51results about "Cellulose derivative adhesives" patented technology

A binder comprising a polymeric binder comprising the products of a carbohydrate reactant and organic acid is disclosed. The binder is useful for consolidating loosely assembled matter, such as fibers. Fibrous products comprising fibers in contact with a carbohydrate reactant and an organic acid are also disclosed. The binder composition may be cured to yield a fibrous product comprising fibers bound by a cross-linked polymer. Further disclosed are methods for binding fibers with the carbohydrate based binder using an organic acid.

The invention relates to the field of magnetic materials, in particular to a method for manufacturing an anisotropic multi-pole magnetic ring through dry-press forming. Aiming at the problem that the multi-pole magnetic ring manufactured by the prior art through the dry-press forming is easy to crack, has low yield and the like, the invention provides the method for manufacturing the anisotropic multi-pole magnetic ring through the dry-press forming, and for the multi-pole magnetic ring manufactured by the method, the surface magnetism is more than 1,500 Gs, the Br is more than 3,600 Gs, and the Hcb is more than 3,000 Oe. The aim of the invention is achieved through the following technical proposal: performing wet method pulverization on magnetic powder; adding more than one binding agent and lubricating agent into the magnetic powder which is dried; then performing prepressing and pre-magnetization on the mixture, and then performing a mixing process for mixing the mixture by using a high-speed disintegrator; performing a double-sided equal pressure forming process on the powder in a radial magnetic field; and performing a sintering process for sintering the formed sample, wherein the magnetic powder contains a pre-sintering material and an additive.

The present invention relates to denture adhesive compositions. The denture adhesive compositions include an adhesive component and a viscosity index improver. The present invention is also directed to methods relating to the denture adhesive compositions.

By a temporary adhesive for production of semiconductor device containing (A) a polymer compound having a thermal decomposition initiation temperature of 250° C. or more, and (B) a radical polymerizable monomer, and an adhesive support and a production method of semiconductor device using the same, a temporary adhesive for production of semiconductor device, which can temporarily support a member to be processed (for example, a semiconductor wafer) with a high adhesive force even under high temperature condition (for example, at 100° C.) when the member to be processed is subjected to a mechanical or chemical processing, which reduces a problem of generation of gas therefrom in the temporary support even under high temperature condition, and which can easily release the temporary support for the member processed without imparting damage to the member processed, and an adhesive support and a production method of semiconductor device using the same can be provided.

Biomimetic adhesive compositions can be used in various aspects of subterranean treatment operations. Methods for treating a subterranean formation can comprise: providing an adhesive composition that comprises a first polymer comprising a plurality of monomers that comprise a phenolic moiety, a biopolymer that is crosslinkable with the first polymer, a crosslinking agent, and an oxidizing agent; introducing the adhesive composition into a subterranean formation; and forming a coacervate-bound surface in the subterranean formation by crosslinking the first polymer.

An aqueous adhesive composition and a process for preparing such compositions are disclosed. The composition comprises macromolecular complex comprising (A) a first component comprising (i) a framework element and (ii) a polyphenol, and (B) second component comprising a polypeptide, oligopeptide, amino acid, or polyamine. The framework element comprises (a) a polypeptide, oligopeptide, amino acid, or polyamine, (b) a polysaccharide, oligosaccharide, or monosaccharide, or a saccharide conjugate, or (c) a lignin, a lignan or a lignin conjugate. The polyphenol comprises a tannin, a tannic acid, a flavonoid, or a poly-resorcinol. An adhesive precursor composition comprising the first component is also disclosed.

Provided is a collagen-cellulose material containing, based on a total weight of the collagen-cellulose material: 1.0-9.0 wt. % of a collagen; 0.2-3.0 wt. % of cellulose or a derivative thereof; 0.5-6.5 wt. % of at least one acid selected from an inorganic acid, an organic acid, and mixtures thereof; and water. Also provided is a process for producing the collagen-cellulose material. Also provided is an artificial blood vessel containing the collagen-cellulose material which is in the form of a hollow tube, an artificial tissue containing the collagen-cellulose material which is in the form of a sheet, and an artificial bone containing the collagen-cellulose material which is in the form of a solid. Also provided is a medical device containing the collagen-cellulose material, as well as a process for testing phlebotomical, surgical or orthopedic instrumentation or practicing phlebotomical, surgical or orthopedic procedures using the medical device containing the collagen-cellulose material.

The present invention provides a processed biodegradable article having excellent water resistance and rigidity, which can be used as a food container, and a biodegradable composition required to produce the processed biodegradable article.

The respective components are mixed such that the content of starch is 15% by mass or more and 75% by mass or less, the content of protein is 5% by mass or more and 50% by mass or less, the content of cellulose fiber is 3% by mass or more and 50% by mass or less, the content of polyphenols is 0.5% by mass or more and 20% by mass or less, and the content of sodium chloride is 0% by mass or more and 5% by mass or less, and then water is added in the amount of 10 parts by mass or more and 100 parts by mass or less based on 100 parts by mass of the mixture, followed by kneading the mixture using a mixer. Then, the kneaded mixture is press-molded into a predetermined shape such as a cup or a dish, and heat-treated at 120° C. or higher and 180° C. or lower to obtain a processed article having excellent biodegradability.

Fibrous substrates may be adhered to other substrates utilizing substituted cellulose ester adhesives that comprises a cellulose polymer backbone having an organic ester substituent and an inorganic ester substituent that comprises an inorganic, nonmetal atom selected from the group consisting of sulfur, phosphorus, boron, and chlorine.

The invention discloses a preparation method of a hyperbranched modified cellulose wood adhesive, which comprises the following steps: oxidizing microcrystalline cellulose (MCC) by sodium periodate to obtain dialdehyde cellulose (DAC), and further preparing the cellulose-based wood adhesive by taking the dialdehyde cellulose (DAC) and a hyperbranched polyamine compound as raw materials through Schiff base reaction. The hyperbranched modified cellulose wood adhesive is green and environment-friendly, free of formaldehyde release, high in bonding strength and good in water resistance when being used for plywood, and the performance of the hyperbranched modified cellulose wood adhesive is superior to that of the national standard GB/T 17657-2013. The invention aims to develop a novel cellulose-based biomass formaldehyde-free wood adhesive, and meanwhile, high-value and high-efficiency utilization of cellulose biomass resources is realized.

The present invention relates to an adhesive, and more particularly to a cellulose-based dopa adhesive and a preparation method thereof. The preparation method is characterized in that dopamine hydrochloride is grafted to oxidized cellulose in the form of amide bond by amidation. Also provided is a cellulose-based dopa adhesive prepared by the method. Dopa is combined with oxidized cellulose basedon the adhesion, water resistance, non-toxicity and biocompatibility of the dopa, and dopamine hydrochloride is used to graft the oxidized cellulose, imparting adhesion to the oxidized cellulose. Thus, a non-toxic, harmless and pollution-free adhesive is prepared. Due to the compatibility of dopa and the biodegradability of cellulose, the product can be applied to biomedical and other areas.

Disclosed herein are a binder composition for manufacturing an electrode of an energy storage device and a method for manufacturing an electrode of an energy storage device. The binder composition includes galactomannan as a major component and may exhibit sufficient binding force with a considerably small amount, as compared to binders in the related art. When the binder composition disclosed herein is used to manufacture an energy storage device having the same weight as that manufactured using the binder in the related art, the energy storage device may contain a greater amount of active material, compared to the binder in the related art. Consequently, beneficial effects such as improvement in an energy density as well as eco-friendly characteristics may be rendered.

The invention provides electric aluminum suitable for low-temperature hot stamping. An adhesive layer is formed by coating of an adhesive. The adhesive is composed of, by weight, 1-40 parts of a low-softening-point resin compound, 10-90 parts of solvent and 0.2-10 parts of auxiliaries, wherein the low-softening-point resin compound at least comprises 1-20 parts of polyamide resin and 1-10 parts of rosin resin. According to the aluminum suitable for low-temperature hot stamping, the low-softening-point resin compound comprises the polyamide resin and the rosin resin of certain proportions, the prepared adhesive is stable in performance through the mutual effect of the polyamide resin and the rosin resin, the melting temperature of the adhesive layer formed by coating of the adhesive can be controlled to be 50-110 DEG C, thus hot stamping is conducted under the condition of low temperature of 70-120 DEG C, and high energy consumption is avoided; and besides, the severe loss of moisture in a hot-stamped material and thermal expansion of a hot stamping plate are avoided, the rejection rate is decreased, and the product cost is reduced.

The invention discloses an environment-friendly bio-oil starch adhesive and a preparation method thereof. The adhesive comprises the raw materials by weight: 40-55 parts of starch, 1-1.2 parts of an oxidant, 25-35 parts of polyvinyl alcohol, 10-20 parts of acrylamide, 8-10 parts of quaternary ammonium salt chitosan, 25-30 parts of bio-oil, 6-9 parts of a curing agent, 10-12 parts of modified cellulose and 10-12 parts of modified silicon dioxide. The environment-friendly bio-oil starch adhesive and the preparation method thereof provided by the invention have the advantages that the environment-friendly bio-oil starch adhesive is simple in process design and reasonable in component proportion, the prepared adhesive not only has excellent water resistance and bonding performance, but also has excellent antibacterial property, and the practicability is greatly improved.

A preform for thermoset resin composition molding is provided that upon cure forms a variety of molded and fiber reinforced articles used in a variety of applications such as vehicle components including bed lines, body components, trim, interior components, and undercar components; architectural components such as trim and doors, marine components including hulls, trim, and cockpit pieces; and similar structures in aerospace settings. A novel slurry composition, a novel centrifugal process, or a combination thereof provide superior quality preforms that are created with greater throughput relative to conventional techniques. The inhibition of fiber movement between the time such a fiber contacts the mold, or fibers already in place on the mold, and the time the fibers are set in position provides a superior fiber homogeneity and randomized orientation relative to existing slurry techniques with attributes of low scrap generation, and process flexibility with respect to part shape and fiber material.

This invention discloses a construction glue, which is composed of cellulose, water glass and water at a weight ratio of (1-4) :( 1-12) :( 10-40). The glue is prepared by mixing cellulose and water, adding water glass, and stirring. The cellulose is one or more of methylcellulose, ethylcellulose and carboxypropyl cellulose. The glue does not contain formaldehyde, thus is environmentally friendly. Since water glass is adopted for adhesion, the glue has good adhesiveness, good impermeability and good weathering resistance. The peel strength at 180 deg.C is greater than or equal to 20 N/20 mm, 30% higher than the JC438-91 standards.

The invention relates to a heat-conductive pressure-sensitive adhesive tape. The heat-conductive pressure-sensitive adhesive tape comprises a heat-conductive pressure-sensitive adhesive layer, a lightrelease protective layer, and a heavy release protective layer; the heat-conductive pressure-sensitive adhesive layer is arranged on the heavy release protective layer. The initial viscosity of the heat-conductive pressure-sensitive adhesive tape is adjustable, so that excellent heavy industry performance is achieved; after bonding, subsequent solidification of heat-conductive adhesive can be realized, reduction of the bonding strength with time is not caused, and extra mechanical fastening buckle design by users of conventional heat conductive adhesive is not needed, so that client manufacturing cost is reduced.

The invention discloses an environment-friendly adhesive and a preparation method thereof, and belongs to the technical field of adhesives. According to the adhesive prepared by the preparation methoddisclosed by the invention, liquidity of the adhesive in a using process is improved; through nucleophilic addition of polyvinyl alcohol and furfural, the bonding strength of the obtained substancesis improved, and a bonding network structure is formed; free aldehyde groups are reduced, and the aldehyde groups are bound to the network structure, so that the aldehyde groups are not diffused easily to harm a human body. An added modified active agent changes adhesion performance of the adhesive, and a formed adhesive film has relatively good tear resistance and impact resistance, so that usability of the adhesive is enhanced. According to a prepared cross-linking additive, active substances are improved and stored in the adhesive network structure, so that harmful substances are preventedfrom escaping, and overall performance of the adhesive is improved. Elasticity of the adhesive is improved by xanthan gum, carrageenan and the like, so that shrinkage and cracking are reduced, and good film-forming strength is kept. The adhesive disclosed by the invention solves the problems of large amount of free formaldehyde and low bonding strength in existing adhesives.

A binder resin for an inorganic particle-dispersed paste that excels in both printability and adhesiveness and such an inorganic particle-dispersed paste are provided. The resin includes a mixture in which a polyvinyl acetal and a cellulose derivative are mixed so as to satisfy 0.2≤X/(X+Y)≤0.8, where X and Y stand for parts by mass of the polyvinyl acetal and the cellulose derivative, respectively. When a paste is formulated by mixing and kneading the resin with spherical nickel particles with an average particle diameter of 0.3 μm, barium titanate particles with an average particle diameter of 0.05 μm, a nonionic surfactant, dihydroterpineol, and mineral spirit at the prescribed mixing ratio, the paste has prescribed rheological characteristics.

The invention provides a method for preparing conductive silver colloid, comprising following steps: (1) preparing collodion acetone; (2) preparing triethanolamine butanol; (3) putting silver carbonate of 200- 400 units into container, and injecting 30- 60 units of butanol into container, stirring; (4) adding 2- 6 units of collodion acetone when temperature rises to 80 Deg. C, adding 1- 3 ml of triethanolamine butanol into container, and the temperature is heated to 93 Deg. C 10 minutes later; (5) dropping triethanolamine butanol using dropper with continuous stirring, 1- 3 hours later the dropping is finished and the silver mirror phenomenon will be formed at later reaction period; insulating temperare for 10 minutes, cooling to 60 Deg. C and stopping stirring; (6) pouring silve colloid into brown container, precipitating, pouring out of triethanolamine butanol in upper layer when gradation is obvious. The invention is characterized by convenient utilization, sound combined properties, good anti- compacting and adhesion power.

The invention discloses a waterproof corrosion-resistant polyethylene fabric and a preparation method thereof. The polyethylene fabric comprises a base cloth layer, a waterproof bonding layer and a polyethylene layer which are stacked in sequence, wherein the base cloth layer comprises cotton cloth and a flame retardant; and the waterproof bonding layer is a cellulose polymer containing long-chain alkyl. The waterproof corrosion-resistant polyethylene fabric has the beneficial effects that (1) boric acid and phytic acid are chelated and crosslinked through glucose to prepare an environment-friendly phosphorus-nitrogen synergistic flame retardant, so that the flame retardance of the fabric is effectively improved; (2) a cellulose polymer containing an alkyl long chain and isocyanate is prepared, the waterproofness is improved, and the base cloth layer and the polyethylene layer are effectively bonded through the reaction of isocyanate, hydroxyl and amino; and (3) n-hexadecane is added into the pre-impregnation liquid, so that the loading of the silane coupling agent modified titanium dioxide nanoparticles on the polyethylene film is effectively enhanced, and the corrosion resistance and the water resistance are further enhanced.