C08F2/26

Production method for fluoropolymer, surfactant for polymerization, and use of surfactant

A method for producing a fluoropolymer of the invention which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer. The surfactant includes at least one selected from the group consisting of a surfactant represented by R.sup.1a—CO—R.sup.2a—CO—R.sup.3a-A.sup.a and a surfactant represented by R.sup.1b—CO—(CR.sup.2b.sub.2).sub.n—(OR.sup.3b).sub.p—(CR.sup.4b.sub.2).sub.q-L-A.sup.b.

Production method for fluoropolymer, surfactant for polymerization, and use of surfactant

A method for producing a fluoropolymer of the invention which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer. The surfactant includes at least one selected from the group consisting of a surfactant represented by R.sup.1a—CO—R.sup.2a—CO—R.sup.3a-A.sup.a and a surfactant represented by R.sup.1b—CO—(CR.sup.2b.sub.2).sub.n—(OR.sup.3b).sub.p—(CR.sup.4b.sub.2).sub.q-L-A.sup.b.

CROSSLINKABLE REACTIVE SILICONE ORGANIC COPOLYMERS DISPERSIONS

An aqueous dispersion along with methods for producing and uses for the same. Where the aqueous dispersion includes crosslinkable reactive silicone organic copolymers of ethylenically unsaturated monomers and of ethylenically functionalized silicone polymers and is obtainable by means of radically initiated miniemulsion polymerization in an aqueous medium.

CROSSLINKABLE REACTIVE SILICONE ORGANIC COPOLYMERS DISPERSIONS

An aqueous dispersion along with methods for producing and uses for the same. Where the aqueous dispersion includes crosslinkable reactive silicone organic copolymers of ethylenically unsaturated monomers and of ethylenically functionalized silicone polymers and is obtainable by means of radically initiated miniemulsion polymerization in an aqueous medium.

PROCESS FOR PREPARING FLUOROPOLYMERS AND FLUOROELASTOMERS IN PRESENCE OF A NON FLUORINATED SULFONATE TYPE HYDROCARBON CONTAINING SURFACTANT THEREOF

The present invention relates to a process for preparing fluoropolymers or fluoroelastomers in an aqueous medium using a non fluorinated sulfonate type hydrocarbon containing surfactant, said process comprising the steps of: (a) forming an aqueous solution comprising an non-fluorinated, hydrocarbon containing, sulfonate anionic type surfactant in a polymerization reactor; (b) pressurizing the reactor with fluoromonomers to form an aqueous emulsion; (c) initiating polymerization of said fluoromonomers; and (d) Propagating the reaction (e) Terminating the reaction after consumption of desired weight of fluoromonomers; wherein the non-fluorinated, hydrocarbon containing, sulfonate type surfactant comprises 18 to 36 carbon atoms, wherein the molecular weight of the fluoropolymer ranges from 1×10.sup.3 to 9×10.sup.8 g/mol and wherein said process is devoid of passivating the surfactant.

PROCESS FOR PREPARING FLUOROPOLYMERS AND FLUOROELASTOMERS IN PRESENCE OF A NON FLUORINATED SULFONATE TYPE HYDROCARBON CONTAINING SURFACTANT THEREOF

The present invention relates to a process for preparing fluoropolymers or fluoroelastomers in an aqueous medium using a non fluorinated sulfonate type hydrocarbon containing surfactant, said process comprising the steps of: (a) forming an aqueous solution comprising an non-fluorinated, hydrocarbon containing, sulfonate anionic type surfactant in a polymerization reactor; (b) pressurizing the reactor with fluoromonomers to form an aqueous emulsion; (c) initiating polymerization of said fluoromonomers; and (d) Propagating the reaction (e) Terminating the reaction after consumption of desired weight of fluoromonomers; wherein the non-fluorinated, hydrocarbon containing, sulfonate type surfactant comprises 18 to 36 carbon atoms, wherein the molecular weight of the fluoropolymer ranges from 1×10.sup.3 to 9×10.sup.8 g/mol and wherein said process is devoid of passivating the surfactant.

PROCESS FOR PREPARING FLUOROPOLYMERS AND FLUOROELASTOMERS IN PRESENCE OF A NON FLUORINATED SULFONATE TYPE HYDROCARBON CONTAINING SURFACTANT THEREOF

The present invention relates to a process for preparing fluoropolymers or fluoroelastomers in an aqueous medium using a non fluorinated sulfonate type hydrocarbon containing surfactant, said process comprising the steps of: (a) forming an aqueous solution comprising an non-fluorinated, hydrocarbon containing, sulfonate anionic type surfactant in a polymerization reactor; (b) pressurizing the reactor with fluoromonomers to form an aqueous emulsion; (c) initiating polymerization of said fluoromonomers; and (d) Propagating the reaction (e) Terminating the reaction after consumption of desired weight of fluoromonomers; wherein the non-fluorinated, hydrocarbon containing, sulfonate type surfactant comprises 18 to 36 carbon atoms, wherein the molecular weight of the fluoropolymer ranges from 1×10.sup.3 to 9×10.sup.8 g/mol and wherein said process is devoid of passivating the surfactant.

TRANSPARENT THERMOPLASTIC RESIN AND METHOD OF PREPARING THE SAME

The present disclosure relates to a thermoplastic resin having excellent non-whitening properties, impact strength, gloss, and fluidity, and a method of preparing the thermoplastic resin. The thermoplastic resin includes an alkyl acrylate-alkyl methacrylate graft copolymer (A), or the copolymer (A) and a matrix resin (B) including one or more selected from the group consisting of an aromatic vinyl compound-vinyl cyanide compound-alkyl methacrylate copolymer and an alkyl methacrylate polymer. A transparency measured under a condition of 3 mm thickness is less than 5, the total content of the alkyl acrylate is 20 to 50% by weight, and an alkyl acrylate coverage value (X) as calculated by Equation 1 below is 65 or more:


X={(G−Y)/Y}×100,  [Equation 1] wherein G represents the total gel content (%) of the thermoplastic resin, and Y represents the content of alkyl acrylate in the gel contained in the thermoplastic resin.

METHOD FOR PREPARING BIODEGRADABLE LATEX COMPOSITION FOR DIP FORMING
20230054173 · 2023-02-23 ·

Provided is a method for preparing a latex composition for dip forming, the method including: (a) preparing a monomer mixture including a conjugated diene-based monomer, an ethylenically unsaturated nitrile monomer and an ethylenically unsaturated acid monomer; (b) introducing starch, an emulsifier and an inorganic solvent into the monomer mixture; and (c) preparing a copolymer latex by introducing a polymerization initiator, wherein the copolymer includes the starch in a main chain thereof.

METHOD FOR PREPARING BIODEGRADABLE LATEX COMPOSITION FOR DIP FORMING
20230054173 · 2023-02-23 ·

Provided is a method for preparing a latex composition for dip forming, the method including: (a) preparing a monomer mixture including a conjugated diene-based monomer, an ethylenically unsaturated nitrile monomer and an ethylenically unsaturated acid monomer; (b) introducing starch, an emulsifier and an inorganic solvent into the monomer mixture; and (c) preparing a copolymer latex by introducing a polymerization initiator, wherein the copolymer includes the starch in a main chain thereof.