9 results about "Vinylidene Chlorides" patented technology

A water-repellent composition capable of imparting both favorable water-repellency and favorable slip resistance to a textile product is provided by A water-repellent composition comprising a non-fluorine copolymer (A) comprising a repeating unit derived from a hydrophobic monomer (a1) having a hydrocarbon group having 2 to 40 carbon atoms, and a repeating unit derived from at least one chloride monomer (a2) selected from the group consisting of vinyl chloride and vinylidene chloride, wherein in the non-fluorine copolymer (A), an amount of repeating units derived from the monomer (a2) is 1 to 9% by weight based on a sum of an amount of repeating units derived from the monomer (a1) and the amount of repeating units derived from the monomer (a2).

A water-repellent composition including: a non-fluorine copolymer (A) having a repeating unit derived from a hydrophobic monomer (a1) having a hydrocarbon group having 2 to 40 carbon atoms, and a repeating unit derived from at least one chloride monomer (a2) selected from the group consisting of vinyl chloride and vinylidene chloride; and an isocyanate derivative (B), where, in the non-fluorine copolymer (A), an amount of repeating units derived from the monomer (a2) is 1 to 15% by weight based on a sum of an amount of repeating units derived from the monomer (a1) and the amount of repeating units derived from the monomer (a2).

An aqueous latex [latex (L)] of a vinylidene chloride copolymer [copolymer (A)], wherein the copolymer (A) consists essentially ofrecurring units derived from vinylidene chloride (VDC) in an amount comprised between 89.0 and 91.0 wt % of the copolymer,recurring units derived from methacrylonitrile (MAN) in an amount comprised between 2.00 and 5.50 wt % of the copolymer,recurring units derived from at least one ionic comonomer (ICO) in an amount comprised between 0.5 and 1.4 wt % of the copolymer (A), andrecurring units derived from methylmethacrylate (MMA) in an amount such that the total of recurring units of VDC, MAN, ICO and MMA is 100 wt %,and wherein the latex (L) comprises at least one surfactant [surfactant (S)] in an amount comprised between 0.09 and 1.50 wt % of the copolymer (A).Process for the manufacture of the aqueous latex (L), film made therefrom and retort pouch prepared with such film.

This invention discloses an interpenetrating network type PVDC emulsion, which is prepared by weight of the following components: 650-850 parts of vinylidene chloride monomer, 20-60 parts of styrene, 2-6 parts of organosilicon monomer, 25-55 parts of acrylate phosphate monomer, 3-5.5 parts of crosslinking monomer, 10-25 parts of hydrophilic monomer, 100-150 parts of comonomer, 10-30 parts of emulsifier, 0.5-1.5 parts of initiator, and 550-750 parts of deionized water. This invention has the advantages of simple process, good product stability, high barrier performance, excellent adhesion, and good water resistance.

Provided is a water repellent composition containing: a non-fluorinated copolymer (A) containing a repeating unit derived from a hydrophobic monomer (a1) having a C2-40 hydrocarbon group and a repeating unit derived from a chloride monomer (a2) being at least one type selected from the group consisting of vinyl chloride and vinylidene chloride; and an isocyanate derivative (B). In the non-fluorocopolymer (A), the amount of a repeating unit derived from the monomer (a2) is 1-15 wt% with respect to the total of the amount of the repeating unit derived from the monomer (a1) and the content of the repeating unit derived from the monomer (a2).

Provided is a water repellent composition containing a non-fluorinated copolymer (A) containing a repeating unit derived from a hydrophobic monomer (a1) having a C2-40 hydrocarbon group and a repeating unit derived from a chloride monomer (a2) that is at least one type selected from the group consisting of vinyl chloride and vinylidene chloride. In the non-fluorocopolymer (A), the amount of a repeating unit derived from the monomer (a2) is 1-9 wt% with respect to the total of the amount of the repeating unit derived from the monomer (a1) and the amount of the repeating unit derived from the monomer (a2).

Method for making a carbon molecular sieves described herein may include applying an adhesive to exterior surfaces of polymeric hollow fibers at a first end of a plurality of polymeric hollow fibers, wherein the polymeric hollow fibers include polyimide, polyvinylidene chloride, or a combination thereof, and wherein the adhesive includes at least 75 wt. % polyimide, polyvinylidene chloride, or a combination thereof, based on the total weight of the adhesive; curing the adhesive on the exterior surfaces of the polymeric hollow fibers to form a carbon molecular sieve precursor; and pyrolyzing the carbon molecular sieve precursor to form a carbon molecular sieve, wherein the carbon molecular sieve includes a plurality of carbon hollow fibers and a carbonaceous adhesive residue on a first end of the plurality of carbon fibers.

This invention belongs to the field of polymer materials technology, specifically relating to polyethylene rotational molding resin powder for high-pressure hydrogen storage cylinder linings and its preparation method. The polyethylene rotational molding resin powder for high-pressure hydrogen storage cylinder linings of this invention is composed of the following raw materials: polyethylene, POE, polyvinylidene chloride, antioxidant, acid scavenger, lubricant, and modified boron nitride; the polyethylene rotational molding resin powder has a melt flow rate of 4.8–5.7 g / 10 min and a density of 0.932–0.938 g / cm³. 3 The bulk density is 0.39–0.45 g / cm³. 3 The flow time is 18–23 s / 100g, the particle size distribution is 40–60 mesh with 50%–65% of the particles, and the hydrogen permeability coefficient is 0.65–0.85 mol·m / (m 2 ·s·Pa)×10 ‑15 It has high bulk density, short dry flow time, reasonable particle size distribution, and low hydrogen permeability coefficient.

The invention discloses a high-performance PVDC (polyvinyl dichloride) preparation method based on microemulsion polymerization, and belongs to the technical field of PVDC emulsion polymerization, and the method comprises the following steps: preparing materials, pretreating raw materials, building and debugging a reaction device, dropwise adding an initiator, controlling a reaction process, and post-treating after the reaction is finished. According to the invention, the vinylidene chloride monomer is used as a core raw material, and the performance of PVDC is accurately regulated and controlled by adjusting the emulsifier and the co-emulsifier; free radical polymerization is initiated by an initiator, so that the PVDC emulsion with narrow particle size distribution and high crystallinity can be prepared; the reaction system is stable, the gel phenomenon is reduced, the monomer conversion rate is improved, and the production cost can be greatly reduced; the prepared PVDC product is uniform in particle size, the barrier property is remarkably improved, the shelf life of food is effectively prolonged, the requirements of multiple fields such as electronic protection and medicine packaging can be met, the application range is greatly expanded, a high-performance and reliable packaging material is provided for the industries such as food and medicine, and the economic benefits of enterprises are remarkably improved.