The present invention relates to a method for manufacturing of partially fluorinated polymers, notably vinylidene fluoride (VDF)-based polymers, in emulsion polymerization, and to a polymer obtained from said method.

To provide a rubber composition in which wet performance, wear resistance, low rolling resistance, and breaking resistance are highly balanced. A rubber composition comprising a rubber component comprising at least three polymers and a filler, wherein the rubber component is separated into at least two polymer phases: a polymer phase (1) with the highest tan δ peak temperature; and a polymer phase (2) with the lowest peak temperature; the polymer phases (1) and (2) are incompatible with each other; the polymer phase (1) at least comprises the modified conjugated diene-based polymers (A1) and (A2), and the filler; the modified conjugated diene-based polymer (A1) has a particular weight-average molecular weight and a particular contracting factor (g′); and when a filler concentration and an average aggregate area of the filler in the polymer phase (1) are defined as X and Y, respectively, an formula (1): Y<4.8X+1200 is satisfied.

To provide a rubber composition in which wet performance, wear resistance, low rolling resistance, and breaking resistance are highly balanced. A rubber composition comprising a rubber component comprising at least three polymers and a filler, wherein the rubber component is separated into at least two polymer phases: a polymer phase (1) with the highest tan δ peak temperature; and a polymer phase (2) with the lowest peak temperature; the polymer phases (1) and (2) are incompatible with each other; the polymer phase (1) at least comprises the modified conjugated diene-based polymers (A1) and (A2), and the filler; the modified conjugated diene-based polymer (A1) has a particular weight-average molecular weight and a particular contracting factor (g′); and when a filler concentration and an average aggregate area of the filler in the polymer phase (1) are defined as X and Y, respectively, an formula (1): Y<4.8X+1200 is satisfied.

A two-component silicone composition including a component (A) including at least one hydroxyl-terminated polydiorganosiloxane (P); preferably at least one filler; between 0.05% and 5.0% by weight of emulsified water, based on component (A); and a component (B) including at least one noncondensable polydiorganosiloxane (W) as a plasticizer; at least one organosilane (V) as a crosslinker; at least one catalyst (K) for the crosslinking of polydiorganosiloxanes; wherein all organosilanes (V) preferably have the same hydrolyzable alkoxysilane groups, preferably methoxysilane groups; and catalyst (K) is a tin complex having two mercaptide ligands of formula (V), where ligands (L.sup.1) are each independently alkyl mercaptides coordinated via sulfur, especially C.sub.6 to C.sub.16 alkyl mercaptides, where ligands (L.sup.1) optionally have methyldialkoxysilane groups, preferably methyldimethoxysilane groups, and ligands (L.sup.2) are each independently alkyl ligands, especially C.sub.6 to C.sub.14 alkyl ligands; and component (B) contains less than 5% by weight of carbon black based on component (B).

A two-component silicone composition including a component (A) including at least one hydroxyl-terminated polydiorganosiloxane (P); preferably at least one filler; between 0.05% and 5.0% by weight of emulsified water, based on component (A); and a component (B) including at least one noncondensable polydiorganosiloxane (W) as a plasticizer; at least one organosilane (V) as a crosslinker; at least one catalyst (K) for the crosslinking of polydiorganosiloxanes; wherein all organosilanes (V) preferably have the same hydrolyzable alkoxysilane groups, preferably methoxysilane groups; and catalyst (K) is a tin complex having two mercaptide ligands of formula (V), where ligands (L.sup.1) are each independently alkyl mercaptides coordinated via sulfur, especially C.sub.6 to C.sub.16 alkyl mercaptides, where ligands (L.sup.1) optionally have methyldialkoxysilane groups, preferably methyldimethoxysilane groups, and ligands (L.sup.2) are each independently alkyl ligands, especially C.sub.6 to C.sub.14 alkyl ligands; and component (B) contains less than 5% by weight of carbon black based on component (B).

A mechanical agitation-free method of making a homogeneous mixture of polyvinyl chloride solids and at least one liquid additive and/or particulate solid additive without mechanically-agitating or melting the polyvinyl chloride solids during the making. The method comprises applying acoustic energy at a frequency of from 20 to 100 hertz to a heterogeneous mixture comprising the polyvinyl chloride solids and the liquid additive and/or particulate solid additive for a period of time sufficient to substantially intermix the polyvinyl chloride solids and the liquid additive and/or particulate solid additive, while maintaining temperature of the heterogeneous mixture above the freezing point of the liquid additive, below the melting point of the particulate solid additive, and below the melting temperature of the polyvinyl chloride solids, thereby making the homogeneous mixture without mechanically-agitating or melting the polyvinyl chloride solids.

A mechanical agitation-free method of making a homogeneous mixture of polyvinyl chloride solids and at least one liquid additive and/or particulate solid additive without mechanically-agitating or melting the polyvinyl chloride solids during the making. The method comprises applying acoustic energy at a frequency of from 20 to 100 hertz to a heterogeneous mixture comprising the polyvinyl chloride solids and the liquid additive and/or particulate solid additive for a period of time sufficient to substantially intermix the polyvinyl chloride solids and the liquid additive and/or particulate solid additive, while maintaining temperature of the heterogeneous mixture above the freezing point of the liquid additive, below the melting point of the particulate solid additive, and below the melting temperature of the polyvinyl chloride solids, thereby making the homogeneous mixture without mechanically-agitating or melting the polyvinyl chloride solids.

A mechanical agitation-free method of making a homogeneous mixture of polyvinyl chloride solids and at least one liquid additive and/or particulate solid additive without mechanically-agitating or melting the polyvinyl chloride solids during the making. The method comprises applying acoustic energy at a frequency of from 20 to 100 hertz to a heterogeneous mixture comprising the polyvinyl chloride solids and the liquid additive and/or particulate solid additive for a period of time sufficient to substantially intermix the polyvinyl chloride solids and the liquid additive and/or particulate solid additive, while maintaining temperature of the heterogeneous mixture above the freezing point of the liquid additive, below the melting point of the particulate solid additive, and below the melting temperature of the polyvinyl chloride solids, thereby making the homogeneous mixture without mechanically-agitating or melting the polyvinyl chloride solids.

The present invention provides a chlorinated polyvinyl chloride resin composition capable of providing a molded article that is excellent in discoloration resistance and corrosion resistance and is not likely to cause environmental pollution as the amount of metal leached therefrom is small, and a chlorinated polyvinyl chloride resin molded article. The present invention relates to a chlorinated polyvinyl chloride resin composition containing: a chlorinated polyvinyl chloride resin; a thermal stabilizer; and at least one thioglycolic acid compound selected from the group consisting of thioglycolic acid and thioglycolic acid esters.

The present invention provides a chlorinated polyvinyl chloride resin composition capable of providing a molded article that is excellent in discoloration resistance and corrosion resistance and is not likely to cause environmental pollution as the amount of metal leached therefrom is small, and a chlorinated polyvinyl chloride resin molded article. The present invention relates to a chlorinated polyvinyl chloride resin composition containing: a chlorinated polyvinyl chloride resin; a thermal stabilizer; and at least one thioglycolic acid compound selected from the group consisting of thioglycolic acid and thioglycolic acid esters.