33 results about "Polytrimethylene terephthalate" patented technology

The purpose of the present invention is to provide: a low-shrinkage fiber; a method for producing the low-shrinkage fiber; an air-blended yarn comprising the polytrimethylene terephthalate fiber; and a fabric comprising the air-blended yarn. The low-shrinkage fiber is substantially composed of polytrimethylene terephthalate, and can be used to produce a precursor for a fabric, which has a soft texture and a low shrinkage rate due to heat. The present invention is characterized in that 90 mol% or more of polytrimethylene terephthalate fibers are composed of trimethylene terephthalate repeating units, the boiling water shrinkage of the polytrimethylene terephthalate fibers is 5% or less, and the elastic modulus of the polytrimethylene terephthalate fibers at an elongation of 20% is 5 cN / dtex or less.

This invention discloses a glass polishing brush, comprising a brush body and bristles distributed on the surface of the brush body. The bristles contain PTT monofilaments. A method for polishing glass using the glass polishing brush is also provided, preferably in combination with a cerium oxide polishing solution. This invention also discloses the use of PTT monofilaments for glass polishing, wherein the diameter of the PTT monofilaments is 4 mil to 30 mil. The glass polishing brush of this invention achieves effective polishing of the glass surface, resulting in a smoother and more even glass surface. Furthermore, compared to other monofilaments, PTT monofilaments do not create numerous deep grooves at the chamfered edges of the glass during the polishing process.

The present invention relates to novel carbodiimides, to a process for their production, and to the use of the novel carbodiimides in ester-based polyols, in polyethylene terephthalate (PET), in polybutylene terephthalate (PBT), in polytrimethylene terephthalate (PTT), in copolyesters, in thermoplastic polyester elastomers (TPE E), in ethylene vinyl acetate (EVA), in polylactic acid (PLA) and / or in PLA derivatives, in polybutylene adipate terephthalate (PBAT), in polybutylene succinate (PBS), in polyhydroxyalkanoates (PHA), in blends, in triglycerides, in thermoplastic polyurethanes, in polyurethane elastomers, in PU adhesives, in PU casting resins, for PU coatings or in PU foams as stabilizers.

The present disclosure relates to a nonwoven including a first layer and a second layer. The first layer has first fibers and a first mean pore size. The first fibers have a first fiber fineness. The second layer includes second fibers and a second mean pore size. The second fibers have a second fiber fineness, and the second fiber fineness is equal to or greater than the first fiber fineness, and the second mean pore size is smaller than the first mean pore size. The first fibers may include a polymer and the polymer may include polytrimethylene terephthalate, polybutylene terephthalate and a combination thereof. The second fiber may include a thermoplastic fiber. The nonwoven may be included in an absorbent article. At least one of the topsheet and the fluid management layer of the absorbent article may include the nonwoven.

A foamed polymer composition includes a matrix polymer component, and from 0.01 wt % to 2 wt %, based on the weight of the polymer composition, of a nanostructured fluoropolymer, a nanostructured fluoropolymer encapsulated by an encapsulating polymer, or a combination thereof. The matrix polymer component includes polybutylene terephthalate (PBT), polyetherimide (PEI), polyethylene terephthalate (PET), polycarbonate (PC), poly(p-phenylene oxide) (PPO), polystyrene (PS), polyphenylene sulfide (PPS), polypropylene (PP), polyamide (PA), polytrimethylene terephthalate (PTT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), copolymers thereof, or a combination thereof. Methods for forming foamed polymer compositions, including core-back molding methods and extrusion foaming methods, are also described.

The invention discloses a plant-based antibacterial and deodorant polyester-nylon composite fiber and a preparation process thereof. The fiber has a skin-core-island three-phase structure, wherein a core layer contains a blend of 65-75% by mass of regenerated polyester and 25-35% by mass of polyamide 56, and plant-derived composite antibacterial and deodorant microcapsules with beta-cyclodextrin / melamine resin as a double-layer wall material are uniformly dispersed in the core layer; the skin layer takes bio-based polytrimethylene terephthalate as a matrix and contains 1-3wt% of a nanoscale zinc oxide-chitosan composite antibacterial agent; mint-wormwood-tea polyphenol ternary solidified fibers with root diameters are uniformly distributed in the island phase along the axial direction of the fiber. The preparation process comprises the following steps: mixing the plant-based antibacterial agent and polyester chips according to a ratio of (2-5%): (95-98%), and carrying out melt pelletizing to prepare polyester master batches; mixing the master batch with polyester chips, adding 0.1-0.3% of a stabilizer and a dispersant, blending and granulating, and drying with chinlon chips at 90-120 DEG C for 16-24 hours; and after the two raw materials are melted, co-extrusion drafting is carried out through a three-channel spinning assembly at 250-290 DEG C and 3-6 MPa.

The present invention relates to the field of recycling materials containing polyester terephthalate, particularly polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or polytrimethylene terephthalate (PTT), commonly used in the manufacture of disposable plastic bottles, food trays, textiles, and composite insulation materials. It specifically concerns a process for recycling PET into terephthalic diester, and in particular dimethyl terephthalate (DMT), in less than one hour and without any pretreatment steps. Furthermore, this process uses products with a low environmental impact. It is therefore particularly advantageous from an industrial perspective.

The present invention relates to the field of the recycling of materials comprising terephthalate polyester, notably polyethylene terephthalate (PET) or polybutylene terephthalate (PBT) or polytrimethylene terephthalate (PTT), which are commonly used for the manufacture of disposable plastic bottles, food trays, textiles, composite material for insulation, etc. The invention notably relates to a method for recycling PET to a terephthalic diester and notably to dimethyl terephthalate (DMT) in less than one hour and without a pretreatment step. In addition, this method uses products with low environmental impact. It is therefore particularly advantageous from an industrial viewpoint.

The invention discloses a long-acting anti-precipitation flame-retardant reinforced nylon composite material and a preparation method thereof. The long-acting anti-precipitation flame-retardant reinforced nylon composite material comprises 35-65 parts of nylon 66; 15 to 35 parts of glass fiber; 5 to 15 parts of polytrimethylene terephthalate; 5-15 parts of phenolic resin; 2-10 parts of a flame retardant; 5 to 15 parts of triethoxysilane; 0.1 to 1 part of a toughening agent; 1-7 parts of a coupling agent; 0.01 to 5 parts of an antioxidant; and 0.01-5 parts of a lubricant. According to the long-acting anti-precipitation flame-retardant reinforced nylon composite material provided by the invention, the polytrimethylene terephthalate and the phenolic resin are added into the PA66, so that the water absorption of a nylon matrix is reduced; and hydrolytic migration of the flame retardant is hindered, so that the material has excellent precipitation resistance, the mechanical property is greatly improved, the service life of the product is prolonged, and the cost is reduced.

The application discloses a kind of high wear-resistant green composite functional fibers and its textile fabric.The composite functional fiber is core-shell structure fiber, including core layer component and shell layer component by weight parts, the core layer component includes polytrimethylene terephthalate, polyamide 56, cellulose nanocrystal and maleic anhydride grafting compatilizer, the shell layer component includes bio-based thermoplastic polyurethane and wax-based lubricating microcapsule, and the sum of weight parts of core layer component and shell layer component is 100 parts.By adopting coaxial core-shell composite melt spinning process, and the component allocation and spinning, drafting and heat setting condition are controlled, and composite functional fiber with stable structure is prepared.The fiber disclosed in the application keeps good processing adaptability, and realizes the effect of giving consideration to durable performance and environmental friendly performance.

The invention relates to a high-elasticity fabric and a preparation method thereof, and belongs to the technical field of fabric manufacturing. The high-elasticity fabric comprises composite fibers interwoven into the high-elasticity fabric, and each composite fiber comprises a core fiber, a reinforcing layer wrapping the outer surface of the core fiber and a comfortable outer layer wrapping the outer surface of the reinforcing layer; the core fiber, the reinforcing layer and the comfortable outer layer are respectively prepared into the composite fiber by a first spinning material, a second spinning material and a third spinning material through a coaxial electrostatic spinning process; a first spinning material for forming the core fiber comprises a mixture of PTT (polytrimethylene terephthalate) and graphene; a second spinning material for forming the reinforcing layer comprises a mixture of bio-based PET and nano silicon dioxide; a third spinning material for forming the comfortable outer layer comprises a mixture of copolymerization modified PET and nano ATO. In the fabric, the core fiber provides excellent elasticity; the reinforcing layer provides structural strength and durability; and the comfortable outer layer provides a skin-friendly touch sense and an intelligent heat and humidity management function.

The present invention includes fabrics and yarns comprising a two-component polyester multifilament yarn. The two-component polyester yarn is made from polyethylene terephthalate and polytrimethylene terephthalate in a parallel or eccentric sheath core configuration. Compared to conventional two-component polyester yarns, this yarn has improved bulk and provides a more desirable feel in fabrics.

A kind of ground filament of co-extrusion monofilament with skin-core structure, wherein the core layer includes polybutylene terephthalate PBT and optional additives, the skin layer includes polytrimethylene terephthalate PTT or polybutylene terephthalate PBT and optional additives, at least one end of the co-extrusion monofilament with skin-core structure is chemically treated to be ground, characterized in that wherein the ground filament includes tip region, middle region and rear end region in turn from its tip, wherein the tip region, middle region and rear end region are rough surfaces with different roughness levels;And, tip region length is ≥4mm, middle region length is 4-50mm.

The invention belongs to the technical field of three-dimensional crimped fibers, and relates to a preparation method of furyl bi-component parallel composite elastic fibers, which comprises the following steps: respectively melting raw materials of a component A and raw materials of a component B, and then carrying out parallel composite spinning to obtain the furyl bi-component parallel composite elastic fibers, the component A comprises the following raw materials: furyl polyester, a nucleating agent and polytrimethylene terephthalate; the raw material of the component B comprises polytrimethylene terephthalate; the proportion of the polytrimethylene terephthalate in the component A is lower than 15wt%; or the component A comprises the following raw materials: furyl polyester, a nucleating agent and polybutylene terephthalate; the raw material of the component B comprises polybutylene terephthalate; the proportion of the polybutylene terephthalate in the component A is lower than 15wt%. According to the method disclosed by the invention, PTT or PBT is added into furyl polyester, so that the crimp performance of the fiber is improved.

The application relates to the technical field of layered composite fabrics, and discloses an anti-low-temperature wear-resistant bio-based composite fabric and a preparation method thereof. The preparation method comprises the following steps: spinning bio-based polytrimethylene terephthalate fibers and modified wool fibers to obtain a single-layer blended fabric, impregnating the single-layer blended fabric with a finishing liquid, obtaining an outer layer / inner layer composite fabric after compounding, and coating a polyurethane-based coating material to obtain the anti-low-temperature wear-resistant bio-based composite fabric. The composite fabric has good low-temperature-resistant and warm-keeping performance and good wear resistance.

A sharpened filament coated with silicone oil on the surface and having a skin layer-core layer structure wherein the core layer comprises polybutylene terephthalate (PBT) and an optional additive, the skin layer comprises polytrimethylene terephthalate (PTT) and an optional additive, and at least one end of the filament is sharpened by chemical treatment; the co-extrusion sharpened monofilament with the skin layer-core layer structure is characterized in that the ratio of the skin layer thickness to the monofilament diameter of the co-extrusion sharpened monofilament with the skin layer-core layer structure is 3-20%, preferably 5-15%.

The application discloses a method for recycling polyester by amine decomposition under rare earth catalyst, comprising: under the catalysis of a rare earth catalyst, waste polyester and imidazole salt substances are subjected to amine decomposition reaction to obtain a crude product; the waste polyester comprises at least one of polyethylene terephthalate, polytrimethylene terephthalate, polyethylene isophthalate, polytrimethylene isophthalate, polyethylene succinate, polyethylene adipate, polyethylene suberate and polyethylene sebacate; the crude product is hydrolyzed in an alkali solution, extracted, and the organic phase is taken to obtain hydroxyethyl imidazole salt substances and / or hydroxypropyl imidazole salt substances; the water phase is acidified and precipitated, and solid-liquid separation is performed to obtain organic diacid. The application can utilize a large amount of recycled polyester materials, one-pot method is used to recycle dibasic carboxylic acid and imidazole salt value-added chemicals, and the recycled dibasic carboxylic acid and imidazole salt value-added chemicals can be applied to the polyester industry again.

The application provides a process method for chemically recycling 1,3-propanediol and co-producing aromatic chemicals, which uses polytrimethylene terephthalate (PTT) waste or particles (or leftover materials and the like) and ammonia water as raw materials, and obtains 1,3-propanediol, terephthalamide, terephthalic acid, terephthalonitrile and terephthalonitrile through unit operation steps such as ammonolysis depolymerization, acidification, extraction, reduced pressure distillation, catalytic dehydration and catalytic hydrogenation. The technical process realizes the resource utilization of waste polyester plastics, and co-produces aromatic amides and nitrile high-value chemicals.

The invention discloses a production method of a high-composite-strength BOPA film. The BOPA film comprises a surface layer, a middle layer and an inner layer, and the surface layer is composed of PA6, melamine cyanurate, magnesium silicate, polytrimethylene terephthalate, POE-g-MAH and an antioxidant; the middle layer is composed of PA10 and PA12, multi-walled carbon nanotubes, pentadecyl phenol and surface modified cuprous oxide; the inner layer is prepared from PA6, glass fibers, phenolic resin, hollow glass beads, halloysite, an antioxidant and silicone. The BOPA film disclosed by the invention has relatively good composite strength.

The invention relates to the technical field of macromolecules, in particular to modified polytrimethylene terephthalate and a preparation method thereof. The modified polytrimethylene terephthalate comprises amination modified ZIF-8 and a polymer with a structure as shown in a formula I-1, wherein the amination modified ZIF-8 is prepared by using zinc nitrate hexahydrate, 2-aminobenzimidazole, 2-methylimidazole and sodium formate as raw materials.

The present application relates to the technical field of elastic fiber, in particular to an easy-to-dye composite elastic fiber and a preparation method thereof. The composite elastic fiber is prepared by melt spinning of thermoplastic polyester chips and modified PBT chips. The thermoplastic polyester chips comprise the following raw materials in parts by weight: polytrimethylene terephthalate 65-80 parts, polyamide copolymer 10-25 parts, compatibilizer 2-8 parts, lubricant 0.5-3 parts, and antioxidant 0.1-1 part. The modified PBT chips have good mechanical properties, high heat resistance, easy dyeing and easy processing, by introducing 1,4-cyclohexane dimethanol and sulfonic acid groups into the PBT molecular chain. The easy-to-dye composite elastic fiber prepared by the compounding of modified PBT and thermoplastic polyester for spinning processing has the characteristics of high comprehensive mechanical properties, good heat resistance and excellent dyeing performance.

The invention provides an ecological texture comfortable type multifunctional elastic composite yarn and a manufacturing method thereof, the ecological texture comfortable type multifunctional elastic composite yarn comprises a core layer, the core layer is an elastic core yarn formed by blending low-viscosity PET and high-shrinkage PET according to the mass ratio of (5-7): (3-5), the intrinsic viscosity of the low-viscosity PET at 25 DEG C is 0.47-0.65 dL / g, and the boiling water shrinkage rate of the high-shrinkage PET is larger than or equal to 20%; the outer side of the core layer is coated with the middle layer, and the middle layer is formed by blending modified bio-based polytrimethylene terephthalate fibers and regenerated polyester fibers according to the mass ratio of (3-5): (5-7); the outer layer wraps the outer side of the middle layer, and the outer layer is formed by blending modified China hemp fibers and lyocell fibers according to the mass ratio of (2-4): (6-8); the synergistic improvement of spandex replacement, ecological environmental protection, comfortable texture and multi-function integration is achieved, meanwhile, the production process is optimized, and energy consumption and pollutant emission are reduced.

The invention discloses an anti-wrinkle yarn and a preparation method thereof, an anti-wrinkle fabric and clothes. The anti-wrinkle yarn comprises a core yarn and a wrap yarn, the wrap yarn wraps the core yarn, the core yarn is a first single-component yarn prepared from one of polytrimethylene terephthalate and polybutylene terephthalate, and the wrap yarn is a second single-component yarn prepared from one of polytrimethylene terephthalate and polybutylene terephthalate. The first bi-component yarn is prepared from one of polytrimethylene terephthalate and polybutylene terephthalate or one of polytrimethylene terephthalate and polybutylene terephthalate and polyethylene terephthalate; the wrap yarn is a second single-component yarn prepared from polyethylene terephthalate, or a second double-component yarn prepared from one of polytrimethylene terephthalate and polybutylene terephthalate and polyethylene terephthalate. The yarn, the fabric and the clothes can keep a good anti-wrinkle effect within a long time.

The present application relates to the field of knitted fabric, and provides a low-elasticity tightness and shuttle feeling weft knitting twill fabric and a preparation method thereof, the fabric comprises an outer layer and an inner layer, the outer layer yarn is a staple fiber yarn; the inner layer yarn is obtained by blending polyester elastic filament and polyurethane filament, the polyester elastic filament contains polybutylene terephthalate and / or polytrimethylene terephthalate; the knitting pattern of the fabric is six paths as a cycle, the knitting pattern is as follows: the first path is A needle float, B needle float and C needle tuck; the second, fourth and sixth paths are A needle, B needle and C needle full loop; the third path is A needle float, B needle tuck and C needle float; the fifth path is A needle tuck, B needle float and C needle float. The low-elasticity tightness and shuttle feeling weft knitting twill fabric has multiple advantages of low elasticity, good washing resistance, excellent shape retention, high tightness, shuttle feeling and clear twill appearance.

The invention relates to the technical field of textile, and provides a preparation process of soft knitted fabric, which comprises the following steps: drying cellulose acetate slices, polytrimethylene terephthalate slices and TPEE elastomer, putting into a twin-screw blending spinning machine, carrying out melt blending spinning at 210-230 DEG C, spinning into filaments through a special-shaped spinneret plate, and drying to obtain the soft knitted fabric. After cooling, modifying with a flexible biomimetic mineralization liquid, oiling and winding to obtain soft composite fibers; weaving the prepared soft composite fibers to obtain knitted grey cloth, placing the knitted grey cloth in low-temperature plasma treatment equipment for surface activation treatment, then immersing the knitted grey cloth in biological enzyme finishing liquid for treatment, and after treatment, performing hot water inactivation and cleaning; and after finishing, drying to obtain the soft skin-friendly knitted fabric. According to the invention, the problems of easy strength damage, fuzzing and pilling and low softness retention rate of the fabric in the traditional process are solved, and the mechanical strength and durability of the fabric are improved.

The invention belongs to the technical field of polyester recovery, and relates to a PET / PTT blended fabric depolymerization recovery method, a basic catalyst and dimethyl carbonate are adopted, and the basic catalyst is composed of a strong basic catalyst and a weak basic catalyst in a mass ratio of 2: 8-8: 2; the strong alkaline catalyst is one or more of sodium hydroxide, potassium hydroxide, potassium carbonate, sodium carbonate, sodium methoxide, potassium methoxide, sodium ethoxide and potassium ethoxide, and the weak alkaline catalyst is one or more of potassium bicarbonate, sodium bicarbonate and sodium dihydrogen phosphate; the depolymerization recovery method disclosed by the invention is good in separation effect, the separation difficulty and the product loss are reduced, and the product purity is high.

The application relates to the polyester preparation technical field, and particularly discloses a stretchable cotton-imitating hemp polyester fiber and a preparation method thereof. The stretchable cotton-imitating hemp polyester fiber comprises core yarn and a winding layer spirally wound outside the core yarn, the core yarn is a skin-core composite structure, and the skin layer is composed of the following components in parts by weight: 45-55 parts of thermoplastic polyester elastomer, 25-35 parts of polytrimethylene terephthalate, and 5-8 parts of epoxy-based dynamic vulcanization elastomer; and the core layer is composed of the following components in parts by weight: 8-12 parts of copolymerized polyphenylene sulfide. The application adopts the skin-core composite structure, the thermoplastic polyester elastomer and the polytrimethylene terephthalate in the skin layer form a continuous elastic matrix under the compatibilization of the epoxy-based dynamic vulcanization elastomer, the polytetrafluoroethylene micro powder in the core layer forms a nanofiber network, and the copolymerized polyphenylene sulfide dispersed phase is in the form of axially oriented fibers, so that the elastic recovery retention rate of the fiber after multiple stretching cycles is improved.

The invention relates to the technical field of layered composite fabrics, and discloses a low-temperature-resistant wear-resistant bio-based composite fabric and a preparation method thereof. The preparation method comprises the steps that bio-based polytrimethylene terephthalate fibers and modified wool fibers are blended and then woven, a single-layer blended fabric is obtained, an outer-layer / inner-layer composite fabric is obtained after finishing liquid dipping treatment and compounding, then the outer-layer / inner-layer composite fabric is coated with a polyurethane-based coating material, and the low-temperature-resistant and wear-resistant bio-based composite fabric is obtained. The composite fabric is good in low-temperature resistance, thermal insulation performance and wear resistance.

The invention discloses a high-shrinkage two-component elastic fiber as well as a preparation method and application thereof. The high-shrinkage two-component elastic fiber is prepared from a modified PET (Polyethylene Terephthalate) and PTT (Polytrimethylene Terephthalate) composite material. The PET is modified, the crystallinity of the PET is reduced, the toughness of the PET is improved, and the PET and the PTT composite material are mixed according to a ratio and are subjected to spinning, so that the prepared fiber has high contractibility and excellent elasticity, is good in component compatibility and stable in process, and is suitable for the field of fiber spinning.

The invention discloses a wool / regenerated cellulose / bio-based polyester blended fabric and a production process thereof, and belongs to the technical field of textiles, the fabric comprises wool fibers, regenerated cellulose fibers and bio-based polyester fibers; the bio-based polyester fibers are polytrimethylene terephthalate fibers or polyethylene glycol terephthalate fibers synthesized from biomass raw materials. According to the invention, the bio-based polyester fiber is used for partially replacing traditional petroleum-based polyester and is matched with the regenerated cellulose fiber for use, so that cyclic utilization of resources is realized; one-bath dyeing of the wool and the regenerated cellulose fibers is realized by compounding dye liquor and an accurate pH buffer system, the technological process is shortened, and the energy consumption is reduced; the composite bio-enzyme is adopted for finishing, so that the wool and the regenerated cellulose fibers can be acted at the same time, the softness, the smoothness and the anti-pilling property of the fabric are synergistically and remarkably improved, and the wearing comfort is improved.