resin; and a polyhydroxyalkanoate (PHA) resin. The PHA resin includes: a first PHA resin including a 3-hydroxyhexanoate (3HH) repeating unit; and a second PHA resin comprising a 4-hydroxybutyrate (4HB) repeating unit, thereby simultaneously improving the biodegradability, stretchability, and strength of the biodegradable film. Therefore, the biodegradable resin composition according to an embodiment of the present invention has excellent biodegradability and biocompatibility, and thus is environmentally friendly, and can ensure sufficient stretchability and strength thereof to produce a stretchable film, thereby being used for producing various products requiring moldability, and also being suitable for the production of various products requiring moldability. The present invention relates to a packaging material, such as a packaging material for disposable bags or food containers, and exhibits excellent properties.

The invention belongs to the technical field of copolymerization modification of degradable polyester, and relates to a depolymerization method and application of polybutylene terephthalate. During depolymerization, polybutylene terephthalate, dimethyl carbonate and dihydric alcohol are mixed and then subjected to a depolymerization reaction, and an intermediate ester is prepared; the dihydric alcohol is dihydric alcohol which does not form a ring with dimethyl carbonate in the depolymerization reaction process; the molar weight of the dimethyl carbonate is 10-30% of the molar weight of a repetitive unit of the polybutylene terephthalate; the sum of the molar weight of a 1, 4-butanediol unit in the polybutylene terephthalate and the molar weight of the added dihydric alcohol is a, the sum of the molar weight of a terephthalic acid unit in the polybutylene terephthalate and the molar weight of the added dimethyl carbonate is b, and the ratio of b to a is (1.2-1.5): 1; during application, the prepared intermediate ester is subjected to transesterification under the condition of negative pressure to obtain the copolyester. The depolymerization method is simple and easy to implement; the depolymerization product can be directly applied.

The invention is directed to a biodegradable, thermoplastic multiblock copolymer, to a process for preparing a biodegradable, thermoplastic multiblock copolymer, to the use of a biodegradable thermoplastic multiblock copolymer, to a composition for the delivery of at least one pharmacologically active compound to a host, and a medical device comprising a biodegradable, thermoplastic multiblock copolymer. The biodegradable, thermoplastic multiblock copolymers of the invention comprise at least one prepolymer (A) segment and at least one hydrolysable amorphous prepolymer (B) segment, wherein the segments are linked by a multifunctional chain extender, wherein the at least one prepolymer (A) segment comprises: a) one or more hydrolysable linkages, b) a water-soluble polyoxazoline-based polymer, and c) reaction products of one or more cyclic monomers and / or one or more non-cyclic monomers, wherein the water-soluble polyoxazoline-based polymer is a polymer containing a repeating unit of structure −[N(COR1)CH2CH2]n− where R1 is independently selected for each repeating unit from an alkyl group and n is 3-100, and wherein the multiblock copolymer is amorphous.

The present invention is a resist composition containing a hypervalent iodine compound, a carboxy-group-containing polymer, and a solvent, where the carboxy-group-containing polymer includes a repeating unit of a carboxylic acid derivative, represented by the following formula (1), and the polymer has a dispersity Mw / Mn of 1.30 or less, where Mw is a weight-average molecular weight and Mn is a number-average molecular weight measured by gel permeation chromatography. This can provide: a non-chemically amplified resist composition excellent in sensitivity and limiting resolution in photolithography using a high-energy beam; a laminate including the resist composition; a patterning process using the resist composition; and a method for manufacturing the resist composition.

The invention relates to a composite solid electrolyte and a preparation method thereof, the composite solid electrolyte comprises: a lithium zirconium phosphate (LZP) oligomer: a chain nanocluster with a polymerization degree of 5-10, the surface of which is modified by trimethyl phosphate (TMP) to form a phosphate group; a polymer matrix, namely PVDF-HFP; the lithium salt is lithium bis (trifluoromethanesulfonimide) LiFSI or LiDFOB, and the molar ratio of the lithium salt to the polymer repeating unit is (1: 8)-(1: 12); wherein the LZP oligomer and a-CF2 group of the PVDF-HFP form a hydrogen bond through a phosphate group of the TMP, and the LZP oligomer and the-CF2 group of the PVDF-HFP interact with each other through a dipole, so that molecular-level interface bonding is realized; the LZP oligomer constructs a continuous three-dimensional ion channel in the electrolyte, and the dielectric constant is 60-80; the electrolyte forms a film at 60 DEG C or below by a solution casting method.

To provide a non-fluorinated dispersant capable of achieving dispersibility equivalent to that of a fluorinated dispersant in a dispersion containing dispersed fluorinated resin particles.SOLUTION: There is provided a dispersant for fluorinated resin particles for dispersing fluorinated resin particles in a liquid, the dispersant comprising: (1) a non-fluorinated copolymer containing, as repeating units, (a) a Si-O-bond-containing monomer having one polymerizable functional group in a single molecule, the polymerizable functional group being a (meth)acryloyl group, and (b) a (meth)acryloyl-group-containing monomer having one polymerizable functional group in a single molecule, the polymerizable functional group being a (meth)acryloyl group, except that the Si-O-bond-containing monomer is excluded; and (2) an organic solvent.SELECTED DRAWING: None

An anode and a lithium secondary battery comprising same are presented, the anode comprising: an anode current collector; and a protective layer disposed on the anode current collector and including a cross-linked polymer including a repeating unit derived from two or more types of multi-functional cross-linking agents, wherein the cross-linked polymer has a cross-linking density (g / n) of 300 or less.

A chemically amplified negative resist composition containing (A) a base polymer containing a polymer which contains a repeat unit having formula (A1) and a repeat unit having formula (A2), the polymer being adapted to decrease its solubility in an aqueous alkaline solution under an action of an acid.

Provided is a resin comprising a polycarbonate structural unit represented by formula (UN1) and a terminal structure having a vinyl group (with the proviso that any polycarbonate structural unit represented by formula (A1) and any terminal structure represented by formula (A2) are excluded). [In formula (UN1), Ux is a single bond or a divalent group, R1 and R2 are each independently a substituent, n is 0, 1, 2, 3, or 4, m is 0, 1, 2, 3, or 4, and * indicates a linking bond. Symbol * in formula (A1) indicates a linking bond and symbol * in formula (A2) indicates a linking bond to the repeating unit located at an end of the resin.]

An additively manufactured lattice includes a plurality of symmetrically oriented repeating unit cells. Each of the unit cells is comprised of a vertically oriented tubular structure having a top edge and bottom edge, said tubular structure defined by a circumferential side wall extending from said top edge to said bottom edge. The side wall has a lower portion, an intermediate portion, and an upper portion, with the lower portion terminating at the bottom edge, the upper portion terminating at the top edge, and the intermediate portion positioned between the lower portion and the upper portion. A plurality of spaced legs is included with each unit cell, with each leg formed as an outfolding of the side wall, each outfolding beginning at the side wall intermediate portion and extending progressively further outward through the side wall lower portion to the bottom edge.

To provide a chemically amplified negative resist composition having improved resolution in pattern formation and giving a resist pattern with good LER and pattern fidelity, and to provide a method for forming a resist pattern.SOLUTION: (A) a photoacid generator comprising an anion having the formula (A1) and a cation having a specific structure, and (B) a base polymer comprising a recurring unit having a specific structure with a phenolic hydroxyl group on a side chain.SELECTED DRAWING: None

This nonspecific reaction inhibitor is a copolymer containing a first repeating unit represented by formula (1) and a second repeating unit represented by formula (2). In formula (1), R1, R2, and R3 are each independently a hydrogen atom or a methyl group, X is NH or an oxygen atom, Y is SO3 - or COO-, and Yn and m are each independently an integer from 1 to 5. In formula (2), R4 is a hydrogen atom or a methyl group, Z is NH or an oxygen atom, and A is a linear or branched alkyl group with 12 to 40 carbon atoms.

A liquid crystal composition contains a side chain type polymer liquid crystalline compound which can form a light absorption anisotropic film having a high alignment degree and has excellent solubility in a general-purpose solvent, a light absorption anisotropic film obtained using the composition, a laminate, and an image display device. The composition includes: a side chain type polymer liquid crystalline compound; and a dichroic substance, in which the compound is a copolymer having a repeating unit (1) containing a mesogenic group with a molecular weight of greater than 280 and a repeating unit (2) with a molecular weight of 280 or less, a content of the repeating unit (2) is less than 14% by mass with respect to a total mass of the compound, and a content of the dichroic substance is greater than 2% by mass with respect to a total solid content of the composition.

To provide a chemically amplified positive resist composition that can give a resist film which has extremely high isolated space resolution, small LER, excellent rectangularity, and on which formation of a resist pattern with suppressed etching resistance or pattern collapse is possible, and a resist pattern forming method using the chemically amplified positive resist composition.SOLUTION: A chemically amplified positive resist composition contains: (A) a base polymer which includes a repeating unit derived from hydroxystyrene or hydroxynaphthalene and a repeating unit derived from hydroxystyrene in which a hydroxy group is protected by acid-labile group or hydroxynaphthalene in which a hydroxy group is protected by acid-labile group, and in which dissolubility to alkali aqueous solution increases by acid action, and a dispersion degree is 1.0 to 1.19; (B) photo-acid generator expressed by the following formula (B); and (C) organic solvent.SELECTED DRAWING: None

Composite anion exchange membranes are described. The composite anion exchange membranes comprise an anion exchange polymer containing a hydrogen recombination catalyst dispersed in the anion exchange polymer. The anion exchange membrane may also include a radical scavenger. The anion exchange polymer comprises a plurality of repeating units of formula (I)Catalyst coated membranes and membrane electrode assemblies made using the composite anion exchange membranes are also described.

(Meth)acrylate-functionalized oligomers having a) an oligomeric backbone comprised of first segments and second segments and b) (meth)acrylate-functionalized end groups are provided. Such oligomers are useful as components of curable compositions. The first segments, second segments and (meth)acrylate-functionalized end groups are linked together by linking moieties derived from a polyisocyanate. The first segments are residues of a first segment precursor containing a plurality of repeating units and a plurality of isocyanate-reactive functional groups and having a number average molecular weight of at least 250 daltons. The second segments are residues of a second segment precursor, different from the first segment precursor, containing a plurality of repeating units and a plurality of isocyanate-reactive functional groups and having a number average molecular weight of at least 250 daltons. The first segment and the second segment exhibit a Hansen Solubility Parameter Distance Relative Energy Difference of at least about 4 and not more than about 9.

A sorbent for direct air capture of CO2 includes a porous amine-functionalized polymeric material including a backbone and a plurality of side chains having amine groups branching from the backbone, the backbone including a rigid crosslinker having crosslinker groups, a ratio of the crosslinker groups to a total number of monomer repeating units in the polymeric material is about 0.1 to 0.4 such that the polymeric material's internal surface area is about 10 to 500 m2 / g.

The embodiment of the invention provides a memory which at least comprises a first memory area, a peripheral circuit area and a second memory area which are arranged in the first direction, the peripheral circuit area is located between the first memory area and the second memory area, the first memory area is provided with a plurality of repetitive units in the second direction, and the repetitive units are arranged in the second direction. Each repeating unit is composed of at least two storage banks arranged in the first direction; wherein the first direction is perpendicular to the second direction.

The invention relates to a copolyamide elastomer with a nitrogen-containing side group and a preparation method and application thereof, the copolyamide elastomer comprises a copolymer with a hard segment and a soft segment, and the soft segment is a polyether soft segment and / or a polyester soft segment; the hard segment comprises repetitive units as shown in a formula (1) and a formula (2), and a nitrogen-containing side group R3 is substituted or unsubstituted amino. The copolyamide elastomer disclosed by the invention is low in melting point and easy to form and process, has the characteristic of photoluminescence, can convert part of ultraviolet light into blue light, and has relatively high transmittance to visible light.

The invention relates to the technical field of biology, and particularly discloses polypeptide, recombinant XIX type humanized collagen and application of the recombinant XIX type humanized collagen. The amino acid sequence of the polypeptide comprises n repetitive units; the repetitive unit comprises any one of the following amino acid sequences or variant sequences thereof: (1) an amino acid sequence as shown in any one of SEQ ID NO.1-2; (2) an amino acid sequence having at least 50%, 60%, 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98% or 99% sequence identity with the amino acid sequence as shown in any one of SEQ ID NO.1-2; (3) a variant sequence obtained by performing mutation of one or more amino acid residues on the amino acid sequence as shown in any one of SEQ ID NO.1-2; wherein n is an integer greater than or equal to 1. The polypeptide provided by the invention has a collagen triple helix structure, has good cell adhesion activity, can carry out functions of human collagen, is free of immunological rejection and anaphylactic reaction, and can be used in various fields of cartilage repair, biological dressing, tissue filling and the like.

A copolymer, methods of making the polymer, methods of recycling the polymer and compositions including the polymer are described. The copolymer, can contain repeating units of Formula (I), and repeating units of Formula (11), where X is an aliphatic group for each of Formulas (I) and (II); Z is a first polyolefin group containing at least 45 carbon atoms, preferably 45 to 1,000 carbon atoms, and has a degree of saturation 98 to 100%; Z′ is an aliphatic group; the structure of Z is different than Z′, and wherein Formula (I) or Formula (11), or both, comprise 0.01 to 40 ester groups per 1,000 backbone carbon atoms.

Provided is a water repellent composition comprising (A) a polymer and (B) a silicone compound, wherein the polymer (A) contains a repeating unit derived from a hydrocarbon group-containing monomer (a) having a hydrocarbon group having 2-40 carbon atoms; the silicone compound (B) is composed of a non-resin-based silicone and a resin-based silicone; in a GPC chart of the silicone compound (B), there is a peak top in a region in which the molecular weight is 1500 or more; a component having a molecular weight of 1500 or more in the silicone compound contains the non-resin-based silicone excluding amino-modified silicones; and the amount of the silicone compound (B) is 1%-49% by weight with respect to the total amount of the amount of the polymer (A) and the amount of the silicone compound (B). The water repellent composition according to the present disclosure can provide a water repellent composition that can impart good water repellency and good chalk mark properties to a base (in particular, a fiber product).

The invention relates to fluorine-free polyimide containing hydrophobic groups and a preparation method thereof, and belongs to the field of novel high-performance polyimide materials. The fluorine-free polyimide containing the hydrophobic group has a repeating unit structure shown in a general formula (I) and is obtained by polymerizing a fluorine-free diamine monomer containing the hydrophobic group and having a structure shown in a general formula (II) with specific diamine and dianhydride monomers. The fluorine-free polyimide containing the hydrophobic group has relatively low water absorption rate, has a low dielectric constant and a low loss factor at high frequency, has excellent solubility and thermal stability, can meet the performance requirements of a high-frequency and high-speed circuit on a substrate material, and has a wide application prospect. The material can be used as an excellent fluoride-free insulating base material in the fields of super-large-scale integrated circuits, photosensitive polyamideimide and the like.

This invention provides an ion-conducting polymer binder for battery electrodes that possesses excellent mechanical properties and ion conductivity. [Solution] The present invention provides a repeating unit of m according to formula (I), and a repeating unit of n according to formula (II), TIFF2026057506000023.tif31170 TIFF2026057506000024.tif58170 Regarding an ion-conducting polymer binder for a positive electrode containing (CH2), R1 is (CH2) x -R3, x is 1-20, and R3 is H or CN; R2 and R5 are alkyl or alkenyl; M is alkali metal, etc.; m / n ratio is 25:1-1:25; m+n is q, q is 50-5000.

A flame retardant group-containing polymer, a separator of a non-aqueous electrolyte battery comprising the flame retardant group-containing polymer, and a non-aqueous electrolyte battery. The flame retardant group-containing polymer includes a first repeating unit, a second repeating unit, and a third repeating unit.

This application discloses a crown ether modified perfluorosulfonic acid resin, its preparation method, its application, and an ion exchange membrane. The main chain of the crown ether modified perfluorosulfonic acid resin is a perfluorocarbon chain. The crown ether modified perfluorosulfonic acid resin includes repeating unit A, which is shown in formula (1): Formula (1); In formula (1), R0 is a crown ether group, a is a positive integer from 0 to 6, and b is a positive integer from 2 to 5. This application can effectively improve the persistence of the ion exchange membrane's free radical quenching effect, while also improving the oxygen resistance of the ion exchange membrane.