2116 results about "Vinyl chloride" patented technology

The present invention provides a polymer membrane enhanced with cured epoxy resin for use as the outer membrane of biosensors. The membrane includes approximately 30-80% epoxy resin adhesives, 10-60% polymer such as poly(vinyl chloride), polycarbonate and polyurethane and 0-30% plasticizers and 5-15% surface modifier reagent such as polyethylene oxide-containing block copolymers. Utilizing the polymer membrane of the present invention, a three-layered sensing element has been developed. This sensing element will be particularly useful for miniaturized biosensors used for in vitro blood measurements or for continuous in vivo monitoring such as implantable biosensors. This element includes an enzyme layer, an interference-eliminating layer and the novel polymer member of the present invention as the outer polymer layer. This novel sensing element shows excellent response characteristics in solutions and has an extremely long lifetime. This technology is particularly useful for improving the lifetime of implantable biosensors.

The invention relates to a composite comprising a weight fraction of single-wall carbon nanotubes and at least one polar polymer wherein the composite has an electrical and/or thermal conductivity enhanced over that of the polymer alone. The invention also comprises a method for making this polymer composition. The present application provides composite compositions that, over a wide range of single-wall carbon nanotube loading, have electrical conductivities exceeding those known in the art by more than one order of magnitude. The electrical conductivity enhancement depends on the weight fraction (F) of the single-wall carbon nanotubes in the composite. The electrical conductivity of the composite of this invention is at least 5 Siemens per centimeter (S/cm) at (F) of 0.5 (i.e. where single-wall carbon nanotube loading weight represents half of the total composite weight), at least 1 S/cm at a F of 0.1, at least 1×10^{−4 S/cm at (F) of 0.004, at least 6×10−9} S/cm at (F) of 0.001 and at least 3×10⁻¹⁶ S/cm (F) plus the intrinsic conductivity of the polymer matrix material at of 0.0001. The thermal conductivity enhancement is in excess of 1 Watt/m-° K. The polar polymer can be polycarbonate, poly(acrylic acid), poly(acrylic acid), poly(methacrylic acid), polyoxide, polysulfide, polysulfone, polyamides, polyester, polyurethane, polyimide, poly(vinyl acetate), poly(vinyl alcohol), poly(vinyl chloride), poly(vinyl pyridine), poly(vinyl pyrrolidone), copolymers thereof and combinations thereof. The composite can further comprise a nonpolar polymer, such as, a polyolefin polymer, polyethylene, polypropylene, polybutene, polyisobutene, polyisoprene, polystyrene, copolymers thereof and combinations thereof.

Disclosed are Bisphenol A (BPA), Bisphenol F, Bisphenol A diglycidyl ether (BADGE), and Bisphenol F diglycidyl ether (BFDGE)-free coating compositions for metal substrates including an under-coat composition containing a polyester (co)polymer, and an under-coat cross-linker; and an over-coat composition containing a poly(vinyl chloride) (co)polymer dispersed in a substantially nonaqueous carrier liquid, an over-coat cross-linker, and a functional (meth)acrylic (co)polymer. Also provided is a method of coating a metal substrate using the BPA, BPF, BADGE and BFDGE-free coating system to produce a hardened protective coating useful in fabricating metal storage containers. The coated substrate is particularly useful in fabricating multi-part foodstuffs storage containers with “easy-open” end closures.

PCT No. PCT/JP97/00572 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Feb. 27, 1997 PCT Pub. No. WO97/31990 PCT Pub. Date Sep. 4, 1997This invention provides a method for reclaiming oil from waste plastic in such a way that thermosetting resins and solid foreign matter in the plastic will not pose a problem. This method greatly reduces the burden of presorting the garbage or industrial waste. To achieve this objective when oil is to be reclaimed from a waste plastic containing chlorine compounds, such as vinyl chloride, the plastic must first be stripped of chlorine. Prior to pyrolysis, while being conveyed forward in a continuous stream, the plastic is mixed with heated sand and/or an additive agent to raise its temperature to 250-350 DEG C. This creates a product which is comprised of a mixture of sand and substantially dechlorinated plastic. The product is mixed with heated sand to heat it directly to a temperature of 350-500 DEG C. It is maintained at this temperature until pyrolysis occurs. In order to obtain high-quality oil with a low boiling point, a first gas/liquid separation process separates the product obtained from the aforesaid pyrolysis into liquid high-boiling point oil, gaseous low-boiling point oil and low molecular-weight gases, and recirculates the liquid high-boiling point oil to the pyrolysis process, and a second gas/liquid separation process separates the gaseous low-boiling point oil and low molecular-weight gases into liquid low-boiling point oil and low molecular-weight gases. The first and second gas/liquid separation process are connected in sequence.

The invention discloses a preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes, which is characterized in that the tubes are made by the following steps: 75 to 100 portions of chlorinated polyvinyl chloride resin, 0 to 25 portions of vinyl chloride resin, 3 to 10 portions of ABS, 1 to 8 portions of acrylic acid resin, 3 to 8 portions of bismaleimides, 1 to 5 portions of plasticizing accelerator, 1 to 5 portions of compatibilizer, 10 to 25 portions of engineering plastics, 1 to 3 portions of lubricant, 1 to 5 portions of nanometer materials, 4 to 8 portions of stabilizing agent, 2 to 15 portions of filler, 0 to 1 portion of cross-linking agent, 1 to 5 portions of processing modifier and 3 to 10 portions of impact modifier are mixed and blended according to weight proportion, and then extruded by a mould. Compared with the prior art, the super-strong high temperature-resistant chlorinated polyvinyl chloride tubes has the advantages of being high in vicat softening point, being capable of meeting the high-temperature requirement of more than 120 DEG C, and having good anti-aging performance, antiflaming and insulation performance, and compression resistance, and long service life.

The present invention is related with bioplasticizers or primary oleochemical plasticizers and the improved process for obtaining thereof. It refers primarily to epoxydized oleochemical plasticizers produced from vegetable oils, as substitute of traditional petrochemical plasticizers. The process starts with the epoxydized product of natural oils, such as sunflower, linseed, Jatropha curcas, soybean, etc., which are transesterified with an alcohol such as ethylic or methylic, in the presence of a catalyst such as sodium methoxide or sodium hydroxide in order to produce an alkylic esters mixture of the fatty acids that were present in the oil or oil mixture used as raw material in the epoxydized oil production. When the plasticizer obtained by the process already mentioned is used for the formulation of moldable poly(vinyl chloride), PVC, resins; the resulting plastic films get adequate hardness, static and dynamic thermal stability, and plasticizer extractability by solvents, such as n-hexane, gasoline and oil. Besides, when the PVC resin is formulated with a phthalic or terephthalic plasticizers mixture and the bioplasticizer, the bioplasticizer presents a full range solubility and or compatibility with the remainder of the resin compounds. The oxyrane chemical ring of the bioplasticizer is an excellent chemical neutralizer of the HCL that might be formed from the PVC, due to the action or interference of thermal or UV radiation.

Provided is a tea leaf-transporting apparatus whereby it is possible to transport tea leaves in a sanitary manner. The tea leaf-transporting apparatus (1) is characterized by a configuration for transporting tea leaves (11) fed into a transportation pipe (32) which is configured from a metal pipe of stainless steel or the like, or a resin pipe of vinyl chloride or the like, by means of hot water (12), and a configuration for separating the hot water (12) and the tea leaves (11) which flow out of the transportation pipe (32). Additionally, adjusting factors such as the temperature of the hot water (12) or the amount of time that the tea leaves (11) remain in the transportation pipe (32) makes it possible to sterilize the tea leaves, deactivate oxidase, reduce the cuticular layer, and reduce the amount of caffeine as said tea leaves are transported.

Blends of amorphous and semicrystalline polymers having shape memory properties were prepared by blending a crystalline polymer such as poly(vinylidene fluoride), polylactide, poly(hydroxxybutyrate), poly(ethylene glycol) polyethylene, polyethylene-co-vinyl acetate, poly(vinyl chloride), poly(vinylidene chloride) and copolymers of poly(vinylidene chloride) and poly(vinyle chloride) and an amorphous polymer such as poly(vinyl acetate), poly methyl acrylate, poly ethyl acrylate, atactic poly methyl methacrylate, isotactic poly methyl methacrylate, syndiotactic poly methyl methacrylate and other poly alkyl methacrylates. The method for preparing the polymeric materials and applications thereof, for example, as smart medical devices, are also disclosed.

The invention discloses a kind of window PCE shaped material with antistatic and dustproof function and its manufacturing method. It raw materials are composes of PVC resin powder, antistatic agent, impact modifier, stabilizer, filler and processing aid in accordance with the weight ratio of 100:0.2-20:1-10:2-8:5-20:1-10. Then it heats and stirs the raw materials at a temperature of 100 ~ 130deg.C in the high-speed mixer, and then it slowly cools the mixture to room temperature and transfers the materials to the extruder, finally it achieves the shaped material through extrusion molding mold, vacuum cooling, traction and cutting.

The invention relates to a non-mercuric catalyst used in hydrochlorination of acetylene and a method for preparing vinyl chloride by using the catalyst. The non-mercuric catalyst used in hydrochlorination of acetylene for preparing vinyl chloride comprises main active ingredients-gold salts, auxiliary active ingredients-non precious metal salts and a carrier, wherein the main active ingredients are gold salts and can be halides, complexes and the like of gold; gold in the gold salts accounts for 0.1-10% by weight of the catalyst; the auxiliary active ingredients are non precious metal salts and can be halides, acetates, phosphates, complexes and the like of potassium, barium, lanthanum and copper; the non precious metal salts account for 0.1-10% by weight of the catalyst; and the carrier is activated carbon, comprising coconut shell carbon, coal carbon, nutshell carbon or silica gel. The non-mercuric catalyst can be prepared by the conventional impregnation method, has simple preparation method, is environment-friendly and has the advantages of less by-products, good stability and long service life. The conversion rate of acetylene can be 90-99% and the selectivity of vinyl chloride is not lower than 99%.

The invention relates to a cold-resistant PVC cable material which can resist the cold of minus 50DEG C, and a preparation method thereof; the material comprises PVC cable material; and after being added with the multipolymer of vinyl chloride and vinyl acetate, the cold resistant temperature of the cable material reaches minus 50DEG C. The invention has the advantages that: 1. the low-temperature impact brittleness temperature of the prepared low temperature resistant cable material can reaches minus 50DEG C; and 2. not only the process performance of PVC is not changed but also the manufacturing cost is low.

A process is provided for the start-up of an ethylene epoxidation process comprising: (a) contacting a catalyst bed comprising a high selectivity epoxidation catalyst with a feed comprising ethylene, oxygen and an organic chloride for a period of time until an increase of at least 1×10⁻⁵ mole-% of vinyl chloride (calculated as the moles of vinyl chloride relative to the total gas mixture), preferably 2×10⁻⁵ mole-% of vinyl chloride is detected in a reactor outlet gas or a recycle gas loop; and (b) subsequently adjusting the quantity of organic chloride in the feed to a value sufficient to produce ethylene oxide at a substantially optimum selectivity.

The invention discloses a hot stamping foil applied to overlapping hot stamping on a gold stamping layer and a preparation method of the hot stamping foil. When overlapping hot stamping is carried out on an existing hot stamping foil, the defects that the transferring is incomplete, the hot stamping is not carried out on some portions due to omission, scumming is caused, powder falls off, and the edge of a hot stamping layer is not clear can happen. The hot stamping foil is composed of a base membrane layer, a release layer, a color coating layer, a vacuum aluminum coated layer and a gumming layer. The gumming layer is prepared by raw materials which comprise, by weight, 1-6 parts of chloroethylene-vinyl acetate resin, 1-10 parts of polyvinyl alcohol, 1-10 parts of acrylic ester, 1-5 parts of nitrocellulose, 1-5 parts of fumed silica, 20-70 parts of ethyl acetate, 10-50 parts of ethyl alcohol and 1-5 parts of propyl acetate. According to the hot stamping foil applied to the overlapping hot stamping on the gold stamping layer, the hot stamping foil has the good stamping performance and the good trimming performance, the overlapping hot stamping layer is complete in transferring, the edge is smooth and free of burrs, the adhesion is firm, the phenomena of dusting, powder falling and the like do not exist, the hot stamping effect is strong in third dimension, and the anti-fake performance is more outstanding.

Disclosed herein is a back-grooved laminate wood flooring in which a wood veneer of high pressure resin impregnation laminate (WPL) is laminated on a base selected from a vinyl chloride (PVC) resin layer, on oriented strand board (OSB), a high-density fiberboard (HDF) and a waterproof plywood. More specifically, the back-grooved laminate wood flooring comprises a WPL (20), an adhesive layer (40) and a base (10) (a polyvinyl chloride resin layer, OSB, HDF or waterproof plywood) wherein the WPL (20) includes a base-reinforcing layer (24), a natural veneer layer (23), a resin-impregnated overlay layer (22) and a surface UV coating layer (21) layered in this order from the bottom. The back-grooved laminate wood flooring further exhibits excellent soundproofing performance.

This invention relates to a low noble metal mercury-free catalyst for a vinyl chloride synthesis reaction through an acetylene hydrochlorination reaction, a preparation method and an application thereof. The catalyst comprises an active carbon carrier and a mixed active component comprising one or a plurality of noble metal compounds and one or a plurality of general metal compounds according to a certain ratio, wherein the mass content of the noble metal is 0.01-0.04%, and the mass content of the general metal is 0.1-1%. The low noble metal mercury-free catalyst has characteristics of low noble metal content, low catalyst cost, high catalyst activity and long service life.

The invention discloses a method for preparing a mercury-free catalyst for the synthesis of vinyl chloride by acetylene method. In the method, the active components of the catalyst are highly dispersed and bonded to the surface of the carrier by carrying out surface modification treatment on the catalyst carrier and applying ultrasonic loading technology. On the group, a firm load is formed in the internal pores of the carrier, so that while improving its catalytic performance and stability, it can greatly reduce the loading of the required active components and reduce the cost of the catalyst. The method is especially suitable for preparing supported noble metal catalysts. The supported noble metal catalysts prepared by the method of the present invention can reach and exceed the catalytic activity of the currently used mercuric chloride catalysts in the case of a very small amount of loading. And stability, has industrial application value, and is of great significance in environmental protection and promoting the sustainable development of my country's polyvinyl chloride industry.

A polymer extender composition comprising monomers copolymerized in the following percentages by weight: (a) from about 5% to about 90% of a monomer of the formula I:

R₁—OC(O)—C(R)═CH₂  (I)

(b) from about 5% to about 85% of vinylidene chloride, vinyl chloride, vinyl acetate, or a mixture thereof, (c) from about 0.5% to about 3% of a monomer of the formula II:

HO—CH₂—NH—C(O)—C(R)═CH₂  (II)

(d) from about 0.5% to about 3% of a monomer of the formula III

HO—CH₂CH₂—OC(O)—C(R)═CH₂  (III)  and (e) from about 1% to about 5% of a monomer of the formula IV:

H—(OCH₂CH₂)_m—O—C(O)—C(R)═CH₂  (IV)

(f) from 0% to about 25% of methyl methacrylate, vinylbenzyl chloride, styrene or a mixture thereof, wherein

• • each R is independently H or CH₃;
  • R₁ is a linear or branched or cyclic alkyl chain having from about 4 to about 18 carbon atoms, and m is 2 to about 10.

The invention relates to a water-based rust conversion antirust primer which is characterized in that: the primer comprises the following components with the corresponding percentage by weight : main conversion agent 5-35, auxiliary conversion agents 2-15, film forming material 40-55, penetrant 0.2-1.0, humectant 1-10, anti-forming agent 0.1-0.5, corrosion inhibitor 0.2-0.5 and solvent 0.5-8; the process is as follows: adding deionized water to a charging basket and heating the water to 60-80 DEG C with aliphatic alcohol polyethenoxy ether added, adding propylene glycol and starting a high-speed dispersion machine for agitation, later on adding tributyl phosphate, potassium sorbate, tannic acid and one of the auxiliary conversion agents and cooling down to 20-33 DEG C after agitating for 30-55 minutes, and adding vinyl chloride-modified acrylic resin latex and discharging material after agitating for 10-20 minutes. The invention has the advantages of direct application to steel surfaces with rust, thorough conversion of rust, excellent adhesive force of a conversion film, good flexibility, adaptation to various forms, and good compatibility with various top coatings.

The invention relates to a method for synthesizing and regenerating a mercury-free catalyst for hydrochlorination of acetylene and an application thereof, which belongs to the technical field of preparation of the mercury-free catalysts. The catalyst contains bismuth, phosphorous, a component for promoting catalysis and a carrier. The content of bismuth element accounts for 0.1-68.8wt% of the weight of the catalyst, the content of phosphorous element accounts for 0.1-40.8wt% of the weight of the catalyst, the content of the component for promoting the catalysis accounts for 0.1-63.6wt%, and the content of the carrier accounts for 50-99.5%. The coke-burning regeneration is carried out on the catalyst in hydrogen, water vapor, oxygen, air or other oxygen-containing oxidative atmosphere at the temperature of 300-600 DEG C after the inactivation. The catalyst is prepared by the impregnation method, the co-precipitation method or the spray granulation method. The catalyst provided by the invention has the advantages of good activity, high selectivity, high strength and regeneration, and can be used for producing vinyl chloride by the hydrochlorination of the acetylene.

The invention discloses a composite metal salt catalyst for a hydrochlorination reaction of acetylene, belonging to the technical field of catalysts. The composite metal salt catalyst takes gold as active metal, and the reduction deactivation of the composite metal salt catalyst is reduced by reducing reduction potential of metal through a complexing action of a thiocyanate radical or a cyanate radical. Carbon deposition in a reaction process is restrained by introducing one or more of potassium, cerium and lanthanum elements. The composite metal salt catalyst is loaded on active carbon or carbon nanometer pipe with the specific surface area of not less than 100m<2>*g<-1>, wherein the mass fraction of a gold load is 0.05-0.50%, the mass fraction of a copper load is 0.1-5.0%, and the mass fraction of the potassium/cerium/lanthanum load is 0.1-5.0%. In a reaction for preparing vinyl chloride, composite salt of gold and copper has excellent activity, selectivity and stability; furthermore, one or two of cerium and lanthanum are added to a catalyst so as to be capable of effectively restraining the carbon deposition and catalyzing a hydrochlorination process of the acetylene in low cost and high efficiency.

One aspect of the present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-sulfur bond between the sulfur atom of a thiol moiety and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. In other embodiments, the present invention relates to copper(II)-catalyzed methods of forming a carbon-nitrogen bond between the nitrogen atom of an amide and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-carbon bond between the carbon atom of cyanide ion and the activated carbon of an aryl, heteroaryl, or vinyl halide or sulfonate. In another embodiment, the present invention relates to a copper-catalyzed method of transforming an aryl, heteroaryl, or vinyl chloride or bromide into the corresponding aryl, heteroaryl, or vinyl iodide. Yet another embodient of the present invention relates to a tandem method, which may be practiced in a single reaction vessel, wherein the first step of the method involves the copper-catalyzed formation of an aryl, heteroaryl, or vinyl iodide from the corresponding aryl, heteroaryl, or vinyl chloride or bromide; and the second step of the method involves the copper-catalyzed formation of an aryl, heteroaryl, or vinyl nitrile, amide or sulfide from the aryl, heteroaryl, or vinyl iodide formed in the first step.