Reinforcing sheet design and reinforcing method for fiber composite material opening workpiece

The invention discloses a reinforcing sheet design and a reinforcing method for a fiber composite material opening workpiece. A matched reinforcing sheet is designed in accordance with the shape and the size of the opening portion of the workpiece. The fiber trajectory of the reinforcing sheet consists of a radial trajectory layer and an annular fiber trajectory layer, presoaked or unsoaked fiber bundles are used for preparing the reinforcing sheet in accordance with the designed fiber trajectory, the reinforcing sheet is laid on the reinforcing portion of an opening, the reinforcing sheet is cured to the opening portion through an integral curing process or a secondary curing process, and the opening reinforcement of the fiber composite material opening workpiece is achieved. The reinforcing sheet has the advantages of being simple in design, good in reinforcing effect, free from cutting, suitable to mass production and wide in application prospects.

Local reinforcement method for fiber composite material workpiece

The invention discloses a local reinforcement method for a fiber composite material workpiece. The method comprises designing a matching reinforcement panel according to the main load supporting direction, the geometrical shape and the dimension of a part to be reinforced; preparing the reinforcement panel from fiber bundles pre-soaked or not soaked into resin in such a manner that the track of the fiber bundles of the reinforcement panel is consistent with the force bearing direction of the part to be reinforced; laying the reinforcement panel onto the part to be reinforced; and curing the reinforcement panel on the part to be reinforced by integrated curing formation technology or secondary curing formation technology to realize local reinforcement of the fiber composite material workpiece. In comparison with the prior art, the method provided by the invention can realize local reinforcement of the fiber composite material workpiece with random geometrical shape and fiber orientation, ...

Composite material connecting structure

The invention discloses a composite material connecting structure. Specifically, the invention provides a reinforce sheet prepared by designing the fiber track according to the principle stress borne by the composite material connecting structure and a preparation method of the reinforce sheet. Compared with the common fabric reinforce sheet in the prior art, the reinforce sheet has the advantages of simple and convenient design, excellent reinforcing effect, no need of cutting, applicability for mass production and the like. By using the reinforce sheet to reinforce the opening part of the composite material connecting structure, the forming process is simple and flexible, the reinforcing efficiency is greatly improved, and the extremely board application prospect is provided.

Forming and conveying device for thermoplastic composite material

The invention discloses a forming and conveying device for a thermoplastic composite material, which is used for conveying the thermoplastic composite material. The thermoplastic composite material passes through a feeding region and a heating region and then enters a punching region to be punched to obtain a thermoplastic composite material formed member. The forming and conveying device comprises a bracket, a guide rail, a bottom frame conveying part and a driving part, wherein the bottom frame conveying part consists of a bottom frame, a bottom frame rod and a clamp; the driving part consists of a lead screw and a servo motor; under the action of the driving part, the thermoplastic composite material is carried by the bottom frame conveying part to move on the guide rail of the bracket and passes through the feeding region, the heating region and the punching region in sequence, so that a centralized integrated forming and conveying line is truly realized; a conveying process of the ...

Fiber fabric with high buckling resistance and method for preparing fiber composite material part with high buckling resistance

The invention discloses a fiber fabric with high buckling resistance. The fiber track of the fiber fabric is a sine curve or a cosine curve which is obtained by offsetting the fiber fabric along a certain direction (y axle), and a functional equation of the fiber track is shown as yn=asibx+Kn or yn=acosbx+Kn, wherein the a and the b are positive real numbers, the n is a positive integer, and the Kn is a positive real number and is not equal to Kn+1. Compared with a fiber fabric with a parallel and smooth fiber track in the prior art, the fiber fabric has the advantages of parameterized fiber directions, high designability, capability of obviously improving the buckling resistance, suitability for mass production and the like; and a fiber composite material part prepared by the fiber fabric has high buckling resistance and a simple preparation method, and fiber materials are not wasted nearly, so that the cost is greatly reduced.

Resin transfer molding glue injection machine for continuous fiber reinforced nylon 6 composite material

The invention discloses a resin transfer molding glue injection machine for continuous fiber reinforced nylon 6 composite material, which comprises a first charging bucket for accommodating monomers, a second charging bucket for accommodating catalyst, a third charging bucket for accommodating initiator and a fourth charging bucket, wherein the monomers, the catalyst and the initiator, which are heated to be melted, are transferred to the fourth charging bucket through respective metering devices, and mixed to form a glue injection raw material; the glue injection raw material is injected to a mold through a discharge opening in the bottom end of the fourth charging bucket and a pipeline communicated with the bottom end of the fourth charging bucket for molding; and the volume of the fourth charging bucket is larger than that of glue injection raw material which can be accommodated in the mold. The automatic glue injection machine provided by the invention can conduct automatic metering ...

Reinforcing sheet designing and reinforcing method for thermoplastic fiber composite material tapping component

The invention discloses a reinforcing sheet designing and a reinforcing method for a thermoplastic fiber composite material tapping component. Specifically, a matched reinforcing sheet with a radial fiber track layer and an annular fiber track layer is designed according to the shape and the size of the tapping component; and then the reinforcing sheet is used for reinforcing the thermoplastic fiber composite material tapping component. The reinforcing sheet has the advantages of simplicity and convenience in design, excellent reinforcing effect, no cutting, mass production and the like. When the reinforcing sheet performs a reinforcing action, the molding process is simple and flexible, and the reinforcing efficiency is greatly improved, so that the reinforcing sheet has a very wide application prospect.

Method capable of reducing the surface defects of fiber reinforced thermoplastic composite products

The invention relates to a method capable of reducing the surface defects of fiber reinforced thermoplastic composite products, a fiber reinforced thermoplastic composite material formed by the method and products made by the composite material. The method comprises the following steps of: (1) providing a mold with a female mold and a male mold which are matched with each other; (b) laying more than one layer of fiber woven fabric and more than one layer of elastic fiber on the mold in a stacked way, or laying a stacked body containing more than one layer of the fiber woven fabric and more than one layer of the elastic fiber on the mold, wherein the elastic fiber products are one or more than two kinds of fabrics selected from fiber felts and three-dimensional fiber woven fabrics; (c) matching the female mold with the male mold and heating the mold; (d) injecting a thermoplastic resin composite into the mold; and (e) demolding the thermoplastic resin composite injected mold to obtain the ...

Thickness-variable local reinforcement method for fiber composite material workpiece

The invention discloses a thickness-variable local reinforcement method for a fiber composite material workpiece. The method comprises designing a matching reinforcement panel according to the main load supporting direction, the geometrical shape, the dimension and the actual thickness at each position of a part to be reinforced; preparing the reinforcement panel from fiber bundles pre-soaked or not soaked into resin in such a manner that the track of the fiber bundles of the reinforcement panel is consistent with the force bearing direction of the part to be reinforced; laying the reinforcement panel onto the part to be reinforced; and curing the reinforcement panel on the part to be reinforced by integrated curing formation technology or secondary curing formation technology to realize local reinforcement of the fiber composite material workpiece. In comparison with the prior art, the method provided by the invention can realize local reinforcement of the fiber composite material workpiece ...

Calcium carbonate-reinforced polymer calcium carbonate particle distribution characterization method

The invention provides a calcium carbonate-reinforced polymer calcium carbonate particle distribution characterization method. The method comprises the following steps of preparing a calcium carbonate-containing polymer transparent film sample with calcium carbonate content of 2-15wt%, wherein compared with the calcium carbonate-reinforced polymer formula, the sample formula has the basically same components and content but calcium carbonate content or has completely same components and content, taking a sample from the calcium carbonate-containing polymer film sample, acquiring a sample appearance picture by an optical microscope, carrying out image processing, extracting calcium carbonate particle distribution information of the sample, and carrying out statistication to obtain the approximate distribution case of the calcium carbonate particles. The method solves the problem that the existing calcium carbonate particle distribution characterization method cannot accurately determine ...

Production method of fiber reinforced composite material rear automobile case cover

The invention relates to a production method of a fiber reinforced composite material automobile case cover. Particularly the production method of the rear automobile case cover disclosed by the invention comprises the steps of: (1) machining a rear automobile case cover fiber prefabricated element of a first mold provided by the invention; and (2) machining the rear automobile case cover by adopting a second mold provided by the invention and other steps so as to achieve the continuous and automatic production of the fiber reinforced composite material rear automobile case cover. By the method, the production cycle of the rear automobile case cover is shortened obviously, the production efficiency is improved greatly, so that environment protection and human health are facilitated, and the method has much wide application prospect.

Fiber fabric with open pore structure and manufacturing method for fiber composite material part with open pore structure

The invention discloses fiber fabric with an open pore structure and a manufacturing method for a fiber composite material part with the open pore structure. The fiber track of the fiber fabric belongs to an elliptic curve family, and the lengths of a long axis and a short axis are changed progressively from an open pore part to the edge of the fiber fabric. Compared with the prior art, the fiber fabric has the advantages of fiber continuity, fiber direction parametrization, curvature radius controllability, capability of effectively reducing stress concentration, and applicability to batch production. The fiber composite material part which is made from the fiber fabric and has the open pore structure has the advantages of low cost, strong strength, convenience and easiness for manufacture and little fiber material waste.

Resin transfer molding forming glue injection machine of continuous fiber reinforced PBT (polybutylece terephthalate) composite materials

The invention discloses a resin transfer molding forming glue injection machine of continuous fiber reinforced PBT (polybutylece terephthalate) composite materials. The resin transfer molding forming glue injection machine comprises a first material tank, a second material tank and a third material tank, wherein the first material tank is used for containing monomers and heating the monomers, and the second material tank is used for containing catalysts. The monomers and the catalysts are respectively conveyed to the third material tank through respective metering devices to be mixed into glue injection raw materials, the glue injection raw materials are filled into a mold through a material outlet arranged at the bottom end of the third material tank and a connecting pipeline for carrying out molding forming, and in addition, the size of the third material tank is greater than the size of the mold for containing the glue injection raw materials. The automatic glue injection machine provided ...

Production method for automobile roof made of fiber reinforced composite material

The invention relates to a production method for an automobile roof made of fiber reinforced composite material. The production method particularly comprises the following steps: (1) preparing an automobile roof fiber fabricated part by adopting a first mold provided by the invention; (2) preparing the automobile roof by adopting a second mold provided by the invention; and the like. According to the invention, the continuous and automatic production of the automobile roof made of fiber reinforced composite material is realized. The method has the advantages that the production period of the automobile roof is remarkably shortened; the production efficiency of the automobile roof is greatly improved; benefits are brought for environment protection and human health; and the application prospect is very wide.

LED (Light-Emitting Diode) heat radiator and preparation method thereof

The invention discloses a preparation method of an LED (Light-Emitting Diode) heat radiator, comprising the following steps of: (a) providing a raw material mixture, wherein the mixture contains epsilon-caprolactam, graphite powder, a catalyst, an auxiliary catalyst, a lubricant and a coupling agent; (b) polymerizing the epsilon-caprolactam in the raw material mixture to form a fused mixture containing polyamide 6; and (c) injecting the fused mixture containing the polyamide 6 into a mould for preparing the LED heat radiator so as to be injected to form the LED heat radiator. According to the preparation method, the LED heat radiator is molded by one step through reaction and injection molding from a monomer, so that a material preparation process is saved, the production efficiency is high and the energy consumption is small; and the heat radiation performance of the prepared heat radiator is excellent.

AQUEOUS POLYURETHANE-UREA DISPERSION

The present invention relates to an aqueous dispersion based on polyurethane-urea, a composition comprising the same, and a use of the same in a coating agent, a sealant and an adhesive. The aqueous polyurethane-urea dispersion comprises a polyurethane-urea dispersed therein having sulfonate and/or carboxylate groups and lateral carboxyl groups, wherein the amount of said sulfonate and or carboxylate groups is 1.5 to 15 mmol/100 g; said lateral carboxyl is introduced by an aminocarboxylic acid having an amino functionality of greater than 1; the amount of said lateral carboxyl is 1.5 to 9.5 mmol/100 g, based on the polyurethane-urea solid components. Compared with the prior art, the composition of the polyurethane-urea based aqueous dispersion and a carboxyl reactive cross-linking agent provided by the present invention has a good cross-linking property and an excellent heat-resistance, which is not prone to come unglued when being exposed to heat. 115-. (canceled)16. An aqueous polyurethane-urea dispersion , comprising a polyurethane-urea dispersed therein having sulfonate and/or carboxylate groups and lateral carboxyl groups , wherein an amount of said sulfonate and/or carboxylate groups is 1.5 to 15 mmol/100 g; said lateral carboxyl groups are introduced by an aminocarboxylic acid having an amino functionality of greater than 1; an amount of said lateral carboxyl groups is 1.5 to 9.5 mmol/100 g , based on the polyurethane-urea solid components.17. The aqueous polyurethane-urea dispersion according to claim 16 , wherein said polyurethane-urea is prepared by comprising following components:A) at least one polyol component having a number-average molecular weight of 400 to 5000 Daltons and a hydroxyl functionality of not less than 1.9;B) optionally at least one polyol component having a number-average molecular weight of 62 to 399 Daltons;C) at least one diisocyanate or polyisocyanate component;D) at least one aminocarboxylic acid having an amino functionality of ...

A COMPOSITION, ITS PRODUCTION AND USE THEREOF

The present invention relates to a composition, a process for its production, and use thereof. The composition comprises water, a polyurethane polymer and a water-soluble salt of a chelating agent, said polyurethane polymer having a hydrolyzable group, said polyurethane polymer is a reaction product comprising the following reactive components: Component A) an isocyanate, Component B) a compound having an isocyanate-reactive group, wherein said compound comprises at least one group that can be converted to said hydrolyzable group, optionally Component C) an emulsifier, optionally Component D) a solvent, and optionally Component E) a reactive diluent; said water-soluble salt of the chelating agent is present in an amount of from 0.04 to 1.8% by weight, relative to 100% by weight of said polyurethane polymer; and said water-soluble salt of the chelating agent comprises a water-soluble monovalent salt of the chelating agent present in an amount of no less than 30% by weight, relative to 100% by weight of said water-soluble salt of the chelating agent. 115-. (canceled)16. A composition , comprising water , a polyurethane polymer and a water-soluble salt of a chelating agent , said polyurethane polymer having a hydrolyzable group , said polyurethane polymer is a reaction product comprising the following reactive components:Component A) an isocyanate,Component B) a compound having an isocyanate-reactive group, wherein said compound comprises at least one group that can be converted to said hydrolyzable group, and wherein said compound has a melting enthalpy of preferably greater than 15 J/g as measured by DSC-7 from Perkin-Elmer using the first heating curve in a temperature range of from 20 to 100° C. according to DIN65467,optionally Component C) an emulsifier,optionally Component D) a solvent, andoptionally Component E) a reactive diluent;the composition, after being dried and formed into a film, or said polyurethane polymer has a melting enthalpy of greater than 15 J/g ...

AQUEOUS POLYURETHANE DISPERSION

The present invention relates to an aqueous polyurethane dispersion and a process for preparing the same, an adhesive containing the same, and an adhesion article obtained by bonding with the adhesive. The aqueous polyurethane dispersion comprises a polyurethane having an anionic group dispersed therein, the polyurethane has a fusion enthalpy of 3 J/g-100 J/g at 20° C.-100° C. of the first temperature rising curve measured with the DSC according to DIN 65467, a weight-average molecular weight of 31,000-95,000, and the aqueous polyurethane dispersion has an acid value of 0.5 mg KOH/g-8.5 mg KOH/g. The adhesive comprising the aqueous polyurethane dispersion of the present invention has an excellent initial bonding force. 1. An aqueous polyurethane dispersion , comprising a polyurethane having an anionic group dispersed therein , the polyurethane having a fusion enthalpy of 3 J/g-100 J/g at 20° C.-100° C. of the first temperature rising curve measured with the DSC according to DIN 65467 , and a weight-average molecular weight of 31 ,000-95 ,000; wherein the aqueous polyurethane dispersion has an acid value of 0.5 mg KOH/g-8.5 mg KOH/g.2. The aqueous polyurethane dispersion of claim 1 , wherein the anionic group is located on a side chain of the polyurethane claim 1 , and the anionic group is one or more of a sulfonate group and a carboxylate group.3. The aqueous polyurethane dispersion of claim 1 , wherein the polyurethane has a fusion enthalpy of 25 J/g-100 J/g at 20° C.-100° C. of the first temperature rising curve measured with the DSC according to DIN 65467.4. The aqueous polyurethane dispersion of claim 1 , wherein the polyurethane has a carboxyl group content of 0.1 wt %-1.5 wt % claim 1 , on a basis that the amount of the polyurethane is 100 wt %.5. The aqueous polyurethane dispersion of claim 1 , wherein the polyurethane is obtained by reacting a system comprising the following components:a. a polyisocyanate mixture containing hexamethylene diisocyanate;b. an ...

A POLYURETHANE COMPOSITION, PREPARATION METHOD AND APPLICATION THEREOF

The present invention relates to a composition, preparation and use thereof, and a product coated with the composition. The composition comprises: (a) a polyurethane polymer which is a reaction product comprising the following components: (a1) a polyisocyanate, (a2) a compound having an isocyanate-reactive group, which comprises a polymer polyol selected from one or more of the following: a polyether polyol and a polyolefin polyol, (a3) optionally an emulsifier, (a4) optionally a solvent, and (a5) optionally a reactive diluent; (b) an organic antioxidant in an amount of 0.01 wt % to 2.4 wt %, based on the total weight of solid components of the composition; (c) a chelating agent; and (d) water. The composition according to the present invention has good high-temperature yellowing resistance. 1. A composition comprising: (a1) a polyisocyanate,', '(a2) a compound having an isocyanate-reactive group, which comprises a polymer polyol comprising a polyether polyol and/or a polyolefin polyol,', '(a3) optionally an emulsifier,', '(a4) optionally a solvent, and', '(a5) optionally a reactive diluent;, '(a) a polyurethane polymer which is a reaction product of a reaction mixture comprising(b) an organic antioxidant in an amount of 0.01 wt % to 2.4 wt %, based on a total weight of solid components of the composition;(c) a chelating agent;(d) water;(e) optionally a stabilizer;(f) optionally a crosslinking agent; and(g) optionally an additive.2. The composition according to claim 1 , comprising an amount of from 70 wt % to 100 wt % of the polymer polyol claim 1 , based on a total weight of the compound (a2) having an isocyanate-reactive group.3. The composition according to claim 1 , comprising an amount of from 0.06 wt % to 2.0 wt % of the organic antioxidant (b) claim 1 , based on the total weight of solid components of the composition.4. The composition according to claim 1 , comprising an amount of from 0.04 wt % to 1.8 wt % of the chelating agent (c) claim 1 , based on the ...

AN AQUEOUS TWO-COMPONENT ADHESIVE

The invention relates to an aqueous two-component adhesive and use thereof, in particular to the use for laminating a rigid substrate and a plastic film, a laminated product comprising the adhesive, and a method for producing a laminated product. The aqueous two-component adhesive comprises component A and component B, the component A comprising more than 50% by weight and not more than 99% by weight of an aqueous polyurethane dispersion; the B component comprising 1% by weight to 16% by weight of water-dispersible modified polyisocyanate based on hexamethylene diisocyanate, the above weight percentage based on the amount of the adhesive being 100% by weight; wherein the aqueous polyurethane dispersion comprises polyurethane dispersed therein, the enthalpy of melting of the polyurethane being 26 to 100 J/g, preferably 30 to 100 J/g, particularly preferably 30 to 60 J/g, measured at 20° C. to 100° C. for the first heating curve by DSC according to DIN65467 (1999). The aqueous two-component adhesive has the advantages of safety and environmental protection, excellent performance and low laminating temperature. 1. An aqueous two-component adhesive , comprising component A and component B , said component A comprising more than 50% by weight and not more than 99% by weight of an aqueous polyurethane dispersion; said component B comprising 1% by weight to 16% by weight of a water-dispersible modified polyisocyanate based on hexamethylene diisocyanate , the above weight percentage based on the amount of the adhesive being 100% by weight;wherein the aqueous polyurethane dispersion comprises polyurethane dispersed therein, the enthalpy of melting of the polyurethane being 26 to 100 J/g, measured at 20° C. to 100° C. for the first heating curve by DSC according to DIN65467 (1999).2. The adhesive according to claim 1 , wherein the polyurethane is obtained by reacting a system comprising an aliphatic polyisocyanate and polybutylene adipate polyol.3. The adhesive according to ...

A composition, its production and use thereof

The present invention relates to a composition, a process for its production, and use thereof. The composition comprises water, a polyurethane polymer and a water-soluble salt of a chelating agent, said polyurethane polymer having a hydrolyzable group, said polyurethane polymer is a reaction product comprising the following reactive components: Component A) an isocyanate, Component B) a compound having an isocyanate-reactive group, wherein said compound comprises at least one group that can be converted to said hydrolyzable group, optionally Component C) an emulsifier, optionally Component D) a solvent, and optionally Component E) a reactive diluent; said water-soluble salt of the chelating agent is present in an amount of from 0.04 to 1.8% by weight, relative to 100% by weight of said polyurethane polymer; and said water-soluble salt of the chelating agent comprises a water-soluble monovalent salt of the chelating agent present in an amount of no less than 30% by weight, relative to 100% by weight of said water-soluble salt of the chelating agent.

A polyurethane composition, preparation method and application thereof

The present invention relates to a composition, preparation and use thereof, and a product coated with the composition. The composition comprises: (a) a polyurethane polymer which is a reaction product comprising the following components: (a1) a polyisocyanate, (a2) a compound having an isocyanate-reactive group, which comprises a polymer polyol selected from one or more of the following: a polyether polyol and a polyolefin polyol, (a3) optionally an emulsifier, (a4) optionally a solvent, and (a5) optionally a reactive diluent; (b) an organic antioxidant in an amount of 0.01 wt% to 2.4 wt%, based on the total weight of solid components of the composition; (c) a chelating agent; and (d) water. The composition according to the present invention has good high- temperature yellowing resistance.

Aqueous polyurethane urea dispersion

The present invention relates to an aqueous polyurethane urea dispersion containing a polyurethane urea and a preparation process and use thereof, especially to the use in the field of coatings, adhesives or sealants, and the products obtained by coating, bonding or sealing with the polyurethane urea dispersion. The polyurethane urea of the aqueous polyurethane urea dispersion containing the polyurethane urea is obtained by the reaction of a system comprising the following components: a mixture of isocyanates, a polymer polyol, a monofunctional nonionic hydrophilic compound and a potentially anionic or anionic hydrophilic compound; said aqueous polyurethane urea dispersion has a viscosity of 5s - 18s, tested with an Anest Iwata NK-2 cup according to Standard JIS K 5600-2-2- 1999-02; relative to the total weight of said aqueous polyurethane urea dispersion, the amount of said polyurethane urea is 30 wt% - 50 wt%. The aqueous polyurethane urea dispersion of the present invention has good compatibility with various organic solvents.

Method for preparing a bonded article by conducting single-sided gluing

This invention relates to a method for preparing a bonded article by conducting single-sided gluing, the bonded article prepared by said method, and the use of the bonded article in the production of footwear. The method comprises the steps of: a. applying a cleaning agent to at least one surface of a first substrate, and drying the surface of the first substrate to which the cleaning agent is applied; b. applying an adhesive to at least one surface of a second substrate, and drying the surface of the second substrate to which the adhesive is applied; and c. contacting the surface of the first substrate treated in step a with the surface of the second substrate treated in step b to obtain the bonded article; wherein the cleaning agent comprises a polar organic solvent and a polyisocyanate; the polar organic solvent has a boiling point of no more than 135 °C and is not isocyanate -reactive; wherein the polyisocyanate has an isocyanate group content of from 0.005 wt% to 6 wt%, based on the weight of the cleaning agent.

A composition, preparation method and application thereof

The present invention relates to a composition, preparation and use thereof, and a product coated 5 with the composition. The composition comprises: (a) a polyurethane polymer which is a reaction product comprising the following components: (a1) a polyisocyanate, (a2) a compound having an isocyanate-reactive group, which comprises a polyester polyol in an amount of more than 10 wt%, based on the total weight of the compound having an isocyanate-reactive group, (a3) optionally an emulsifier, (a4) optionally a solvent, and (a5) optionally a reactive diluent; (b) an organic 10 antioxidant in an amount of 0.001 wt% to 1 wt%, based on the total weight of solid components of the composition; (c) a chelating agent; and (d) water. The composition according to the present invention has good yellowing resistance.

Aqueous Polyurethane Urea Dispersion

The present invention relates to an aqueous polyurethane urea dispersion containing a polyurethane urea and a preparation process and use thereof, especially to the use in the field of coatings, adhesives or sealants, and the products obtained by coating, bonding or sealing with the polyurethane urea dispersion. The polyurethane urea of the aqueous polyurethane urea dispersion containing the polyurethane urea is obtained by the reaction of a system including the following components: a mixture of isocyanates, a polymer polyol, a monofunctional nonionic hydrophilic compound and a potentially anionic or anionic hydrophilic compound; said aqueous polyurethane urea dispersion has a viscosity of 5 s-18 s; relative to the total weight of said aqueous polyurethane urea dispersion, the amount of said polyurethane urea is 30 wt %-50 wt %. The aqueous polyurethane urea dispersion of the present invention has good compatibility with various organic solvents.

Una composición, su producción y uso de la misma

La presente invención se refiere a una composición, un proceso para su producción y su uso. La composición comprende agua, un polímero de poliuretano y una sal soluble en agua de un agente quelante, teniendo dicho polímero de poliuretano un grupo hidrolizable, dicho polímero de poliuretano es un producto de reacción que comprende los siguientes componentes reactivos: Componente A) un isocianato, Componente B) un compuesto que tiene un grupo reactivo con isocianato, en el que dicho compuesto comprende al menos un grupo que puede convertirse en dicho grupo hidrolizable, opcionalmente Componente C) un emulsionante, opcionalmente Componente D) un disolvente y opcionalmente Componente E) un diluyente reactivo; dicha sal soluble en agua del agente quelante está presente en una cantidad de 0,04 a 1,8% en peso, con respecto al 100% en peso de dicho polímero de poliuretano; y dicha sal soluble en agua del agente quelante comprende una sal monovalente soluble en agua del agente quelante presente en una cantidad no inferior al 30% en peso, con respecto al 100% en peso de dicha sal soluble en agua del agente quelante. . (Traducción automática con Google Translate, sin valor legal)

Aqueous polyurethane urea dispersion

The present invention relates to an aqueous polyurethane urea dispersion containing a polyurethane urea and a preparation process and use thereof, especially to the use in the field of coatings, adhesives or sealants, and the products obtained by coating, bonding or sealing with the polyurethane urea dispersion. The polyurethane urea of the aqueous polyurethane urea dispersion containing the polyurethane urea is obtained by the reaction of a system comprising the following components: a mixture of isocyanates, a polymer polyol, a monofunctional nonionic hydrophilic compound and a potentially anionic or anionic hydrophilic compound; said aqueous polyurethane urea dispersion has a viscosity of 5s - 18s, tested with an Anest Iwata NK-2 cup according to Standard JIS K 5600-2-2- 1999-02; relative to the total weight of said aqueous polyurethane urea dispersion, the amount of said polyurethane urea is 30 wt% - 50 wt%. The aqueous polyurethane urea dispersion of the present invention has good compatibility with various organic solvents.

A polyurethane composition, preparation method and application thereof

Composición de poliuretano, procedimiento de preparación y aplicación de la misma

La presente invención se refiere a una composición, preparación y uso de la misma, y a un producto recubierto con la composición. La composición comprende: (a) un polímero de poliuretano que es un producto de reacción que comprende los siguientes componentes: (a1) un poliisocianato, (a2) un compuesto que tiene un grupo reactivo con isocianato, que comprende un poliol polimérico seleccionado de uno o más de los siguiente: un poliéter poliol y un poliolefina poliol, (a3) opcionalmente un emulsionante, (a4) opcionalmente un disolvente y (a5) opcionalmente un diluyente reactivo; (b) un antioxidante orgánico en una cantidad del 0,01% en peso al 2,4% en peso, basado en el peso total de los componentes sólidos de la composición; (c) un agente quelante; yd) agua. La composición según la presente invención tiene buena resistencia al amarillamiento a altas temperaturas. (Traducción automática con Google Translate, sin valor legal)

A transparent pud and its application

The present invention relates an aqueous dispersion comprising at least one polyurethane, wherein the at least one polyurethane is prepared from at least the following components (A) at least one polyisocyanate, (B) at least one polymeric polyol having a number average molecular weight of 400 to 6000 g/mol, wherein at least one polycarbonate polyol is present in the polymeric polyol component (B) in an amount of 55 to 100%by weight, based on total weight of component (B), (C) optionally at least one monofunctional nonionic hydrophilizing agent, (D) at least one compound selected from the group consisting of polyols, aminopolyols, polyamines and mixtures thereof, in each case having a number average molecular weight of less than 400 g/mol, (E) at least one compound selected from the group consisting of monools, diols, polyols, monoamines, diamines, polyamines and mixtures thereof, in each case having at least one salt group, preferably an anionic group, or a functional group that can be converted into a salt group, preferably into a anionic group, (F) at least a neutralizer selected from the group consisting of tertiary amine compounds with boiling point above 100 ℃ at atmospheric pressure, inorganic alkali, preferably potassium hydroxide, sodium hydroxide, and mixtures thereof, wherein the at least one polyurethane dispersion has an average particle diameter D (i) 90 of less than or equal to 100 nm, to a coating formulation comprising such an aqueous dispersion, to the use of this aqueous dispersion in a coating formulation, to the process for the coating of a substrate, wherein a coating formulation comprising such an aqueous dispersion used, to the use of such a coating formulation for coating of a substrate and to a substrate coated with the coating formulation.

A transparent pud and its application

The present invention relates an aqueous dispersion comprising at least one polyurethane, wherein the at least one polyurethane is prepared from at least the following components (A) at least one polyisocyanate, (B) at least one polymeric polyol having a number average molecular weight of 400 to 6000 g/mol, wherein at least one polycarbonate polyol is present in the polymeric polyol component (B) in an amount of 55 to 100% by weight, based on total weight of component (B), (C) optionally at least one monofunctional nonionic hydrophilizing agent, (D) at least one compound selected from the group consisting of polyols, aminopolyols, polyamines and mixtures thereof, in each case having a number average molecular weight of less than 400 g/mol, (E) at least one compound selected from the group consisting of monools, diols, polyols, monoamines, diamines, polyamines and mixtures thereof, in each case having at least one salt group, preferably an anionic group, or a functional group that can be converted into a salt group, preferably into a anionic group, (F) at least a neutralizer selected from the group consisting of tertiary amine compounds with boiling point above 100 °C at atmospheric pressure, inorganic alkali, preferably potassium hydroxide, sodium hydroxide, and mixtures thereof, wherein the at least one polyurethane dispersion has an average particle diameter D(i)90 of less than or equal to 100 nm, to a coating formulation comprising such an aqueous dispersion, to the use of this aqueous dispersion in a coating formulation, to the process for the coating of a substrate, wherein a coating formulation comprising such an aqueous dispersion used, to the use of such a coating formulation for coating of a substrate and to a substrate coated with the coating formulation.

Aqueous Polyurethane-Urea Dispersion

The present invention relates to an aqueous polyurethane-urea dispersion including polyurethane-urea and a preparation method and use thereof, especially in the field of coating compositions, binders or inks, and a product obtained by coating, bonding, sealing or printing with the aqueous polyurethane-urea dispersion. The polyurethane-urea of the aqueous polyurethane-urea dispersion including polyurethane-urea is obtained by the reaction of a system including the following components: a polyisocyanate, a polycarbonate polyol with a hydroxyl functionality of 1.9-2.1, a polyester polyol with a hydroxyl functionality of 1.9-2.1, an amino-containing compound, a hydroxyl-containing carboxylic acid and a neutralizer, where the weight ratio of the polycarbonate polyol to the polyester polyol is 6:1-20:1. The aqueous polyurethane-urea dispersion of the present invention has small particle size, narrow particle size distribution, good color rendering, hydrolysis resistance and color fastness to rubbing, and can be used as a binder for inkjet inks.

Adhesive and application thereof

The present invention relates to an adhesive and application thereof, and a bonded product obtained by using the adhesive. The adhesive comprises: a. at least one aqueous polyurethane dispersion; b. at least one surface passivated polyisocyanate; c. at least one polycarbodiimide having a weight-average molecular weight of 500 to 100,000; and d. optionally a carbodiimide having a carbodiimide group functionality of 1. The coating formed by the adhesive provided according to the present invention has good hydrolysis resistance.