Provided are processes for making a polymer composition comprising (i) providing a multistage polymer latex by emulsion polymerization in the presence of a phosphate surfactant, wherein the multistage polymer comprises (a) a first stage polymer having a T.sub.g of 20 C. or lower, and (b) a final stage polymer having a T.sub.g of 50 C. or higher, (ii) coagulating the multistage polymer latex, (iii) treating the coagulated multistage polymer with an alkaline phosphate, (iv) drying the coagulated multistage polymer to a water content of less than 1 weight % based on the dry weight of the multistage polymer, wherein the weight of the dried multistage polymer comprises 100 ppm or more, based on the dry weight of the multistage polymer, of phosphorous that is in the form of an alkaline phosphate. Also provided are processes for making matrix resin compositions comprising such polymer compositions and a matrix resin.

Provided are polymer compositions polymer composition comprising (i) one or more multistage polymers comprising (a) a first stage polymer having a T.sub.g of 20 C. or lower, and (b) a final stage polymer having a T.sub.g of 50 C. or higher, (ii) one or more phosphate surfactant in an amount of 50 ppm or more, based on the dry weight of the multistage polymer, and (iii) one or more alkaline phosphate in an amount of 100 ppm or more, measured as the weight of phosphorous, based on the dry weight of the multistage polymer. Also provided are matrix resin compositions comprising such polymer compositions and a matrix resin.

Described are an ethylene-vinyl alcohol (EVOH) copolymer composition, and a preparation method therefor. The composition contains an EVOH copolymer, element potassium, and element sodium, wherein the mass ratio of element sodium to element potassium is 0.1:1 to 1:1. By controlling the contents of element sodium and element potassium in an EVOH resin composition to fall within a specific proportion range, the heat resistance of the resulting EVOH resin composition is greatly improved, the initial decomposition temperature can be increased to 370-400 C., the maximum decomposition temperature can be increased to 400-440 C., and thus EVOH resin can adapt to the process requirement for a higher processing temperature. Moreover, further adding acyl-containing carboxylic acid and a phosphorus-containing compound/boron-containing compound can improve the thermal yellowing resistance of the EVOH resin composition, where the value of the yellowing index (YI) after 5-hour thermal treatment at 150 C., is increased by 15 or less.

This application relates to ink compositions, in particular ink compositions for use in continuous inkjet printing. The ink compositions are suitable for producing printed images for example with reduced printer error and good adhesion to low surface energy substrates, in particular, low energy substrates such as polypropylene, LDPE and HDPE. The ink composition contains a liquid carrier and carbon black. The ink composition has a surface resistance of at least 2 M/sq after washing the printed deposit with the liquid carrier and an adhesion of 50% or more after applying an adhesive tape to the printed deposit and removing the adhesive tape.

A thermoplastic polyester resin composition includes a thermoplastic polyester resin (A), an epoxy compound (B) having an epoxy equivalent of from 200 to 3,000 g/eq, and a hydroxy group-containing resin (C) having a number average molecular weight of from 2,000 to 500,000 and a halogen element content of 1,000 ppm or less, wherein the epoxy compound (B) is blended in an amount of from 0.05 to 10 parts by weight with respect to 100 parts by weight in total of 70 to 99.9 parts by weight of the thermoplastic polyester resin (A) and 0.1 to 30 parts by weight of the hydroxy group-containing resin (C). The thermoplastic resin composition and a molded article achieve both long-term hydrolysis resistance and heat aging resistance at a high level, and can further suppress bleed-out to the surface of the molded article during heat-dry and heat-moisture treatments.

An aqueous anti-rust surface treatment composition used for forming a film on a surface of a metal member of the present invention contains a silane coupling agent; a water-soluble transition metal compound containing a water-soluble titanium compound or a water-soluble zirconium compound; a condensed phosphate; and a solvent containing water, in which the condensed phosphate contains a highly condensed phosphate which is a salt of high condensate of equal to or more than four phosphoric acids.

The present invention relates to activated and ground sodium hexametaphosphate frit particles and antimicrobial composite material comprising said activated and ground sodium hexametaphosphate frit particles embedded in a thermoplastic polymer such as low density polyethylene (LDPE). The invention also relates to the method for obtaining the composite material of the invention and a thermal activation method for the thermal activation of a sodium hexametaphosphate salt in order to generate the activated and ground sodium hexametaphosphate frit particles. The antimicrobial material of the invention is preferably used in the food industry.

This application relates to ink compositions, in particular ink compositions for use in continuous inkjet printing. The ink compositions are suitable for producing printed images for example with reduced printer error and good adhesion to low surface energy substrates, in particular, low energy substrates such as polypropylene, LDPE and HDPE. The ink composition contains a liquid carrier and carbon black. The ink composition has a surface resistance of at least 2M/sq after washing the printed deposit with the liquid carrier and an adhesion of 50 % or more after applying an adhesive tape to the printed deposit and removing the adhesive tape.

This application relates to an ink composition, in particular an ink composition for use in continuous inkjet printing. The ink composition for use in continuous inkjet printing, contains a siloxane surfactant and a metal conductivity salt. The ink composition is suitable for producing printed images with good adhesion to low surface energy substrates, in particular, low energy substrates such as polypropylene, LDPE and HDPE. The ink composition has a liquid carrier, a colourant, a siloxane surfactant and a metal conductivity salt. The siloxane surfactant is present in an amount greater than 0.1% by weight of the ink composition.

The invention comprises synergistic compositions of at least one metal polycarboxylate and lithium phosphate. The synergistic compositions are designed to be added to film-forming or other compositions to reduce the corrosion of various metal surfaces or substrates on which the synergistic compositions are applied.