34 results about "Ethyl alpha-cyanoacrylate" patented technology

The invention provides an adhesive for soft tissues and a preparation method of the adhesive. The adhesive comprises the following components: alpha-cyanoacrylate, n-butyl-cyanoacrylate, octyl-alpha-cyanoacrylate, ethyl alpha-cyanoacrylate, gelatin, chitosan, hydroquinone, rosin resin, sulfur dioxide and deionized water. The preparation method comprises the following steps: weighing the raw materials in parts by weight; sequentially adding the raw materials into a container, heating to be 60-80 DEG C, and stirring till completely dissolving, wherein the solution is transparent; uniformly irradiating the obtained transparent solution in gamma rays for 36-72 hours to obtain the adhesive for soft tissues. The adhesive for soft tissues is high in bonding strength, the allergy tests of intracutaneous irritation test boxes are qualified, the irritation to organism tissues is small, and the requirement on medical adhesives used in clinical applications is met.

The present invention discloses the new use of ethyl alpha-cyanoacrylate in preparing adhesive for treating hernia. Using the adhesive of the present invention in treating hernia needs no operation and bandaging and makes the patient no pain.

The invention relates to a method for gluing a hair elastic ring. The method comprises the following steps of: 1) rinsing the elastic band provided with an ornament layer on the outer layer of a rubber band by using 5 to 10 weight percent aqueous solution of sodium chloride, then cleaning the rinsed elastic band by using 1 to 5 weight percent polyvinyl alcohol or by using 5 to 25 weight percent of triethanolamine, and drying the cleaned elastic band at room temperature; 2) cutting the elastic band with an elastic material thermal cutting machine, performing a circle of ironing on a cutting position for the elastic band by using a heating cutter at the temperature of 200 to 300 DEG C in a twist way, leaving a pressing mark on the ornament layer of the elastic band and performing cutting atthe pressing mark by using a cutter; and 3) wetting two cross sections of the elastic band by spraying 60 to 85 weight percent alcohol, coating glue containing alpha-ethyl cyanoacrylate on the two cross sections and jointing and bonding the two cross sections to form the hair elastic ring. The method for gluing the hair elastic ring discards the conventional way for connecting the elastic band bya metal connecting piece, so that the hair elastic ring becomes a hair ornament which is safe and environmentally-friendly and difficult to be broken and has nice appearance.

The invention discloses a plastic adhesive. The adhesive is prepared in steps as follows: a, asphalt and n-heptane are mixed, treated in an airtight reaction kettle at the temperature of 100-150 DEG C for 1-12 h and filtered, and filtrate is obtained; b, the filtrate is dried in the nitrogen fluid state at the temperature of 100-150 DEG C for 1-10 h, solids are obtained, finely ground, sieved by a 50-120-mesh sieve and then dispersed in ethyl alpha cyanoacrylate to be stirred for 10-30 min, ethyl carbamate glycol, 2,4,4-trimethyl-1,6-hexamethylene diamine, ethylene carbonate, dichloro-hexylidene diisocyanate, melamino-formaldehyde resin, epoxy resin, vinyl chloride-vinyl acetate resin, an expanding agent, desulfurized gypsum and a curing agent are added, and the plastic adhesive is obtained. The provided plastic adhesive can powerfully bond a wood material and plastic, and no harmful organic substances are produced.

The invention provides a method for sealing a tenon on an instrument shell. According to the method, a quick dry adhesive with Alpha-ethyl cyanoacrylate as a main component is applied into a gap between a flight parameter recorder shell and the tenon so as to achieve the aims of sealing and preventing liquid wax from flowing out. After the method is adopted, even if burning happens, since an adhesive layer in the gap is rapidly carbonized to form a solid blockage, the sealing function does not fail, so that electronic elements are effectively protected; the adhesive layer is not corroded when being soaked in seawater, therefore the protection time is prolonged and consequently the precious time is prolonged for search and rescue work.

The invention provides a preparation dedicated binder of a microbeam analysis standard sample. The preparation dedicated binder of a microbeam analysis standard sample comprises components with the following volume fraction: alpha-ethyl cyanoacrylate, the volume fraction of the alpha-ethyl cyanoacrylate is more than 50%, tackifier, the volume fraction of the tackifier is 1-5%; stabilizer, the volume fraction of the stabilizer is 1-5%, flexibilizer, the volume fraction of the flexibilizer is 1-5%, and polymerization inhibitor, the volume fraction of the polymerization inhibitor is 1-5%. Simultaneously, the invention further provides a blending method of the preparation dedicated binder of a microbeam analysis standard sample, a throwing sequence is as following: the alpha- ethyl cyanoacrylate, the polymerization inhibitor, the stabilizer, the flexibilizer, and the tackifier, blended using time is controlled within one tenth of a binder solidification time. The preparation dedicated binder of the microbeam analysis standard sample possesses appropriate liquidity, solidification speed, and good electroconductibility in the meantime, solves an embedding problem of the microbeam analysis standard sample in the preparation process, so that an embedding rate of finished products is effectively improved.

The invention discloses a quick blocking agent. The blocking agent comprises a component A and a component B in a ratio of 37: 62, wherein the component A comprises 80 to 100 weight parts of alpha-cyan ethyl acrylate and 5 weight parts of fumed silica; and the component B comprises 2.5 weight parts of zinc oxide, 1 weight part of aniline anti-aging agent, 2 weight parts of magnesium oxide, 40 weight parts of ethyl acetate, 20 weight parts of gasoline, 20 weight parts of chloroprene rubber, 10 weight parts of ethane solution and 5 weight parts of carborundum. The invention also discloses a preparation method for the quick blocking agent. The component A and the component B are quickly mixed and stirred in a ratio of 37: 62 and placed at the position to be blocked, and the blocking agent can be quickly cured for blocking; and the blocking agent has high adhesive strength, and completely can meet the requirement of quick and effective blocking operation.

The invention provides a silver conductive adhesive, comprising a basic resin, a curing agent, a curing accelerator and a conductive material, wherein the basic resin is epoxy resin, the curing agent is binary aliphatic ether amine and versamid, the curing accelerator is 2,4,6-tri-(dimethylaminomethyl)-phenol, and the conductive material is silver powder. The silver conductive adhesive is characterized by furthering comprising alpha-cyan ethyl acrylate and polyether. The invention further provides a preparation method and application of the silver conductive adhesive. The silver conductive adhesive prepared in the invention can be completely cured within 5-15min at room temperature (25 DEG C) and has good cohesiveness and conductivity.