517results about "Wax adhesives" patented technology

A hot melt adhesive composition that includes a non functionalized amorphous poly alpha olefin polymer, a second polymer selected from the group including polypropylene homopolymers, polypropylene copolymers and combinations there of, a functionalized wax and a second wax.

The invention relates to novel adhesive alpha-olefin inter-polymers which are largely amorphous and have a Theological behavior that makes them suitable for adhesive use, both without and with minimzed amounts of tackifying resins. Specifically, the invention poly-alpha olefin inter-polymer may be composed of A) from 60 to 94 % of units derived from one alpha mono-olefin having from 3 to 6 carbon atoms and B) from 6 to 40 mol % of units derived from one or more other mono-olefins having from 4 to 10 carbon atoms and at least one carbon atom more than A); and C) optionally from 0 to 10 mol % of units derived from another copolymerizable unsaturated hydrocarbon, different from A) and B); the diad distribution of component A in the polymer as determined by 13C NMR as described herein showing a ratio of experimentally determined diad distribution over the calculated Bernoullian diad distribution of less than 1.07; and the storage modulus G' of said polymer, determined upon cooling as described herein, intersecting a value of 3.105 Pa at a temperature of less than 85 ° C. The invention also describes polymerization processes suitable for the manufacture of these adhesive alpha-olefin inter-polymers.

The invention discloses a hot melt adhesive used for automotive interiors, and a preparation method of the hot melt adhesive. The hot melt adhesive used for automotive interiors is characterized by comprising a proportion of paraffin, polyethylene wax, a thermoplastic elastic body SBS, random polyolefin, polyethylene vinyl acetate, C5 petroleum resin, rosin pentaerythritol ester, antioxygen, coupling agent and filler. The preparation method comprising the following steps: heating a stirring kettle to 140 to 160 DEG C, and adding the paraffin and the polyethylene wax; adding the thermoplastic elastic body SBS, vacuum-pumping and keeping warm, adding HMW(high molecular weight) random polyolefin I, HMW random polyolefin II and the antioxygen; adding the coupling agent and the filler; cooling, and adding polyethylene vinyl acetate I and polyethylene vinyl acetate II; cooling and adding the C5 petroleum resin; adding the rosin pentaerythritol ester and keeping warm; and emptying the stirring kettle, pressurizing, discharging and forming. No pollution or poison is produced during the production process of the hot melt adhesive; and the hot melt adhesive has the advantages of high adhesion strength, long opening time, good temperature resistance, strong ageing resistance, good tenacity, strong waterproofness and the like.

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.

Regarding the scavenger for aldehyde(s) used at the time of manufacturing a woody panel using woody materials and formaldehyde-based binders, the scavenger for aldehyde(s) without lowering of trapping properly even when a surface of said woody panel is sanded and having an excellent trapping property of trapping formaldehyde is provided. Further, the method of manufacturing a woody panel using a scavenger for aldehyde(s) and a woody panel are provided.

At least one kind of compound for trapping aldehyde(s) being solid at a room temperature is included and said compound for trapping aldehyde(s) is defined to be a powdery scavenger for aldehyde(s) having a property of generating acidic gas, in particular, sulfurous acid gas by heating and said compound for trapping aldehyde(s) is added to a binder or woody materials followed by a hot press, thereby manufacturing a woody panel.

Hot melt adhesive that is applied at or below 300° F. and that can withstand temperatures when bonded and stressed that are within 100° F. of their application temperature.

The present invention includes compositions relating to a hot melt adhesive that includes a copolymer of butene-1, a wax, and a tackifying resin. The present invention further relates to adhesives initially exhibiting adhesion properties and subsequently non-adhesion qualities. Methods of using these adhesives are also part of the claimed invention.

The invention provides a transfer tape which comprises an adhesive layer with the thickness of 80-800 [mu]m, wherein raw materials for preparation of the adhesive layer comprises the following components in parts by weight: 40-50 parts of rubber elastomer, 50-60 parts of tackifying resin, 0-5 parts of a softening agent, 0-5 parts of a plasticizing agent, 1-10 parts of an antioxygen and 0-5 parts of color paste. The transfer tape has the characteristics of being large in sticking strength and long in fixing of the common double-sided adhesive tape, and can be moved only by being pulled out by 0-60 degree when an electronic product is disassembled in maintenance, and so that not only damage to electronic devices of battery and the like in maintenance is avoided, but also great convenience is brought to maintenance personnel.

The invention discloses water-based paper and plastic laminating/peelable adhesive and a method for manufacturing the same. The water-based paper and plastic laminating/peelable adhesive comprises, by mass, 35-45 parts of wax emulsion, 45-55 parts of water-based polyurethane emulsion, 1-20 parts of tackifying resin, 1-5 parts of additives, 1-5 parts of coupling agents, 0.2-0.5 part of defoamers and 0.2-0.5 part of thickeners. The water-based paper and plastic laminating/peelable adhesive and the method have the advantages that the wax emulsion, the water-based polyurethane emulsion, the additives, the tackifying resin, the coupling agents, the thickeners and the defoamers are compounded with one another to finally manufacture the water-based paper and plastic laminating/peelable adhesive, the water-based paper and plastic laminating/peelable adhesive is high-temperature-resistant and is high in initial adhesion, permanent adhesion and peel strength when used for laminating paper and plastics, the paper cannot be torn by an adhesion surface of a film when separated from the plastics, and is prevented from being damaged, and the adhesion surface is not sticky after the paper is separated from the plastics.

The present invention is directed to adhesives suitable for application using a hot melt process at a relatively low temperature in the range of about 110° C. to about 130° C. Such adhesives exhibit desirable viscoelastic properties and are suitable for bonding an elastic attachment in the manufacture of disposable articles, such as disposable diapers.

A novel hot melt adhesive for bonding labels on plastic bottles is described. The adhesive comprises a blend of a styrenic block copolymer, an ethylene vinyl acetate copolymer, a tackifying resin, petrolatum and optionally a wax. The use of petrolatum instead of mineral oil provides for better elevated temperature resistance than traditional formulations.

The invention discloses a method for preparing a gradient-structure copper radiating rib for electronic elements, and belongs to the technical field of powder metallurgy. The gradient-structure copper radiating rib for the electronic elements comprises a radiating part of the radiating rib and a base of the radiating rib, wherein the radiating part of the radiating rib is prepared by adopting the technology of metal powder injection molding, and the base of the radiating rib is prepared by adopting a machining method; the radiating part of the radiating rib and the base of the radiating rib are welded together to prepare the gradient-structure copper radiating rib for the electronic elements. The radiating part of the radiating rib prepared by adopting the method is made of a porous structure material of which the relative density is 50 to 96 percent, which is favorable for improving the superficial area and the radiating efficiency of the radiating rib obviously. The radiating efficiency of the gradient-structure copper radiating rib is 10 to 40 percent higher than that of a radiating rib of which the relative density is 99 percent, and the gradient-structure copper radiating rib fully embodies the high thermal conductivity of copper.

The invention discloses an adhesive for powder injection forming and a preparation method thereof. The adhesive comprises the following components in percentage by mass: 5-10% of liquid paraffin, 5-15% of naphthalene, 15-20% of solid paraffin, 10-20% of microcrystalline wax, 15-20% of carnauba wax, 15-30% of first high-molecular polymer, 10-20% of second high-molecular polymer and 1-5% of stearic acid. The first high-molecular polymer and second high-molecular polymer are selected from any two of polyethylene, polypropylene, polyacrylate and acrylonitrile-butadiene-styrene copolymer. The method comprises the following steps: after feeding materials of the adhesive, injecting a green compact, putting in a sintering furnace, and carrying out hot removal on the green compact in the furnace by heating to 600 DEG C at the rate of 2-5 DEG C/minute, thereby completely removing the adhesive; and heating for sintering according to the sintering technique, thereby obtaining the finished product. The adhesive has the advantages of simple and controllable degreasing process and high degreasing efficiency; and the degreasing process can not influence the quality of the green compact, and is clean and environment-friendly.

The invention discloses a plastic-based binding agent and a method for preparing powder injection molding green bodies through the same. The plastic-based binding agent is prepared from, by weight, 75-88% of polyoxymethylene, 4-10% of modified polylactic resin, 3-10% of microcrystalline wax, 2-8% of pentaerythritol stearate, 1-10% of sebacic acid dibutyl ester and 0.5-2% of an antioxidant. The method for preparing powder injection molding green bodies through the plastic-based binding agent comprises the steps that metal or ceramic powder is preheated and stirred; the binding agent is added and banbury mixing is performed; after banbury mixing is performed, extrusion and pelleting are performed to obtain granular feed; injection molding of the granular feed is performed; green bodies obtained through injection molding are catalyzed and degreased through nitric acid, and the powder injection molding degreased green bodies are obtained. The adopted plastic-based binding agent is low in viscosity and good in flowing performance during injection molding, and the good mold filling capacity and the good green body stability are achieved; the plastic-based binding agent can be widely applied to the powder injection molding industry, and the plastic-based binding agent is particularly applicable to production of parts with the large draw ratio, small wall thickness, micro size and complex three-dimensional shapes.

In some examples, one or more metal-containing catalysts and one or more waxes can be mixed or otherwise combined to produce an encapsulated catalyst composition. The wax can be at least partially coated on the metal-containing catalyst. A mixture of water and the wax can be agitated or otherwise mixed, and the metal-containing catalyst can be added to or otherwise combined with the water and wax mixture to produce a wax emulsified catalyst. A plurality of lignocellulose substrates, one or more oxidants, and the encapsulated catalyst composition can be mixed or otherwise combined to produce a lignocellulose binder mixture. The lignocellulose binder mixture can be heated to produce a composite product.

The invention discloses a rapid packing hot melt adhesive and a preparation method thereof. The hot melt adhesive is used in a high speed sizing machine production line for straws and box sealing in food and beverage industrial packaging. The packing hot melt adhesive can be cured in short time, and has strong adhesive property and better tear resistance, thermal resistance, antioxidation, ageing resistance and ultraviolet resistance; furthermore, the hot melt adhesive product is applicable to wide temperature range, and the preparation method is simple, does not discharge pollutants or dust, does not generate pungent smell, and has good environmental protection performance.

The present invention provides an aldehyde capture material to be used in producing plywood by using veneers and a formaldehyde adhesive, which is not lowered in the capturing power even when the resulting plywood is subjected to surface grinding and which exerts a high capturing power for formaldehyde; a process for the production of plywood with the material; and plywood obtained by the process. [MEANS FOR SOLVING PROBLEMS] A powdery aldehyde capture material containing at least one aldehyde-capturing compound which is solid at ordinary temperatures and has the property of generating an acid gas such as sulfurous acid gas on being heated; and a process for production of plywood which comprises incorporating the above aldehyde capture material into an adhesive or veneers and producing plywood through hot pressing by the use of the adhesive and the veneers.

Hot melt adhesive compositions suitable for a variety of applications, especially in nonwoven disposable articles, are prepared by blending various adhesive components with a bacteriostat. The bacteriostat is incorporated into the adhesive compositions in sufficient amounts to inhibit the growth of various microorganisms, particularly bacteria. The preferred bacteriostat is triclosan in amounts of 0.0 1 % to 5 % by weight.

The invention discloses a waterproof hot melt adhesive and a preparation method thereof. The waterproof hot melt adhesive is composed of the following raw materials by weight part: 50-60 of an ethylene-vinyl acetate copolymer, 20-30 of microcrystalline wax, 10-15 of low density polyethylene (LDPE), 25-30 of a polyvinyl acetate emulsion, 14-16 of petroleum wax, 28-32 of mixed powder, 0.7-0.9 of an antioxidant 168, 1.2-1.5 of vinyltris(beta-methoxyethoxy)silane, 0.8-1.2 of sodium lauryl sulfate, and 2.5-3.5 of dipropyl ethanolamine. The hot melt adhesive provided in the invention has a reasonable formula and a simple preparation method. The adding of the petroleum wax and microcrystalline wax in the raw materials raises the softening point temperature of the hot melt adhesive. At the same time, the mixed powder and the polyvinyl acetate emulsion are added to make the hot melt adhesive have increased bonding strength and good fluidity. The waterproof hot melt adhesive disclosed in the invention has the advantages of environmental protection, safety, weatherability and low cost.

The invention discloses sprayable environment-friendly hot melt glue and a preparation method thereof. The spray glue mainly comprises the following components in percentage by weight: 12% of EVA thermoplastic resin with melting index 30, 18% of EVA thermoplastic resin with melting index 65, 10% of water-white rosin, 12% of water-white hydrogenated rosin, 8% of C9 petroleum resin, 14.5% of white tackifying resin, 5% of polyisobutene and 8% of microcrystalline wax. The sprayable environment-friendly hot melt glue disclosed by the invention has comprehensive advantages in multiple aspects such as environmental friendliness and no toxin, no organic solvent, zero VOC, no heavy metal or odor, good initial viscous force, high bonding strength, high permanent adhesion, heat and aging resistance, high drying speed, large spray area of unit weight (saving glue) and efficient and quick spraying construction, and has the advantages of complete environmental friendliness, improvement of the operation and construction environment, low cost, no odor, fire safety and the like, and is widely applied to the upholstered furniture industries such as sofa, swivel chairs, mattress, pillows and screens and especially applicable to the European and American environment-friendly high-grade exported products and children products.

The invention relates to a polyethylene-vinyl acetate hot-melt adhesive and a preparation method thereof. The preparation method comprises the following steps: mixing 1/2-2/3 of polyethylene-vinyl acetate with 1/2-2/3 of thermoplastic polyurethanes by weight, heating the mixture, adding 0-3 parts of paraffin and 0.5-1 part of antioxidants into the heated mixture, adding the remaining polyethylene-vinyl acetate and the remaining thermoplastic polyurethanes after the added components are melted completely, and holding a temperature to be greater than or equal to 130 DEG C; and adding 5-15 parts of PP-g-MAH, holding the temperature to be greater than or equal to 120 DEG C, adding pentaerythritol rosin ester and a C5 hydrogenation petroleum resin, reducing the temperature to be 90-110 DEG C, adding an anti-aging agent after the pentaerythritol rosin ester and the C5 hydrogenation petroleum resin are melted completely, holding the temperature and stirring the mixture for 10-30 minutes to obtain the hot-melt adhesive. The polyethylene-vinyl acetate hot-melt adhesive provided by the invention is high in strength and good in toughness, and does not cause secondary pollution to the environment. An automobile-used hot-melt adhesive prepared from the adhesive has high adhesion ability and high chemical stability, and can be used in the field of automobile interior adhesion.

The invention provides a hot-melt pressure sensitive adhesive for waterproof rolls, and a preparation method thereof, and belongs to the technical field of adhesives. The problems of poor heat resistance and poor adhesion to a concrete substrate of existing hot-melt pressure sensitive adhesive for waterproof rolls are solved. The hot-melt pressure sensitive adhesive for waterproof rolls comprises5-30 wt% of a thermoplastic elastomer, 5-15 wt% of a saturated thermoplastic elastomer, 25-50 wt% of tackifying resin, 15-40 wt% of a plasticizer, 0.5-5 wt% of an silicone additive and 0.5-5 wt% of astabilizer, wherein the silicone additive is prepared by a controlled condensation reaction of different silane monomers. The hot-melt pressure sensitive adhesive for waterproof rolls has the advantages of good heat resistance and good adhesion to the concrete substrate, and the preparation method of the pressure sensitive adhesive has the advantages of simple preparation process, low cost and good economic values.