45results about "Amylose/amylopectin adhesives" patented technology

Environmentally friendly biopolymer adhesives are described, wherein the adhesives comprise biopolymer particles, more preferably starch microparticles, and most preferably starch nanoparticles, and their aqueous dispersions. Applications for the biopolymer particle adhesives are described, that are environmentally friendly alternatives to petroleum based synthetic adhesives. The biopolymer particle adhesives provide are biodegradable as well as repulpable, and thus provide bio-based recycling-friendly alternatives to synthetic adhesives derived from petroleum resources.

The invention relates to a preparation method of modified biomass lithium ion battery adhesives. According to the method, under high temperature and vacuum conditions, a plurality of natural polymers, such as sodium carboxymethylcellulose, sodium alginate, amylose, Arabia gum, carboxymethyl chitin, carboxymethyl chitosan and the like, and polyacrylic acid or polymethylacrylic acid undergo esterification crosslinking, so that a series of lithium ion battery adhesives can be prepared. The adhesives prepared by the invention can be applied in carbon based and silicon based lithium ion battery negative electrode materials at small dosages and can reach very good bonding effects. The film-forming property of materials can be improved substantially. Also, the adhesives prepared by the invention have the advantages of cheap and easily available raw materials, simple preparation method, environmental friendliness and no pollution, etc.

A non-toxic water erodible denture adhesive incorporating a starch portion and a polysaccharide portion whereby a elastomeric paste of excellent bioadhesiveness and adhesion to smooth surfaces is obtained; and which is found to have excellent thin film forming properties and is water erodible facilitating easy removal from denture recesses as well as the intraoral cavity.

The invention belongs to the field of auxiliary adhesives in wallpaper and wall cloth industry and in particular relates to a wallpaper mural adhesive and a preparation method of the wallpaper mural adhesive. The wallpaper mural adhesive is prepared by gelatinizing, cross-linking, complexing, adhesive mixing and reacting of the following raw materials in parts by weight: 66-68 parts of deionized water, 10-12 parts of waxy modified starches, 2-3 parts of cross-linking etherified starch, 2.0-2.5 parts of carbamide, 0.08-0.1 part of a stabilizing agent, 19-21 parts of acrylate modified white latex, 0.1 part of a defoaming agent, 1-1.2 parts of glycerol and 0.25 part of a bactericide. Two modified starches are gelatinized, cross-linked, complexed and reacted to form glutinous rice glue; the glutinous rice glue is mixed with the acrylate modified white latex to modify adhesion performance and form mural adhesive. The wallpaper mural adhesive can be used for pasting thick and heavy wallpaper, paper cloth and mural.

Novel starch-based glue paste compositions are disclosed composed of (i) a carrier paste containing 5 to 16 wt % of a starch selected from the group consisting of corn starch, wheat starch, rye starch, oat starch, barley starch, potato starch, tapioca starch and pea starch, each being native starch or chemically modified starch, or any mixture thereof and (ii) a main paste with a total starch content of 25 to 50 wt % composed of a mixture of 10 to 30 wt % native rice starch or an acetylated version thereof having an amylose content of 12 to 20 wt %, 1 wt % other compounds and a complementary amylopectin content of 87 to 79 wt %, and 90 to 70 wt % of a starch or mixture of starches selected from the above defined group. Processes for the manufacture of the novel glue paste compositions based on the Stein-Hall method are disclosed, as well as a premix of starches for said manufacture. The glue paste compositions present excellent film forming and glueing properties and are particularly suitable for the manufacture of laminated corrugated board.

The present invention provides a biodegradable article formed from enzyme-synthesized amylose using phosphorylase, wherein the enzyme-synthesized amylose is composed of glucose monomers exclusively bonded by alpha-1,4-glucosidic likage and has a weight average molecular weight of not less than 100 kDa, preferable not less than 600 kDa. The enzyme-synthesized amylose employed in the present invention has a molecular weight distribution (Mw / Mn) of not more than 1.25 and can be chemically modified if desired. The biodegradable article of the present invention can be produced by (a) the enzyme-synthesized amylose and / or its modified one, or a combination of the amylose (a) and another polymer material (b).

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.

A preparation method for glutinous rice glue includes following steps of: soaking an impurity-removed glutinous rice glue raw material for 1-12 hours, carrying out a pulp grinding process to the soaked glutinous rice glue, filtering the glutinous rice glue through a 100 meshes screen mesh and carrying out a high-temperature gelatinization process to the filtered glutinous rice glue at 120 DEG C. The glutinous rice glue is strong in binding force, is good in constructability, is mouldproof and anti-bacterial, and is suitable for a bond between various wall papers and a substrate. A performance of the glutinous rice glue can accord with a standard requirement in JC / T548-1994 "wall paper adhesive". Both a starch adhesiveness and a peel strength preserving rate of the glutinous rice glue are greater than 85% through a three-time freeze-thaw freezing-cycle test at -20 DEG C.

The invention discloses epoxy glue for processing of a crystal liable to separate during boiling, and a preparation method of the epoxy glue. The modified epoxy glue consists of a component A and a component B, wherein the component A contains epoxy resin, an elastomer, a degumming separating agent, a plasticizer, fillers and a thixotropic agent; the component B contains a polymercaptan curing agent, a tertiary amine accelerant, a silane coupling agent, a degumming separating agent, fillers and a thixotropic agent. The glue has high adhesive strength and high medium resistance when being used for positioning and adhering processing of the crystal material; when the crystal material is completed and heated to be subjected to degumming separation, the temperature is not high, and the residual glue is easy to clean.

Novel starch-based glue paste compositions are disclosed composed of (i) a carrier paste containing 5 to 16 wt % of a starch selected from the group consisting of corn starch, wheat starch, rye starch, oat starch, barley starch, potato starch, tapioca starch and pea starch, each being native starch or chemically modified starch, or any mixture thereof and (ii) a main paste with a total starch content of 25 to 50 wt % composed of a mixture of 10 to 30 wt % native rice starch or an acetylated version thereof having an amylose content of 12 to 20 wt %, 1 wt % other compounds and a complementary amylopectin content of 87 to 79 wt %, and 90 to 70 wt % of a starch or mixture of starches selected from the above defined group. Processes for the manufacture of the novel glue paste compositions based on the Stein-Hall method are disclosed, as well as a premix of starches for said manufacture. The glue paste compositions present excellent film forming and glueing properties and are particularly suitable for the manufacture of laminated corrugated board.

A novel adhesive that finds use in a cold corrugating system has a 5 second tack at a temperature of 160° F. of at least 50±2 grams.

The invention relates to an environment-friendly plasticine adhesive comprising the following components in parts by weight: 30-90 parts of starch and 10-70 parts of a plasticizing moisturizer. The environment-friendly plasticine adhesive provided by the invention is prepared from harmless and fully natural materials, and the environment-friendly plasticine adhesive is biodegradable, thereby being harmless to a human body; the environment-friendly plasticine adhesive can be prepared from the reusable starch in food to reduce the cost and reduce food wastes; the viscosity is proper, so that the plasticine adhesive can not be adhered on a wall or paper to damage the wall or the paper; the residue on hands in an application process is very few; 0.5 g of the environment-friendly plasticine adhesive can bear 800 g of objects; moreover, the proportion of kitchen wastes in solid wastes is the largest in the current cities, therefore, the kitchen waste starch is used for manufacturing the environment-friendly plasticine adhesive to help to reduce the kitchen wastes.

The invention discloses damp-proof anticorrosive adhesive for corrugated cartons. The damp-proof anticorrosive adhesive comprises, by weight, 30-42 parts of corn starch, 15-20 parts of glutinous rice amylopectin, 5-8 parts of potassium sulfate, 10-15.5 parts of sodium hydroxide, 10-15.5 parts of sodium carbonate, 22-35 parts of crataegolic acid, 45-55 parts of water and 14-24 parts of modified oxidizing agents. The damp-proof anticorrosive adhesive has the advantages that the damp-proof anticorrosive adhesive is transparent and is excellent in oxidation property, chelated-state copolymers can be formed after the damp-proof anticorrosive adhesive is oxidized in air, and accordingly the adhesive property can be strengthened; the damp-proof anticorrosive adhesive can be prevented from being diffused when in contact with carton boards, and accordingly hardening of the carton boards can be prevented; the damp-proof anticorrosive adhesive is good in damp-proof property and corrosion resistance, cannot fail when in contact with water, plates can be prevented from being corroded when the damp-proof anticorrosion adhesive is in contact with salt and alkali, and adhesion openings of the cartons can be prevented from cracking.

The invention relates to a high- performance natural non- toxic timber adhesive agent and the preparing method. Said adhesive agent takes water as medium and comprises adhesive agent A and adhesive agent B. said agent A comprises corn starch, amylose, mixing liquid of PVA and PA, acetoacetic ester, butyl acrylate, benzene carbonic acid and citrate, and after second- time grafting and ploymerization, acetylization modification and several- hour stirring under a certain temperature, it is can be got; agent B comprises mixing liquid of PVA and PA, lithium metasilicate, VAC, butyl acrylate, A- 171, OP- 10, and butyl benzoate, and after several- hour stirring under a certain temperature, it is can be got; dispensing agent A and agent B properly and the final product can be got. The adhesive agent is characterized by non- toxic, high strenght, water- proof, antifreezing, stable coagulation. The invention is characterized by nolve idea, regular process, easy operation, low cost, no pollution, and suitability for industrial production. The timber adhesive agent is suited to be used for integration sheet material, finger- joint sheet material, normal adhesive pressing, furniture and instrument, and so on.

The invention belongs to the field of adhesives, and discloses preparation and application of an environment-friendly flame-retardant adhesive for cartons. The preparation method of the flame-retardant adhesive comprises the following steps: adding high amylose into a calcium chloride solution, uniformly stirring, and heating to obtain a transparent colloidal fluid; and adding glycerol into the transparent colloidal fluid, carrying out heat preservation, stirring and blending, and cooling to obtain the green and environment-friendly flame-retardant adhesive for the carton. The high amylose is natural starch with the high amylose content of more than 50% in starch. The environment-friendly flame-retardant adhesive for the carton is prepared by creatively adopting the high-amylose starch and the glycerol as raw materials, and the flame-retardant adhesive for the carton has flame retardance and can prevent fire disasters while meeting the requirement of carton adhesion.

The invention relates to phenolic resin plywood and particularly relates to phenolic resin plywood glue, belonging to the technical field of chemical industry. Phenolic resin, amylum and a filling agent are provided in a formula of the phenolic resin plywood glue, wherein the molecule of amylopectin is generally heavier and more easily dispersed in a water solution to form high viscosity so as to have better stability; and the water loss of the amylopectin is easier than that of amylose under a pressurization condition. Therefore, the higher the content of the amylopectin is, the larger the branch structure part is, so that the phenolic resin plywood glue is suitable for being used as phenolic resin glue for making plywood.

The invention relates to a modified starch-based adhesive for a high-speed cigarette making machine. The modified starch-based adhesive comprises, by weight, 10%-80% of urea modification waxiness corn starch and / or a derivative of the urea modification waxiness corn starch, 10%-80% of degraded waxiness corn starch and / or a derivative of the degraded waxiness corn starch, 2%-20% of modified tamarindus powder and a corrosion remover.

The invention relates to an environmental protection adhesive, and belongs to the high-molecular chemical field. The main components of the adhesive comprise PVA, sweet rice flour, branched chain starch maize, oxalic acid, aqueous phenolic resins, coupling agents, OP-10, a filling material and water. The environmental protection adhesive contains no formaldehyde, is green and non-toxic and meets the E0-grade standard fully, the bonding intensity meets the national requirements, the application environments are widened, and the long-term problem of practical application of an environmental protection adhesive is solved.

The invention provides a phenol-formaldehyde condensation product binding material. The binding material is prepared by the following raw materials according to a proportion: a phenol-formaldehyde condensation product, silicon carbide micro powder, amylose, glucan and graphene oxide micro powder. The phenol-formaldehyde condensation product has a large adhesion, according to the formula, silicon carbide micro powder and amylase are added as filling materials, and the prepared condensation product has a higher binding performance.

The invention relates to the use of a native or modified leguminous starch for producing an adhesive labeling composition. Said leguminous starch has an amylose content ranging between 25 and 60 percent by weight (dry / dry) and can be embodied as pea starch, especially pea starch having an amylose content of at least 30 percent but less than 50 percent by weight. The adhesive composition can advantageously be used for labeling glass or plastic bottles and can contain another natural polysaccharide polymer or protein polymer in addition to the leguminous starch, for example another native or modified leguminous or non-leguminous starch, particularly a starch having an amylopectin content of at least 80 percent by weight (dry / dry). The use of a leguminous starch makes it possible to obtain labeling adhesives, optionally highly dry (> 40 %) substances, which have excellent characteristics regarding stability during storage, rheology, and water resistance.

The invention relates to the use of a native or modified leguminous starch for producing an adhesive labeling composition. Said leguminous starch has an amylose content ranging between 25 and 60 percent by weight (dry / dry) and can be embodied as pea starch, especially pea starch having an amylose content of at least 30 percent but less than 50 percent by weight. The adhesive composition can advantageously be used for labeling glass or plastic bottles and can contain another natural polysaccharide polymer or protein polymer in addition to the leguminous starch, for example another native or modified leguminous or non-leguminous starch, particularly a starch having an amylopectin content of at least 80 percent by weight (dry / dry). The use of a leguminous starch makes it possible to obtain labeling adhesives, optionally highly dry (>40%) substances, which have excellent characteristics regarding stability during storage, rheology, and water resistance.

The invention provides a method for preparing a binder precursor, the method comprising the steps of: i) mixing (A) fungi or glucan and (B) starch with an alkaline agent in the presence of an aqueous solvent system to form an alkaline composition; ii) mixing the alkaline composition with an acidic agent to form a mixture; and iii) drying the mixture and forming a powder therefrom, so as to form a powdered binder precursor.

The invention provides for an adhesive composition that can both be used as melt adhesive composition and as drying adhesive composition. Such an adhesive composition comprises a thermoreversible gelling starch, a bonding starch and a plasticizer.

The invention provides a degradable water-soluble label material and a preparation method thereof. The degradable water-soluble label material comprises a modified polylactic acid film, soluble glue and release backing paper from top to bottom, the modified polylactic acid film comprises the following components: polylactic acid, modified plant cellulose fibers, polyethylene wax, and sodium stearate; wherein the modified plant cellulose fibers are plant cellulose fibers processed by hydrogen peroxide; and the preparation method of the soluble glue comprises the following steps: adding amylose,polyvinyl acetate and polyvinyl alcohol into water, adding calcium chloride, and heating to 120 DEG C until the volume density reaches 1.02-1.05 g / cm<3>.

Adhesive compositions have properties that make them particularly well suited for recyclable corrugated boards for use in transporting and storing perishable foods such as fresh and frozen produce, seafood and meats together with ice, or under refrigeration.

The invention relates to an environment-friendly adhesive, and belongs to the field of high polymer chemistry. The environment-friendly adhesive comprises the main components of PVA, glutinous rice flour, branched corn starch, oxalic acid, water-based phenolic resin, a coupling agent, OP-10, a filler and water. The environment-friendly adhesive does not contain formaldehyde, is green and nontoxic and completely reaches the standard of E0 grade; the bonding strength reaches the requirements specified by the state; the application environment is expanded; and the long-term problem of practical application of the environment-friendly adhesive is solved.