139 results about "Vinylidine chloride" patented technology

The invention provides a preparation method of copolymerization latex of polyvinylidene chloride and acrylate, which comprises that reacts raw materials polyvinylidene chloride monomer, second monomer, functional monomer, composite emulsifier, pH adjuster, initiator, seed latex, and water in inertia gas, 0.08-0.12MPa and 50-60DEG C, collects polyvinylidene chloride and acrylate copolymerization latex from reaction product. The inventive PVDC latex is white stably, without changing into yellow after coating, with high stability. The latex can be directly coated on surface of base material as BOPP, BOPET and PVC hard sheet, while the coated or coated and dried film has barrier property, damp proofness, fragrance protectiveness, chemical drug resistance, and fireproof or the like. The film is transparent for long time, without changing into yellow. The inventive product can be used in one-time environment-friend dinnerware and inner layer of paper package, as tobacco, food and drug.

The invention relates to a preparation method of a binary acid refined adsorbing material. According to the preparation method, co-monomers, namely beta-myrcene, vinyl methyl silicone (diol) diacetate and N,N-methylene bisacrylamide, are added into vinylidene chloride, a dispersing aid (methyl vinyl ether copolymerized maleic acid) is added to generate a polymer, and the polymer is utilized for extracting decolored binary acid with a long carbon chain. The preparation method has the advantages that the adsorbing capacity is high, and the loss of binary acid caused by the repeated crystallization and filtration can be reduced.

The invention relates to a preparation method of aqueous vinylidene chloride glue used in a high-barrier plastic film. The preparation method comprises the following steps: taking cheap and available vinylidene chloride as a main comonomer, and selecting the vinylidene chloride, polymerizable functional monomer, acrylic monomer and part of unsaturated fatty acid to be copolymerized in the presence of various emulsifiers by seeded semi-continuous emulsion polymerization to obtain an aqueous vinylidene chloride adhesive with good property. When the base glue is applied to the bottom layer of the plastic film (polypropylene, polyethylene, polyester and polyamide), the base glue has the advantages of good wettabilityand strong cohesive force, and the base glue is especially suitable for replacing a polyurethane adhesive as the base glue when coating the high-barrier plastic film.

The invention discloses a VDC / MA copolymerized PVDC composition, which comprises the following components in portion by weight: 88 to 95 portions of vinylidene chloride monomer, 5 to 12 portions of methyl acrylate monomer, 0.005 to 0.02 portion of chelating agent, 0.05 to 0.25 portion of dispersant, 0.03 to 0.12 portion of pH modifying agent, 0.30 to 4.0 portions of thermal stability plasticizing agent, 0.15 to 0.40 portion of evocating agent, and 2.33 to 14.5 portions of post processing assistant. The weight average molecular weight MW of the composition is 75,000 to 90, 000. The VDC / MA copolymerized PVDC composition solves the problem that a PVDC resin has poor post processing thermal stability and is easy to decompose and change colors, and can keep the luster of an membrane surface unchanged for long term when the composition as a multilayer co-extrusion membrane or a co-extrusion cast membrane is used for packing low-medium temperature food.

An attrition and shatter resistant plant nutrient / pesticide briquette composition which slowly releases the nutrients and biologically active materials over long periods of time, comprising slow release plant nutrient particles, pesticide sorption particles, liquid systemic pesticide sorbed on the pesticide sorption particles to reduce pesticide leachability, an adhesive, coating the slow release plant nutrient and pesticide sorption particles, the composition formed into briquettes by pressing into dies at elevated pressures and temperatures to make briquettes resistant to attrition and shattering. A six step method is provided for the preparation of the slow releasing briquettes from slow release fertilizers, such as magnesium ammonium phosphate; pesticide sorption particles, such as activated carbon; liquid systemic pesticides emulsions, such as imidachloprid fosetyl-Al, and metalaxyl; and adhesives, such as a vinylidine chloride, 2-ethylhexyl acrylate, acrylic acid resin emulsion.

The invention belongs to the technical field of a metal anti-corrosion coating, and particularly relates to a rust transforming agent and a preparation method thereof, a water-based iron rust conversion coating and a preparation method thereof. The rust transforming agent comprises a step of synthesizing 2-hydroxypropyl 3,4,5-trihydroxybenzoic acid by taking a gallic acid, 1,2-propylene glycol and a p-toluenesulfonic acid as initial raw materials, wherein the rust transforming agent contains 18.5-26.7% of gallic acid, 66.6-74% of 1,2-propylene glycol, and 6.6-7.5% of p-toluenesulfonic acid; the water-based iron rust conversion coating is prepared from a vinylidene chloride composite polymer emulsion, ethylene glycol butyl ether, filling slurry prepared in the step (1) and the rust transforming agent. The prepared rust transforming agent disclosed by the invention is good in water tolerance, strong in stability, and good in matching property with a water paint and an oil paint.

To provide a water / oil repellent composition which can impart water / oil repellency with excellent friction durability to a surface of an article, even though while having structural units based on a monomer having an Rf group having at most 6 carbon atoms, structural units based on a monomer having an Rf group having at least 8 carbon atoms are reduced as much as possible, and an article which has little impact on environment and is less susceptible to deterioration of water / oil repellency by friction.A water / oil repellent composition which comprises polymer (A) having units of monomer (a) and units of monomer (b), having no units of monomer (c) and having at least 15 mass % and less than 45 mass % of fluorine atoms, and polymer (B) having units of monomer (a), having no units of monomer (c) and having at least 45 mass % of fluorine atoms: monomer (a): a monomer having a C4-6 Rf group; monomer (b): a monomer having an alkyl group having at least 12 carbon atoms, vinyl chloride or vinylidene chloride; monomer (c): a monomer having Rf group having at least 8 carbon atoms.

The invention relates to a multilayer packaging film comprising at least three different types of layers (A), (B), and (C): (A) is at least one outer layer, (B) is at least one passive oxygen barrierlayer, (C) is at least one active oxygen scavenging layer, characterized in that - the at least one outer layer (A) is a thermoplastic polymer; - the at least one passive oxygen barrier layer (B) is selected from the group consisting of ethylene vinyl alcohol copolymers, polyvinylchloride, copolymers of polyvinyl chloride, polyvinyl alcohol, polyvinylidene dichloride, copolymers of polyvinylidenedichloride, polyacrylonitrils, copolymers of polyacrylonitrils, polyethylene terephthalate, polyethylene naphthalate, polyethylenefuranoate, polysiloxanes, and polyamides; - the at least one active oxygen scavenging layer (C) comprises a) a plastic material which is a polyolefin, a polyolefin copolymer or a polystyrene, and additives (b) and (c), wherein b) is a polyterpenic resin; and c) is a transition metal catalyst.

A process comprises depolymerizing, with 1,4-butane diol, a first polymer comprising a polyethylene terephthalate component in the presence of at least one second polymer selected from the group consisting of polyvinyl chlorides, polyvinylidene chlorides, polyamides, polylactic acid, and combinations thereof to produce a molten mixture; and polymerizing the molten mixture under conditions sufficient to form a modified polybutylene terephthalate copolymer. The modified PBT comprises (a) at least one polyethylene terephthalate component residue, and (b) a member selected from the group consisting of (i) the at least one second polymer selected from the group consisting of polyvinyl chlorides, polyvinylidene chlorides, polyamides, polylactic acid, and combinations thereof; (ii) the at least one residue derived from the second polymer; and (iii) combinations thereof.

The present invention is a poly(vinylidene chloride) interpolymer composition comprising (1) a copolymer of an alpha olefin and an alkyl ester of an unsaturated carboxylic acid and (2) an interpolymer of vinylidene chloride and vinyl chloride, the copolymer being present in an amount effective to improve meat adhesion of a food casing made from the interpolymer composition having the copolymer as compared with a composition having the same proportions of components as the interpolymer composition but without the added copolymer (hereinafter effective amount). Preferably, the copolymer comprises ethylene and at least one alkyl ester of an unsaturated carboxylic acid. The invention is also a process for preparing a thermoplastic food casing which comprises adding an effective amount of a copolymer of an alpha olefin and an alkyl ester of an unsaturated carboxylic acid to a an interpolymer of vinylidene chloride and vinyl chloride to improve meat adhesion of the food casing. Additionally, the invention is a film comprising an interpolymer of vinylidene chloride and vinyl chloride and an effective amount of a copolymer of an alpha olefin and an alkyl ester of an unsaturated carboxylic acid. The film is preferably used in applications for contacting meat. Additionally, the invention is a combination of a film comprising an interpolymer of vinylidene chloride and vinyl chloride and an effective amount of a copolymer of an alpha olefin and an alkyl ester of an unsaturated carboxylic acid and, adjacent thereto or in contact therewith, a fatty substance, preferably a meat having a fat content, meat product having fat content, or other food having a fat content. In another aspect, the invention is a package useful for meats or other fatty substances comprising an interpolymer of vinylidene chloride and vinyl chloride and an effective amount of a copolymer of an alpha olefin and an alkyl ester of an unsaturated carboxylic acid wherein the package is designed for contact of interpolymer of vinylidene chloride with the meat or fatty substance. In another aspect, the invention is a sausage casing having a film comprising an interpolymer of vinylidene and chloride vinyl chloride and an effective amount of a copolymer of an alpha olefin and an alkyl ester of an unsaturated carboxylic acid. In yet another aspect, the invention is the use of a vinylidene chloride interpolymer composition comprising and interpolymer of vinylidene chloride and vinyl chloride and an effective amount of at least one copolymer of an alpha olefin and an alkyl ester of an ethylenically unsaturated carboxylic acid in a composition suitable for making a film, the resulting film, a molded article, a package, in each case preferably suitable for contacting or containing a fatty substance or food, preferably in a sausage casing.

The invention discloses exterior wall putty for a building and a preparing method thereof. The exterior wall putty is prepared from the following materials in weight percentage: 13-16 of chitin, 11-16 of attapulgite, 10-15 of polylactic acid, 82-90 of coarse whiting, 4-8 of polyvinylidene chloride, 10-14 of glutinous rice flour, 5-8 of isobutyl acrylate and 30-40 of quartz powder. The exterior wall putty has excellent adhesiveness, filling property, waterproof performance, strength and moisture absorption, can prevent a wall body from discoloring and falling, is free of poison and safe and achieves environmental friendliness.