38 results about "Vinylchloride polymer" patented technology

The invention discloses a preparation method of vinylidene chloride polymer base mesopore-micropore composite porous charcoal. The method comprises steps of: (1) adding a polyoxyethylene nonyl phenyl ether emulsifier in a nano silicon oxide aqueous dispersion, heating with stirring to reach adsorption balance and obtaining a modified nano silicon oxide aqueous dispersion; (2) adding the modified nano silicon oxide aqueous dispersion and an initiation system into a reaction kettle, heating, adding a mixture of vinylidene chloride and a second monomer and an anion emulsifier drop by drop, and carrying out in situ emulsion polymerization to obtain vinylidene chloride polymer / nano silicon oxide composite particles; (3) charring the vinylidene chloride polymer / nano silicon oxide composite particles at high temperature to obtain a charcoal / nano silicon oxide compound; (4) etching to remove nano silicon oxide in the charcoal / nano silicon oxide compound to prepare the mesopore-micropore composite porous charcoal. The porous charcoal prepared by the method of the invention has mesopore and micropore structures; the mesopores have narrow aperture distribution, large specific surfacearea and large pore volume. Therefore, the porous charcoal has promising application prospect in fields of new energy, environmental protection and industrial catalysis, etc.

An image-forming method: by superposing a heat-sensitive transfer sheet on a heat-sensitive transfer image-receiving sheet so that a receptor layer can be contacted with a thermal transfer layer; and providing thermal energy in accordance with image signals;in which the heat-sensitive transfer image-receiving sheet comprises the receptor layer containing one of polyester and / or polycarbonate polymers, vinyl chloride polymers and / or a polymer latex; andin which the heat-sensitive transfer sheet comprises the thermal transfer layer containing a dye represented by formula (1) or (2):wherein, X141 represents an oxygen atom, a sulfur atom, or NR146; X142 represents a hydroxyl group, a mercapto group, or NHR147; R141 to R154 each represent a hydrogen atom or a substituent; A151 represents a group of atoms necessary to form a hetero ring together with the two carbon atoms; and n153 represents an integer of 0 to 4.

The present disclosure is directed to a thermoplastic polymer for additive manufacturing, wherein the thermoplastic polymer is derived from a chlorinated monomer unit, wherein the thermoplastic polymer has a melt flow rate (MFR) suitable for additive manufacturing. The present disclosure is also directed to a method of making a 3D product formed by additive manufacturing, wherein the 3D product comprises a thermoplastic polymer derived from a chlorinated monomer unit or a thermoplastic composition comprising at least one thermoplastic polymer derived from a chlorinated monomer unit; and at least one stabiliser, wherein the thermoplastic polymer or composition has a MFR suitable for additive manufacturing.

The present invention relates to a method of preparing a vinyl chloride polymer having good thermal stability by restraining a dehydrochlorination reaction due to heat or ultraviolet rays, and a vinyl chloride polymer prepared thereby. According to the preparation method, the adding point of a modifier is controlled, and a vinyl chloride polymer markedly restraining the generation of dehydrochloric acid due to heat or ultraviolet rays may be prepared. Therefore, the preparation method of the vinyl chloride polymer via the emulsion polymerization and the vinyl chloride polymer prepared thereby in the present invention may be readily applied to industries requiring the vinyl chloride polymer such as industries concerning a vinyl chloride resin and a molded article.

The invention discloses a phosphate surfactant, of which the chemical formula is: H-(CF2)m-CH2-O-(CH2CH2O)n-PO(OM)2, wherein m is equal to 2, 4, 6 or 8, n is equal to 0 or 1, and M is NH4+ or Na+. The invention also discloses a method for preparing trifluorochlor oethylene polymer emulsion or solid with the phosphate surfactant as an emulsifier. The surfactant can be used for emulsion polymerization of fluoride-containing monomer. Used as the emulsifier, the surfactant can achieve a high polymerization rate, good dispersion stability, high yield, excellent copolymerization performance and / or multiple particle sizes (including small particle size). Besides, the method can realize polymerization by only using conventional equipment, is easy and convenient to operate and has a low cost, and does not cause environmental pollution during and after reaction.

The invention relates to a vinyl chloride polymer and a preparation method thereof. More specifically, the present invention provides a vinyl chloride polymer having a polydispersity index of 2.0 to 2.3 and a porosity of 60% or more, and a method for preparing the vinyl chloride polymer. The preparation method of the vinyl chloride polymer is specifically the following method: first, a vinyl chloride polymerization seed with a conversion rate of 5% to 20% is prepared by prepolymerization, and then vinyl chloride monomers are introduced into the vinyl chloride polymerization seed to polymerize ( main polymerization) vinyl chloride polymer, at this time, the temperature difference between the pre-polymerization and the main polymerization is controlled at 5°C to 15°C. The preparation method has the effect of improving polymerization productivity, and since the vinyl chloride polymer prepared by the preparation method can exhibit desired physical properties, the preparation method also has the effect of improving fish eye quality and initial coloring performance and having The effect of excellent processability.

The present invention relates to a PVC plastisol composition comprising at least one vinyl chloride polymer selected from polyvinylchlorides and copolymers of vinyl chloride with one or more monomers; at least one plasticizer; at least one epoxy resin; and at least one isocyanate resin blocked with cardanol. The PVC plastisol composition of this invention provides strong adhesion to the surface of various metals or various undercoats of metals by thermal treatment for a short time at 100° C.-200° C. and is excellent in storage stability. In addition, it offers good rheological properties with improved yield value dosing and viscosity stability during applications compared to the nonylphenol blocked isocyanate PVC adhesion promotor.

The invention relates to the technical field of plastic products, in particular to a transparent chlorinated polyethylene thermoplastic material. The technical scheme is that: the transparent chlorinated polyethylene thermoplastic material consists of 80 to 95 mass percent of chloroethylene polymer and 5 to 20 mass percent of chlorinated polyethylene, wherein the chlorinated polyethylene consistsof two kinds of high density chlorinated polyethylene B1 and B2 with different parameters; the high density chlorinated polyethylene B1 accounts for 2.5 to 10 percent of the total mass of the material, and has the chlorine content of 37-42 percent, the residual value of 0-30 percent and the swell value of 10-70 percent; and the high density chlorinated polyethylene B2 accounts for 2.5 to 10 percent of the total mass of the material, and has the chlorine content of 37-42 percent, the residual value of 50-70 percent and the swell value of 1-2 percent. The chlorinated polyethylene has simple components; the preparation method is simple, convenient and low in cost; and the thermoplastic material prepared from the chlorinated polyethylene has good toughness and transparency and good light fastness and weather change resistance.