7 results about "Methyl acrylate" patented technology

A multi-layer packaging film is provided having at least four layers arranged in sequence comprising: (1) a heat-sealing first layer comprising at least 50% by weight of a copolymer of propene, and at least one α-olefin selected from the group consisting of ethylene, butene-1, methylpentene-1, hexene-1, octene-1, decene-1 and mixtures thereof, said copolymer having a propene content of at least 60 wt. %, a Tm between about 100° C. and about 145° C., a Mw/Mn of between 1 and 5, and n-hexane extractables of less than 4 wt. %; (2) second and fourth layers each comprising (a) at least 10 wt. % of a first copolymer of ethylene and at least one C₄-C₈ α-olefin, said copolymer having a density of from 0.900 to 0.915 g/cm³ and a melt index of less than 2 dg/min., (b) at least 10 wt. % of a second copolymer of ethylene with from 4 to 18 wt. % of a vinyl ester, alkyl acrylate, acrylic or methacrylic acid, and (c) from 0 to 60 wt. % of a third copolymer of ethylene and at least one C₃-C₈ α-olefin having a density less than 0.900 g/cm³ and a melting point less of between 65-98° C.; and (3) a third layer comprising at least 80% by weight of at least one copolymer of vinylidene chloride with from 2-20 wt. % (based on said copolymer) of vinyl chloride or methyl acrylate.

The invention discloses an acrylic acid series copolymer-based adhesive sheet for a fifth generation (5G) antenna manufacturing process. The adhesive sheet includes an acrylic acid series copolymer and the acrylic acid series copolymer is composed of the following components according to parts by weight: 50-70 parts of iso-octyl acrylate, 10-20 parts of ethyl acrylate, 1-5 parts of hydroxyethyl acrylate, 2-6 parts of acryloyl morpholine, 3-6 parts of methyl acrylate, 10-20 parts of methoxy polyethylene glycol methacrylate, 0.1-0.5 part of azodiisobutyronitrile, and 150-200 parts of a solvent.The acrylic acid series copolymer of the invention can effectively improve the bonding performance and temperature resistance of the adhesive sheet to components of a 5G antenna and well control the high-speed stripping forces before and after undergoing high temperature and high humidity and has no pollution to an object to which the adhesive sheet is adhered.

The invention discloses a novel moisture-curing flame-retardant polyurethane hot melt adhesive and a preparation method thereof. The novel moisture-curing flame-retardant polyurethane hot melt adhesive is characterized by being prepared from 1-20 parts of polyether diols, 1-35 parts of liquid polyester diols, 1-40 parts of flame-retardant polyether glycol, 1-35 parts of crystalline polyester diols, 1-35 parts of an isocyanate-containing modified polyacrylic acid fluorosilicone copolymer, 1-50 parts of isocyanate, 0.01-1 part of a catalyst, 0.01-1 part of an antioxidant and 0.1-2 parts of a silane coupling agent. The isocyanate-containing modified polyacrylic acid fluorosilicone copolymer is synthesized firstly, the chemical structure of the copolymer is poly(hexafluorobutyl acrylate-random-monomethacryloxypropyl terminated polydimethylsiloxanes-random-methyl acrylate-random-isocyanatoethyl methacrylate, the copolymer is added to a polyurethane prepolymer and subjected to condensation polymerization, a fluorosilicone-containing acrylate copolymer chain segment and a reaction type flame retardant are introduced and have an efficient synergistic effect, and therefore, comprehensive chemical resistance, oil resistance, water resistance and flame retardance are improved.

The invention provides a preparation method of picoxystrobin. The preparation method includes the following steps: reacting an alkali metal salt of 2-hydroxy-6-trifluoromethylpyridine with (E)-3-methoxy-2-(2-halomethylphenyl)-2-methyl acrylate in a solvent to obtain the picoxystrobin, wherein the alkali metal salt of the 2-hydroxy-6-trifluoromethylpyridine is prepared by a hydrolysis reaction of 2-halo-6-trifluoromethylpyridine and alkali metal hydroxide. The preparation method provided by the invention saves the use of an acid binding agent in a condensation step and avoids tedious steps suchas acidification and drying in the hydrolysis reaction. After two steps of separation, the total yield is over 82%, and the product content is 97%-98%. A by-product is only a single inorganic salt, which reduces the equipment cost of solvent recovery and saves the use of acid and alkali, thereby reducing the material cost. The preparation method is suitable for industrial production and can generate high economic benefit.

The invention discloses a lotion with moisturizing function. The raw materials are divided according to the weight percentage of the composition, including: 30%-40% of cucumber extract, 15%-25% of methyl trichlorosilane, dimethylformamide 5%~16%, ferrous sulfate 3%~8%, triethanolamine 0.8%~1.2%, collagen 0.4%~0.7%, glycerin 0.1%~0.5%, methyl acrylate 0.04%~0.09%, essence 0.02% ~0.05%, fatty acid 0.01%~0.06%, and the rest is water.

The invention discloses a preparation method of modified polyacrylic resin. The preparation method comprises the following steps of preparing a solution A: uniformly mixing acrylic acid, methyl acrylate and manuka essential oil according to a volume ratio of 1: 10-15: 5-10, preparing a B1 solution from 18-25g/L of ammonium persulfate and 25-35g/L of chitosan hydrochloride, preparing 22-28g/L of lauryl sodium sulfate which is marked as a B2 solution, uniformly mixing nano-silver, nano-titanium dioxide and n-butyl acrylate according to a weight ratio of (0.4-0.6): (0.2-0.3): (20-25) to obtain asolution C, adding 12-15 parts by volume of the solution C into a reaction kettle, adding 6-8 parts by volume of the solution A and 15-20 parts by volume of the solution B2, and uniformly mixing, raising the temperature to 70 to 80 DEG C, stirring and dropwise adding 3-5 parts by volume of B1 solution, and heating to 80-85 DEG C, and keeping the temperature for 2-3 hours to obtain the modified polyacrylic resin. The invention further discloses the prepared modified polyacrylic resin. The modified polyacrylic resin is good in antibacterial property, high in elongation at break, high in tensilestrength and good in puncture resistance.