805 results about "Methyl hydroxybenzoate" patented technology

A microbicidal composition containing: (a) 1,2-benzisothiazolin-3-one; and (b) at least one microbicide selected from among benzalkonium chloride, benzethonium chloride, benzyl alcohol, caprylyl glycol, chlorphenesin, 2,2′-dithiobis(N-methylbenzamide), diazolidinyl urea, ethylenediamine tetraacetic acid, ethylparaben, imidazolidinyl urea, methylparaben, phenoxyethanol, linoleamidopropyl PG-dimonium chloride phosphate, cocamidopropyl PG-dimonium chloride phosphate, propylparaben, cis-1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride, dehydroacetic acid or its salts, benzoic acid or its salts, sodium hydroxymethylglycinate and zinc pyrithione.

The invention discloses a full chemical synthesis method for mangiferin aglycones. In a process of full chemical synthesis, the mangiferin aglycones are prepared from 3,4-methyl dihydroxybenzoate serving as an initiative raw material through six chemical reactions and steps. The synthetic process of the full chemical synthesis of the mangiferin aglycones has the advantages of short synthetic routes, mild condition of a synthetic reaction and high yield, and can be used for large-scale production.

The invention discloses a leave-on facial mask with added pearl hydrolysate liposome, prepared by mixing, heating and homogenizing deionized water, pearl hydrolysate liposome, glycerol, butanediol, trimethylglyine, cyclohexasiloxane, isononyl isononanoate, polydimethylsiloxane, acrylic acid (ester) / C10-30 alkyl acrylate crosslinked polymer, triethanolamine, sodium acrylate / dimethyl propylene amine taurine multipolymer, allantoin, methyl hydroxybenzoate, propyl hydroxybenzoate, phenoxyethanol, disodium EDTA (Ethylene Diamine Tetraacetie Acid), hyaluronic acid and essence. The leave-on facial mask with added pearl hydrolysate liposome improves the nourishing effect of the facial mask on the face by effectively utilizing effective components in the pearl hydrolysate liposome, has the functions of caring the skin, keeping moisture, nourishing, whitening the skin, and the like, takes the action of effectively caring and nourishing the skin, preventing skin aging and tendering the skin, and has optimal use performance.

Non-foaming aqueous emulsion compositions; methylparaben-based preservative systems for aqueous aerosol compositions having a pH at or above a pH where methylparaben begins to hydrolyze; cosmetic, household, and human and veterinary pharmaceutical products containing these compositions.

The present invention relates to a preparation method of 4-[3-(2-butyl-amino) propoxy]- benzoic alkyl ester (a compound of formula (1)). The p-hydroxide benzene methyl formate and 1, 3 methylparaben react to prepare compound III under alkaline conditions. Then the products and putrescine dock to synthesize compound I under alkaline conditions. The compound is a key intermediate for preparing drugs of treating arrhythmic diseases, hydrochloride Juenaidalong. Wherein, R represents C1-C4 alkyl; X, X1 and X2 are halogen atoms, such as Cl, Br and I; but X1 and X2 are different from each other.

Non-steroidal anti-infammatory after shave preparations to aid in the prevention and treatment of Pseudofolliculitis Barbae and a method of delivering the ingredients of the preparation to affected areas of the skin. Formula I comprises ethanol, salicylic acid, propylene glycol, glycerine, fragrance, at least one compound for reducing skin irritation and at least one non-steroidal anti-inflammatory agent wherein said non-steroidal anti-inflammatory agent is an NSAID drug, a naturally occurring herbal compound containing an anti-inflammatory component or combinations thereof. Formula 11 comprises water, hydrolyzed oat flour, sorbitol, methylparaben, petrolatum, lanolin, cetyl alcohol, sunflower seed oil, stearic acid, propylparaben, triethanoloamine, a preservative, and at least one non-steroidal anti-inflammatory agent wherein said non-steroidal anti-inflammatory agent is an NSAID drug, a naturally occurring herbal compound containing an anti-inflammatory component or combinations thereof. The formulas have sufficient viscosity to allow the after shave preparation to remain on an affected area of the skin for a sufficient period of time to optimize the skin irritation reduction and anti inflammatory effects on the affected area thus providing local relief from irritation due to PFB.

The invention provides a refreshing and moistening cream having refreshing texture and soft and smooth touch sense and making skin younger and brighter. The refreshing and moistening cream comprises the following components: cyclopentasiloxane; glycerol; isononyl isononanoate; propylene glycol; 1,2-pentanediol; ethanol; betaine; an ammonium acryloyldimethyltaurate / VP copolymer; a mixture of components of ceramide 3, ceramide 6 II, ceramide 1, phytosphingosine, cholesterol, sodium lauroyl lactylate, carbomer and xanthan gum; octyl polymethyl siloxane; hydroxyethyl urea; polydimethylsiloxane; sodium hyaluronate; hydrolytic sodium hyaluronate; glyceryl stearate citrate; nicotinamide; cyclopentasiloxane or dimethiconol; tocopherol acetate; methyl hydroxybenzoate; an acrylic acid (acrylate) / C10-30 alkanol acrylate cross-linked polymer; aminomethyl propanol; a mixture of glycerol stearate and PEG-100 stearate; a daily chemical fragrance compound and the like.

The invention discloses the forage for artificial breeding of Monochamus alternatus Hope and method for preparing the same. The forage comprises 90-110 g of pine wood chip, 18-22 g of cane sugar, 10-15 g of yeast powder, 35-45 g of agar, 1.8-2.1 g of sodium benzoate, 0.9-1.2 g of mythyl p-hydroxybenzoate, 10 mL of H2SO4 (0.5 mol / L), 15-25 g of wheat germ powder, 1.2-1.5 g of cholesterol, 3-4.5 g of ascorbic acid, 18-21 g of casein, 0.7-1.1 g of choline and 750-850 mL of water. The forage provided by the invention has the advantages of abundance in resources, convenient manufacture and low cost, and the method for preparing the same is simple and workable. The development time of larvae fed with the above forage is significantly shortened, compared with that of larvae under natural circumstance in the forest. The development period of larvae that develop from egg development to adult emergence lasts for about 100 days. The forage is applicable to the large-scale breeding of Monochamus alternatus Hope larvae. Reproduction and breeding of Monochamus alternatus Hope at controlled temperatures can be realized to ensure the supplies of experimental populations of different stages, different instars and stable activities.

The invention discloses a method for simultaneously determining multiple preservatives in exported vegetables. The method comprises steps of extracting, purifying, concentrating, ultra performance liquid chromatography-mass spectrum / mass spectrum (UPLC-MS / MS) determination, etc. The method can simultaneously determine eighteen preservatives including imazalil, chlorpyrifos, carbendazol, thiabendazole, prochloraz, pyrimethanil, myclobutanil, flusilazole, propiconazole, triadimefon, iprodione, fenbuconazole, methyl p-hydroxybenzoate, ethyl p-hydroxybenzoate, propyl p-hydroxybenzoate, butyl p-hydroxybenzoate, ethyl naphthol and p-phenylphenol. The method for simultaneously determining multiple preservatives in exported vegetables disclosed by the invention has the advantages of simple and convenient steps, high accuracy and high precision.

The invention discloses a leucoderma covering agent. The leucoderma covering agent is a covering liquid or covering cream, wherein the covering liquid mainly comprises 1,2-propyleneglycol, jojoba oil, a preservative, a surfactant, vitamin E acetate, 1,3-dihydroxyacetone, an edible pigment and deionized water; and the covering cream mainly comprises magnesium aluminum silicate, 1,2-propyleneglycol, methyl parahydroxybenzoats, propyl p-hydroxybenzoate, imidazolidinyl urea, talcpowder, titanium dioxide, iron oxide, jojoba oil, vegetable fat, vitamin E acetate, stearyl alcohol, stearic acid, decapolyglycerol monooleate, diolein, triethanolamine and deionized water. The covering liquid has waterproof, sweatproof and wear-resistant effects, and is durable; the covering cream is quick in coloration and natural in color formation, and is convenient to use; and the covering liquid and the covering cream are combined to provide comprehensive covering for leucoderma patients.

The invention discloses a medicament for treating burns and a preparation method thereof. In order to overcome the defects of slow response, weak pain ease, scar after curing, need of skin grafting and the like of the conventional medicament for treating the burns, the medicament takes the following components as raw materials: bezoar, musk, pangolin scales, giant knotweed, goldthread root, amur corktree bark, rhubarb, airpotato yam rhizome, bletilla, Japanese ampelopsis root, Chinese angelica, chrysanthemum, lindley eupatorium herb, Chinese loropetalum herb, Chinese arborvitae twig, liquoricroot, cattle horn, 55 percent ethanol, parabens and mountain water. The medicament is prepared by processing the rest components except the bezoar, the musk, the chrysanthemum, the 55 percent ethanoland methyl hydroxybenzoate respectively by a conventional processing method of Chinese medicaments, crushing, mixing and fermenting the rest components except the bezoar, the musk, the 55 percent ethanol and the methyl hydroxybenzoate, distilling the fermented materials, adding the bezoar, the musk, the 55 percent ethanol and the methyl hydroxybenzoate into the distilled materials, and uniformly stirring and bottling the mixture serving as spray and liniment for the burns. The medicament is used for treating the burns, scalds, caumas, explosive wounds and the like, and has the advantages of quick response, strong effects of killing pain, no scar after curing, and no need of skin grafting.

The invention discloses an amino acid cleansing cream and a preparation method thereof. The amino acid cleansing cream comprises the following components in percent by weight: 3-8 percent of glycerol, 0.05-0.2 percent of hydroxyethylcellulose, 5-13 percent of propylene glycol, 25-30 percent of sodium lauroyl glutamate, 5-8 percent of sodium cocoyl glutamate, 0.5-1.5 percent of ethal-octadeca-composite fatty alcohol, 0-2 percent of ethylene glycol distearate, 0.2-0.6 percent of cetearyl alcohol ether (20), 0.5-1.5 percent of cocoaminopropyl dimethyl betaine, 0.5-1.5 percent of cetearyl alcoholether-60 myristyl glycol, 1-3 percent of acrylate / polyoxyethylene-20 stearin alcohol ether methacrylate copolymer, 0.4-0.8 percent of citric acid, 0.1-0.2 percent of diazolidiny urea, 0.10-0.15 percent of methyl phydroxybenzoate and the balance of deionized water. the amino acid cleansing cream has better stability and solid content of sodium lauroyl glutamate of more than or equal to 25 percent,and can create a comfortable and clear microenvironment for healthy growth and metabolism for skin cells on the face.

The invention belongs to the technical field of cosmetics and in particular relates to a fair-skinned, bright and white facial mask and a preparation method thereof. The fair-skinned, bright and white facial mask contains propylene glycol, hydroxyethyl urea, betaine, 3-O-ethyl ascorbic acid, arbutin, purslane extract, thyme extract, peony skin whitening essence, panthenol, nicotinamide, jojoba wax PEG-120 esters, tranexamic acid, carbomer, triethanolamine, sodium hyaluronate, PEG-40 hydrogenated castor oil, methyl hydroxybenzoate, phenoxyethanol / ethylhexyl glycerol, p-hydroxyacetophenone, essence and water. The fair-skinned, bright and white facial mask provided by the invention is natural and safe, contains multiple active ingredients, is good in permeability, can go deep into muscle bottom and supplement massive moisture and nutrients and can moisturize, nourish and repair, whiten skin, remove stains and alleviate a dark yellow state of skin, and fair-skinned and transparent skin is restored.

The invention provides a yeast polypeptide freeze-dried powder and facial mask composition which comprises yeast polypeptide freeze-dried powder and facial mask liquid; the yeast polypeptide freeze-dried powder and the facial mask liquid are separately packaged and preserved; the yeast polypeptide freeze-dried powder is preserved under the vacuum condition; the yeast polypeptide freeze-dried powder is prepared from a freeze-dried solution; the solution A comprises a yeast polypeptide stock solution, mannitol, trehalose and deionized water; the facial mask liquid comprises aloe extract, glycerinum, sodium hyaluronate, flavonoids glycyrrhiza, vitamin E acetic ester, EDTA disodium, methyl hydroxybenzoate and deionized water.The yeast polypeptide freeze-dried powder and facial mask composition has the advantages of being long in product preservation time and high in antioxidant activity preserving rate.

The invention discloses an anti-acne jelly with pearl hydrolyzate liposome. Acrylic acid (ester) / C10-30 alkanol acrylate crosslinked polymer, glycerol, 1,3-butanediol, witch-hazel extract, pearl hydrolyzate liposome, plant sterols, capryloyl glycin, allantoin, dipotassium glycyrrhizinate, diazolidinyl urea, methyl hydroxybenzoate, trolamine, disodium ethylene diamine tetraacetate and deionized water are evenly mixed to prepare the anti-acne jelly. In the invention, the pearl hydrolyzate liposome is added to the anti-acne jelly to effectively enhance the metabolism of skin cells, inhibit surplus lipid from secretion, dredge pores of skin cells, smoothly discharge impurities blocking the skin pores, such as dust, grease, bacteria, peeling, dead cells and the like, and promote the regeneration of surface cells, thereby effectively repairing impaired skin, accelerating the healing of impaired skin sores and pox marks, enabling the skin to be in a healthy state and smoothing the skin.

The invention relates to an artificial feed for asparagus caterpillar, preparation of the artificial feed and a feeding method, and belongs to the field of insect feeds. The artificial feed for asparagus caterpillar comprises the following components: wheat bran, chenopodium album powder, corn flour, ripe soybean powder, yeast powder, agar powder, distilled water, cholesterol, soybean edible oil, ascorbic acid, methyl parahydroxybenzoats and sorbic acid. Raw materials used for the feed are easy to obtain; the preparation technology is simple; the cost is relatively low; the guarantee period is relatively long (6 months); chenopodium album can reduce the viscosity of the feed, enhance the survival rate and percentage of pupation of larvae, can reduce the abnormal pupa rate, and can provide various vitamins required for the development of larva, so that the fed asparagus caterpillar has the average pupal weight of 111.8mg, has the average moth weight of 100.4mg, has the larva survival rate of 91%, and has the eclosion rate of 98%; the pupas have strong vitality, and can be stored in a refrigerator with the temperature of 5 DEG C for 7 days; the feed is relatively good in feeding effect and achieves the aim of long-term large-scale continuous rearing.

A process for preparing the 4,4'-bihydroxybiphenyl methaneone includes mixing phenyl p-hydroxybenzoate with catalyst in organic solvent, heating while stirring, reaction, separating the resultant and recrystallizing.

The invention discloses artificial feed for Spodoptera frugiperda larvae and a preparation method and application thereof. The artificial feed for Spodoptera frugiperda larvae is made from, by weight,200-300 parts of corn meal, 80-120 parts of soybean meal, 10-30 parts of yeast powder, 10-20 parts of milk powder, 5-15 parts of vitamin complex, 6-9 parts of ascorbic acid, 2-6 parts of methyl 4-hydroxybenzoate, 2-5 parts of sorbic acid, 10-30 parts of agar powder, and 1500-2000 parts of sterile water. The invention also provides a method of feeding with the artificial feed. The artificial feedfor Spodoptera frugiperda larvae and the preparation method and application thereof have the advantages that materials are easy to attain, the cost is low, preparation is convenient, storage time is long, nutrition is complete, feeding effect is good, the artificial feed is very practical, and large-scale feeding of Spodoptera frugiperda larvae is benefited.

The invention provides essence cream realizing repairing at night. The essence cream realizing repairing at night comprises allantoin, EDTA-2NA, acrylic acid (ester) / C10-30 alkanol acrylate cross-linked polymer, hyaluronic acid, hydrogenated polyisobutene, cetyl ethyl hexanoate, glyceryl stearate / PEG-100 stearate, polydimethylsiloxane, C14-22 alcohol / C12-20 alkyl glucoside, shea butter oil, tocopherol acetate, polydimethylsiloxane / dimethiconol, methyl silanol mannuronic acid ester / sodium methyl hydroxybenzoate / sorbic acid / propyl hydroxybenzoate, water / butanediol / 1,2-hexanediol / beta-glucan / phenoxyethanol, water / phenoxyethanol / algae extract, nicotinamide, water / propylene glycol / flos buddlejae extract, and dipotassium glycyrrhizinate. The essence cream belongs to emulsified ointment essencewith the efficacies of repairing skin injuries and realizing the moisturizing effect. The essence cream system realizing repairing at night is stable, realizes permeation and absorption easily, is refreshing but not greasy, can effectively repair injuries caused to the skin by sunlight, can balance the skin color, can resist skin ageing, realizes effective moisturizing, and realizes regenerating and nursing at night.

The invention relates to a deep cleansing and moisturizing attached type mask containing a taxuscanadensis extract. The deep cleansing and moisturizing attached type mask containing the taxuscanadensis extract consists of the following 41 ingredients: the taxuscanadensis extract, water, glycerine, butanediol, polyethylene glycol-400, glycine betaine, hyaluronic acid, oat beta-glucan, ascorbic acid, tea polyphenols, sodium hyaluronate, a tremella sporocarp extract, a chondrus crispus extract, a ginseng root extract, a hydrolyzed adansonia digitata extract, a centella asiatica extract, a grape seed extract, aloe vera gel, hydrolytic collagen, serine, histidine, aspartic acid, alanine, xanthan, methyl hydroxybenzoate, carbomer, trehalose, EDTA (ethylene diamine tetraacetic acid) disodium, hydroxypropyl methyl celluloses, allantoin, sorbitol, ethylhexylglycerin, polyquaternary salt-10, ethoxy urea, saualane, PEG-40 hydrogenated castor oil, forulic acid, resveratrol, dipotassium glycyrrhizinate, triethanolamine and phenoxyethanol. The taxuscanadensis extract in the attached type mask can remove free radicals, and meanwhile, effects of thinning pores, brightening skin and moisturizing skin can be achieved.

The invention provides a method for simultaneously analyzing and detecting methylparaben (Me-PHBA), propylparaben (Pr-PHBA) and dibutyl hydroxy toluene (BHT) in clindamycin phosphate gel. According to the method, Agilent ZORBAX SB-C18 (4.6mm*250mm, 5 mu-m) is adopted as a chromatographic column, an acetonitrile-1% acetic acid aqueous solution is used as a moving phase for gradient elution, double wavelengths (the detecting wavelength for detecting Pr-PHBA and Me-PHBA is 250-260nm, and the wavelength for detecting BHT is 270-286nm) are adopted for analyzing and detecting. The analyzing method is quick, has the advantages of good specificity and high sensitivity, is suitable for detecting contents of Me-PHBA, Pr-PHBA and BHT in a medicine preparation, in particular a gel.

The invention discloses a mosquito-repellent perfume and a preparation method thereof, and relates to a perfume. The invention provides a mosquito-repellent perfume having little dosage and long effective mosquito-repellent time, and a preparation method thereof. The mosquito-repellent perfume comprises the following raw materials in percentage by mass: 3 to 5 percent of deet, 3 to 5 percent of emulsifier, 0.2 to 0.5 percent of beta-cyclodextrine, 0.05 to 0.1 percent of methylparaben, 0.2 to 0.5 percent of perfume, 3 to 6 percent of glycerin, 0.7 to 1 percent of sodium chloride, 15 to 20 percent of ethanol and the balance of water. The preparation method comprises the following steps of: adding the water, the ethanol, the deet, the emulsifier and the beta-cyclodextrine into a reaction kettle, and stirring to obtain a mixture A; adding the glycerin and the perfume into the mixture A, and stirring to obtain a mixture B; and adding the methylparaben and the sodium chloride into the mixture B, stirring, standing and defoaming to obtain the mosquito-repellent perfume. The obtained mosquito-repellent perfume is transparent liquid.

The invention provides vagina pH buffer antibacterial gel, a preparation method thereof, and a using method thereof. The gel mainly comprises the components of polycarbophil, carbomer, ethylenediamine tetraacetic acid disodium, chitosan, glycerol, triethanolamine, methyl parahydroxybenzoats and deionized water. By using the weak acidity of polycarbophil and the antibacterial performance of chitosan, the gel can eliminate the source of recurrence of vagina inflammatory diseases and recovers the self-cleaning ability of the vagina. The gel is free from antigen performance, allergy and irritation, and convenient to use, and tissue reaction is avoided.

The invention discloses an amino acid anti-aging cream which comprises three components A, B and C in parts by weight, the component A comprises the following materials in parts by weight: 18-25 parts of ozocerite, 4-7 parts of octadecanoic acid, 4-6 parts of stearyl alcohol, 2-5 parts of sp-60, 2-4 parts of Tween-60, 1-3 parts of hydrogenated lanolin, 1-2 parts of beewax and 0.1-0.3 part of propyl p-hydroxybenzoate; the component B comprises the following materials of 50-60 parts of distilled water, 3-8 parts of propylene glycol, 3-5 parts of cysteine, 1-3 parts of gamma-amino-beta-hydracrylic acid and 0.1-0.3 part of methyl parahydroxybenzoats; and the component C comprises the following material of 0.5-1 part of essence.

The invention discloses a self-foaming sun block and a preparation method thereof. The self-foaming sun block is prepared from deionized water, glycerinum, butanediol, propylene glycol, methyl parahydroxybenzoats, EDTA-2Na, potassium cetyl phosphate, dicyl polyglycoside, allantoin, xanthan gum, dipotassium glycyrrhizinate, ethylhexyl Methoxycinnamate, C12-15 cholesteryl benzoate, C12-20 alkyl polyglycoside, polydimethylsiloxane, caprylic acid / tricaprin, dicaprylyl carbonate, methylenebis-benzotriazolyl tetramethyl butylphenol, ethylhexyl triazone, diethylaminohydroxybenzoyl hexyl benzoate, a VP / eicosylene copolymer, polyhydroxystearic acid, cyclopentasiloxane, tocopheryl acetate, cyclotetrasiloxane, dimethiconol, propyl p-hydroxybenzoate, aluminum stearate, Novec HFE-7100 and the like. The self-foaming sun block disclosed by the invention is good in sunscreen effect, so that people feel relatively fresh and breathable.

The invention relates to the field of cosmetics and in particular relates to eye gel. The eye gel is prepared from the following components in percentage by weight (%): 11 percent to 12 percent of 1,3-butanediol, 3.5 percent to 5 percent of glycerol, 6 percent to 7 percent of glycerol acrylate / acrylate copolymer, 9 percent to 10 percent of propylene glycol, 7.5 percent to 9 percent of a PVM / MA copolymer, 3 percent to 5 percent of sodium hyaluronate, 2 percent to 4 percent of carbomer, 2.5 percent to 3 percent of sclerotium gum, 5 percent to 6 percent of triethanolamine, 4 percent to 5 percent of allantoin, 6 percent to 7 percent of methyl hydroxybenzoate, 13 percent to 14 percent of hydrogenated castor oil, 2 percent to 3 percent of polysorbate-20, 2 percent to 3 percent of imidazolidinyl urea, 1.5 precent to 3 percent of vitamin E and the balance of de-ionized water which is added until the total amount is 100. The eye gel provided by the invention is fresh and prone to absorb, does not cause any load on skins and can activate microcirculation of the skins around eyes so that the skins around the eyes are full of moisture; the eye gel can be used for enabling a skin color to be even, improving a dark phenomenon of the eyes, reducing edema of the eyes, fading black eyes and reducing dry wrinkles and under-eye puffiness of the eyes. The eye gel has the effects of alleviating a fatigue feeling, enabling the skins to recover elasticity and be compact and perfect, and molding the eyes which are revitalized and are bright. The eye gel also has the effects of keeping moisture, diminishing inflammation and the like, and is suitable for various skin types to use.

The invention discloses a formula of an artificial feed for dichocrocis punctiferalis, and a manufacturing method of the artificial feed and belongs to the field of artificial feeds for insects. The feed comprises Chinese chestnut powder, maize meal, peach powder, soybean flour, beer yeast powder, multivita-glucose, cholesterol, casein, ascorbic acid, erythromycin, agar powder, methylparaben, methyl parahydroxybenzoats and water. The invention further provides a manufacturing method of the artificial feed for dichocrocis punctiferalis. According to the artificial feed, the Chinese chestnut powder, the maize meal, the soybean flour, the beer yeast powder and the like are added and are in coordination with a plurality of trace elements, so that on the premise of improving the survival rate, the fecundity and the like of dichocrocis punctiferalis, the raising cost is lowered effectively, and the problem that when the conventional artificial feed is used for feeding dichocrocis punctiferalis, larvae refuse feed, the survival rate is low, and the development is not uniform can be solved.

A process for preparing the injection of water-soluble vitamin includes such steps as thermally dissolving glycine in the water for injection while filling inertial gas, adding 12 compounds including cysteine hydrochloride, endrate disodium, vitamin C sodium, folic acid, etc, stirring, regulating pH=5.6-6.1, adding the water for injection, stirring, aseptic filtering, pouring in containers, pre-freezing, vacuumizing, filling inertial gas, pre-freezing, heating to 30-35 deg.C, holding the temp for 6-10 hr, filling inertial gas, and sealing.

The invention relates to liquid crystal epoxide resin wit branch chain, its (1) is shown at the right: R is alkyl containing 1-16 carbon atom, m=1-10, also it relates to the method to prepare the compound, the combination and its application. The invention has the characteristic that the product etherealized and then esterified of methyl p-hydroxybenzoate and alkenyl alkyl halide has reaction with the product of 2,5-dihydroxy-benzoic acid and alkyl alcohol or alkyl halide, the compound generated then reacts with peroxiding agent, making the liquid crystal epoxide resin with branch chain, and the productivity is as high as 70-85%, much higher than the conventional dirct esterification method. The invention has the performance of liquid crystal, and lower melt point than that without branch chain, can be solified by many curing agent in lower temperature for producing electronic enclosing material and shape-mambering material with outstanding performance.