132results about How to "Excellent retort resistance" patented technology

The invention discloses a low viscosity solvent-free polyurethane laminating adhesive, which includes component A and component B. The component A is an isocyanate terminated compound, and the component B is a hydroxyl terminated compound. The component A and the component B are mixed according to that the isocyanate terminated group and the hydroxyl are in a mole ratio of 1.3-1.75, thus obtaining the bicomponent polyurethane laminating adhesive. The invention also discloses a preparation method of the low viscosity solvent-free polyurethane laminating adhesive. The low viscosity solvent-free polyurethane laminating adhesive prepared by the invention has the advantages of low viscosity, fast curing speed, high peel strength and resistance to 100DEG C cooking.

The invention provides a heat-resistant solvent-free two-component polyurethane cooking adhesive. Through introducing a bisphenol A structure polyether and synthesizing appropriate polyester polyol, the temperature resistance and the medium resistance of the adhesive are improved, and the problems of low peeling strength and easiness in delaminating of a common solvent-free adhesive after cooking are solved. The heat-resistant solvent-free two-component polyurethane cooking adhesive is formed by an adhesive A and an adhesive B, wherein the adhesive A is formed by polyester polyol, liquidated-MDI and polyether polyol through an reaction; the adhesive B is formed by bisphenol A structure-contained polyether polyol, a coupling agent and castor oil; the matching ratio of the adhesive A and the adhesive B is 10 to (4 to 5).

The invention provides an aluminium foil sealing film and a preparation method thereof and belongs to the technical field of plastic packaging. The aluminium foil sealing film comprises a protective layer, a separation layer and a heat-seal layer, wherein the protective layer is a gloss oil layer or a PET (Polyethylene Terephthalate) film layer; the separation layer is an aluminium foil layer; and the heat-seal layer comprises the materials as follows: 15 to 25 wt% of polybutene, 25 to 35 wt% of ethylene-propylene copolymer and 40 to 60 wt% of HDPE (high-density polyethylene). As a sealing film for the bottle mouth of a polypropylene plastic bottle, the aluminium foil sealing film provided by the invention has the excellent properties of cooking resistance and easiness for uncovering, and when the cooking-resistant temperature is 121 DEG C, the sealing film is unchanged in color and is not stratified. The opening force is 5 to 25 N after the sealing film and the polypropylene bottle are heat-sealed at 200 DEG C, and the heat-seal strength of a heat-seal strip with the width of 15 mm is 5 to 25 N, which shows that the aluminium foil sealing film has the excellent properties of cooking resistance and easiness for uncovering at the same time.

The object of the present invention is to provide a photosensitive composition, a method for forming a pattern, and a permanent pattern. The flexibility is greatly improved, and it is suitable for the manufacture of flexible printed circuit boards. Therefore, the photosensitive composition contains at least (A) a polyurethane resin having a carboxyl group, (B) a polymerizable compound, (C) a photopolymerization initiator, and (D) a thermal crosslinking agent, and the (A) polyurethane resin having a carboxyl group The resin is preferably a form obtained by reacting a diisocyanate compound represented by the following structural formula (I) and a diol compound represented by either the following structural formula (II) or the following structural formula (III).

The invention discloses water-based high-barrier coating liquid and a high-barrier film thereof. The coating liquid is prepared from a water-soluble polymer, nanometer oxide, a coupling agent and a delaying cross-linking agent, and is specifically prepared from the following components in percentage by weight: 0.5-15% of water-soluble polymer, 0.1-15% of nanometer oxide, 0.01-5% of a coupling agent, 0.01-3% of a delaying cross-linking agent, 0.01-1.5% of an auxiliary agent and 60.5-99.37% of a solvent, wherein the water-soluble polymer is a water-soluble polymer with hydroxyl, the nanometer oxide is prepared by carrying out hydrolysis-condensation on metal alkoxide by adopting a sol-gel method under an acid catalysis condition, and the coupling agent is an organic siloxane coupling agent.The prepared high-barrier coating liquid is excellent in performance and can be used as a barrier layer independently or can be used in combination with an inorganic deposition layer, so that excellent barrier performance can be achieved, and the coating liquid can be used for food packaging, medicine packaging, electronic packaging and the like.

To provide a thermoplastic resin container that contains food or drink subjected to a retort processing for which completion of the retort processing can be confirmed and supervised with simple means without the need of an expensive member or facility, not only whether the temperature of the retort processing is reached but also whether the retort processing is performed as specified can be confirmed, and the consumer also can easily confirm completion of the retort processing of the product. The container is produced by two-stage stretch blow molding of a preform made of a thermoplastic resin in such a manner a part that is not stretched or is insufficiently stretched is formed at a part of the container, and the part that is not stretched or is insufficiently stretched is whitened to form a retort processing completion confirming part by heating in the retort processing after a content is packed and sealed in the container.

The invention relates to a general plastic auto primer and the preparation method thereof, pertaining to the coating technical field. The invention solves the universality of plastic auto primer and is characterized in that the primer comprises the components with certain weight portions, modified thermoplastic acrylic resin of 55-65wt portions, paint of 20-25wt portion, dispersion agent of 0.3-1.0wt portions, flow agent of 0.1-0.3wt portions and solvent of 15-30wt portions. The components are mixed and grinded for preparing the primer. The product of the invention is mainly characterized in that the product is applicable for primer coating of various auto plastic components and for plastic components of different materials, thereby, the product can reduce waste and trouble which are caused by frequent exchange of paint and dramatically improve work efficiency. In addition, the product of the invention has excellent boiling resistance and hot-cold alternation resistance. The product is proved to have better index of pencil hardness, adhesive, impact strength and water resistance, etc. over than the prior product and is expected to replace the prior plastic auto primer product.

The invention discloses a vacuum bag manufacturing method, and further discloses a product obtained by adopting the method. The vacuum bag manufacturing method and the product of the vacuum bag comprise a bag body and a vent valve. The vent valve comprises a valve seat, a valve cover and a cone-shaped soft plug. The method is easy in manufacturing procedure, easy to realize, and capable of being used for quickly manufacturing the vacuum bag product which is good in sealing effect and convenient to use. The vacuum bag product is ingenious and reasonable in structural design. The cone-shaped soft plug and an opening of an accommodating cavity are matched for sealing air, an operator just needs to cover the valve cover to ensure that the cone-shaped soft plug is tightly attached on the opening, and accordingly sealing effects are achieved. The valve cover is plugged out to ensure that air freely enters and leaves the bag body to bring convenience to air pumping and use. Furthermore, a flange is arranged on the opening to further strengthen sealing effects, and articles can be beneficially stored for a long period. A bag opening can be quickly opened or sealed through concave-convex seals. The vacuum bag manufacturing method and the product of the vacuum bag are convenient to use and simple and easy to operate, bring great convenience to the steps of taking and putting the articles and life of people, and facilitate wide promotion and applications.

The invention discloses water-based paint for the surface of a pop-top can and a preparation method thereof, which belongs to the technical field of paint. The paint is prepared by uniformly mixing water-base modified resin, ammonia-base resin, a leveling agent, a thickening agent, ether and deionized water. The prepared water-based paint which is attached on the surface of the pop-top can is good in RCA abrasion resistance (the substrate is no exposed for more than 300 circles at the force of 175g) and high in hardness (more than or equal to 5H); in addition, the pop-top can is also excellent in boiling durability, the paint on the surface of the pop-top can which is boiled for 1h under the condition of 130 DEG C is free from losing brightness, bubbling and stripping.

The invention discloses boiling-resistant aqueous composite ink and a preparation method thereof. The boiling-resistant aqueous composite ink mainly comprises raw materials including aqueous polyurethane resin, a pigment and water, and a surface wetting agent, a wetting dispersing agent and a defoaming agent are additionally added. The preparation method of the boiling-resistant aqueous composite ink comprises the following steps of: firstly, adding partial aqueous polyurethane resin into a stirring reaction kettle; secondly, slowly adding the surface wetting agent, the wetting dispersing agent and partial defoaming agent, and adding the pigment after stirring and dispersing; thirdly, stirring and dispersing at high speed, and grinding after dispersing; fourthly, adding the residual aqueous polyurethane resin and defoaming agent and stirring and dispersing, and adding the water until the required viscosity is obtained through regulation; and at last, stirring, dispersing, filtering and packaging. The boiling-resistant aqueous composite ink, provided by the invention, is prepared by taking the high-performance aqueous polyurethane resin as a connecting material, and has the advantages of good pigment dispersibility, wide use range, lower film forming temperature, better mechanical property of formed film, more uniform particle size distribution and the like, and can be used for soft retort packages.

The present invention relates to a multilayer structure including a base (X) and a layer (Y) stacked on the base (X). The layer (Y) contains a reaction product (D) of an aluminum-containing compound (A) and a phosphorus compound (B), and the reaction product (D) has an average particle diameter of 5 to 70 nm.

The invention relates to a composite film. The composite film is characterized by comprising at least one layer of casting film, at least one layer of blow-molding film and an adhesive layer located between the casting film and the blow-molding film. The invention also relates to a preparation method and application of the composite film.

An object of the present invention is to provide a resin composition excellent in retort resistance at high temperature, gas barrier property, and anti-pinhole property as well as a multi-layer structure using the same. The invention relates to a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and a polyamide-based resin (B), wherein the ethylene-vinyl alcohol copolymer (A) is an ethylene-vinyl alcohol copolymer comprising the following structural unit (1), preferably obtained by saponifying a copolymer of 3,4-diacetoxy-1-butene, a vinyl ester-based monomer, and ethylene:

wherein X is a bonding chain which is an arbitrary bonding chain excluding an ether bond, R1 to R4 each independently represents an arbitrary substituent, and n represents 0 or 1.

The invention relates to the field of water-based ink, and discloses a water-based ink composition, water-based ink resin and a preparation method and application thereof. The water-based ink composition comprises the following components in percent by weight: (1), 20-35wt% of hydroxy-terminated polyamide-ether resin; (2), 5-15wt% of diisocyanate; (3), 2-10wt% of diol; (4), 2-10wt% of diamine sulfonate; (5), 1-6wt% of epoxy alcohol; (6), 45-65wt% of water. The water-based ink resin prepared from the water-based ink composition is good in adhesion and good in printability. After water-based inkprepared from the water-based ink resin is printed onto a packaging substrate, the water-based ink has the advantages of water boiling resistance and steam boiling resistance.

Disclosed is a re-emulsifiable resin powder which is characterized in that the physical properties after being re-emulsified in water are substantially the same as those of the emulsion from which the resin powder is formed. A film formed by using an emulsion obtained by re-emulsifying such a re-emulsifiable resin powder is improved in water resistance. Specifically disclosed is a re-emulsifiable resin powder obtained from an aqueous synthetic resin emulsion which is dispersion-stabilized by a polyvinyl alcohol resin, wherein a hydrophobic monomer having a solubility in water at 20 DEG C of 0.1% or less is contained, as a copolymerizable monomer for constituting the aqueous synthetic resin, in an amount of not less than 30% by weight relative to the total weight of the copolymerizable monomers.