A process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating the fluoropolymer from the aqueous medium to obtain fluoropolymer resin. The process comprises contacting the aqueous fluoropolymer dispersion with sorbent.

A process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating the fluoropolymer from the aqueous medium to obtain fluoropolymer resin. The process comprises contacting the aqueous fluoropolymer dispersion with sorbent.

This application relates to biodegradable graft polymers for use as dye transfer inhibitors especially in laundry applications.

The graft polymers of the invention comprise a polyalkylene oxide polymer as polymer backbone of the graft polymer and grafted side chains obtained from radically polymerizing at least one vinyl ester, at least one vinylimidazole-monomer or derivative thereof in amounts of more than 10 weight percent being based on the total weight of the graft polymer, and optionally at least one vinyl lactame in the presence of the polymer backbone.

The inventive graft polymers exhibit dye transfer inhibition properties; as they also are bio-degradable, they are useful polymers for laundry cleaning applications to prevent dye transfer.

The invention further relates to the production of such graft polymers.

Furthermore, the present invention relates to the use of such a graft polymer within fabric and home care products, and the use of such graft polymers for inhibiting the dye transfer in laundry applications.

This invention also relates to fabric and home care products as such containing such a graft polymer.

This application relates to biodegradable graft polymers for use as dye transfer inhibitors especially in laundry applications.

The graft polymers of the invention comprise a polyalkylene oxide polymer as polymer backbone of the graft polymer and grafted side chains obtained from radically polymerizing at least one vinyl ester, at least one vinylimidazole-monomer or derivative thereof in amounts of more than 10 weight percent being based on the total weight of the graft polymer, and optionally at least one vinyl lactame in the presence of the polymer backbone.

The inventive graft polymers exhibit dye transfer inhibition properties; as they also are bio-degradable, they are useful polymers for laundry cleaning applications to prevent dye transfer.

The invention further relates to the production of such graft polymers.

Furthermore, the present invention relates to the use of such a graft polymer within fabric and home care products, and the use of such graft polymers for inhibiting the dye transfer in laundry applications.

This invention also relates to fabric and home care products as such containing such a graft polymer.

The present invention provides a method for preparing a vinyl chloride-based polymer, the method including (1) polymerizing a vinyl chloride-based monomer in the presence of a vinyl chloride-based first seed particle, a vinyl chloride-based second seed particle, and an emulsifier and (2) separating, after the polymerizing, a first vinyl chloride-based polymer and a second vinyl chloride-based polymer which are in a particulate form, wherein the separated first vinyl chloride-based polymer is dried using a fluid bed dryer (FBD), and the first vinyl chloride-based polymer has a smaller average particle diameter (D.sub.50) than the second vinyl chloride-based polymer, and two kinds of polymers having different physical properties may be prepared through a single manufacturing process.

The present invention provides a method for preparing a vinyl chloride-based polymer, the method including (1) polymerizing a vinyl chloride-based monomer in the presence of a vinyl chloride-based first seed particle, a vinyl chloride-based second seed particle, and an emulsifier and (2) separating, after the polymerizing, a first vinyl chloride-based polymer and a second vinyl chloride-based polymer which are in a particulate form, wherein the separated first vinyl chloride-based polymer is dried using a fluid bed dryer (FBD), and the first vinyl chloride-based polymer has a smaller average particle diameter (D.sub.50) than the second vinyl chloride-based polymer, and two kinds of polymers having different physical properties may be prepared through a single manufacturing process.

The present invention provides a method for preparing a vinyl chloride-based polymer, the method including (1) polymerizing a vinyl chloride-based monomer in the presence of a vinyl chloride-based first seed particle, a vinyl chloride-based second seed particle, and an emulsifier and (2) separating, after the polymerizing, a first vinyl chloride-based polymer and a second vinyl chloride-based polymer which are in a particulate form, wherein the separated first vinyl chloride-based polymer is dried using a fluid bed dryer (FBD), and the first vinyl chloride-based polymer has a smaller average particle diameter (D.sub.50) than the second vinyl chloride-based polymer, and two kinds of polymers having different physical properties may be prepared through a single manufacturing process.

The invention is related to a process for synthesizing a polymer for various uses including as a tackifying composition. The process comprises providing a reactant mixture for conducting multistep reactions to produce products with high selectivity and yields. The reactant mixture comprises a first compound comprising at least one carbon-carbon double bond or a precursor therefor; a heat transfer fluid; and at least one stabilizer. The process comprises reacting the first compound or the precursor with a first intermediate mixture in the presence of a heat transfer agent to provide a monomer composition. Optionally the obtained monomer composition may be fractionated. Then, the process involves polymerising one or more fractions of the monomer composition to provide the polymer composition that can be tuned to be tackifying or longer chain.

The invention is related to a process for synthesizing a polymer for various uses including as a tackifying composition. The process comprises providing a reactant mixture for conducting multistep reactions to produce products with high selectivity and yields. The reactant mixture comprises a first compound comprising at least one carbon-carbon double bond or a precursor therefor; a heat transfer fluid; and at least one stabilizer. The process comprises reacting the first compound or the precursor with a first intermediate mixture in the presence of a heat transfer agent to provide a monomer composition. Optionally the obtained monomer composition may be fractionated. Then, the process involves polymerising one or more fractions of the monomer composition to provide the polymer composition that can be tuned to be tackifying or longer chain.

A process for producing protective-colloid-stabilized polymers based on ethylenically unsaturated monomers in the form of water-redispersible powders, by producing aqueous dispersions of protective-colloid-stabilized polymers based on ethylenically unsaturated monomers by polymerization of one or more ethylenically unsaturated monomers in an aqueous medium and drying said dispersions in the presence of one or more drying aids. The drying aids include a) one or more inorganic salts selected from the group of alkali metal sulfates and alkali metal sulfites and b) optionally one or more water-soluble organic polymers. The inorganic salts a) are present in the aqueous dispersions of the protective-colloid-stabilized polymers based on ethylenically unsaturated monomers in dissolved form after all drying aids have been added. The inorganic salts a) are employed as drying aids to an extent of 25% by weight based on the total weight of the drying aids.