The invention relates to a sulfur-crosslinkable rubber mixture, to a vulcanizate thereof and to a vehicle tire. The sulfur-crosslinkable rubber mixture contains at least the following constituents: at least one diene rubber; and 10 to 300 phr of at least one silica; and 1 to 22 phf of at least one silane A having general empirical formula A-I)

(R.sup.1).sub.oSiR.sup.2(SR.sup.3).sub.qS.sub.x(R.sup.3S).sub.qR.sup.2Si(R.sup.1).sub.o; and A-I) 0.5 to 30 phf of at least one silane B having general empirical formula B-I)

(R.sup.1).sub.oSiR.sup.2(SR.sup.3).sub.uSR.sup.2Si(R.sup.1).sub.0 B-I) wherein x is an integer from 2 to 10, q is 0, 1, 2 or 3 and u is 1, 2 or 3.

The invention relates to a sulfur-crosslinkable rubber mixture, to a vulcanizate thereof and to a vehicle tire. The sulfur-crosslinkable rubber mixture contains at least the following constituents: at least one diene rubber; and 10 to 300 phr of at least one silica; and 1 to 22 phf of at least one silane A having general empirical formula A-I)

(R.sup.1).sub.oSiR.sup.2(SR.sup.3).sub.qS.sub.x(R.sup.3S).sub.qR.sup.2Si(R.sup.1).sub.o; and A-I) 0.5 to 30 phf of at least one silane B having general empirical formula B-I)

(R.sup.1).sub.oSiR.sup.2(SR.sup.3).sub.uSR.sup.2Si(R.sup.1).sub.0 B-I) wherein x is an integer from 2 to 10, q is 0, 1, 2 or 3 and u is 1, 2 or 3.

The invention relates to a screw extruder (29) having a housing (30) comprising an intake housing (4), a degassing housing (5), and at least one housing bore (21, 22) running in the interior of the degassing housing (5) and implementing at least one internal wall segment (25; 26; 27; 28) of the degassing housing (5) and serving for receiving at least one auger shaft (7), and wherein the at least one wall segment (25; 26; 27; 28) of the at least one housing bore (21, 22) comprises at least one partition wall (13, 33) protruding into the at least one housing bore (21, 22) in the region of the degassing housing (5), and wherein at least one filter element (8) is disposed in the interior of the degassing housing (5) and at least partially encompasses the at least one auger shaft (7) and bears on the partition wall (13) in regions for implementing at least two spatial pressure regions (11, 12) sealed off from each other.

The present invention relates to a mixing apparatus. A production unit produces a working fluid that is in a supercritical state or a subcritical state. A storage unit stores a material. A dissolving unit dissolves the material in the working fluid. A mixer mixes the material together in the presence of the working fluid. A material feed valve opens or closes a flow passage through which the material is to pass to be fed from the storage unit into the dissolving unit. A working fluid inflow valve opens or closes a flow passage through which the working fluid is to pass to flow into the dissolving unit from the production unit. A mixer inflow valve opens or closes a flow passage through which the working fluid and the material are to pass to flow into the mixer from the dissolving unit.

Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of 20 C. to 80 C. and satisfying the following formula (I):
(Tip clearance d of kneading machine).sup.3(Volume V of polymer ready for introduction into kneading machine)2.010.sup.4 cm.sup.3(I).

A process and device continuously prepare a filled rubber masterbatch. The process comprises bringing into contact, in a mixing zone, a first liquid-phase flow and a second liquid-phase flow, the first flow being an elastomer emulsion, the second flow being an aqueous suspension of filler particles, such that one of the two flows emerges inside the other flow and that the two flows are transported at low pressure before they are brought into contact.

The invention relates to a sulfur-crosslinkable rubber mixture, to the vulcanizate thereof, and to a vehicle tire. The rubber mixture according to the invention comprises at least the following constituents: at least one diene rubber; and, at least one char (HTC char) obtained by hydrothermal carbonization of at least one starting substance. A vehicle tire according to the invention comprises at least one vulcanizate according to the invention of the rubber mixture in at least one component.

There is provided a kneading device for dispersing a dispersoid in a non-conductive material. The kneading device includes a pressure measurement unit that has a pressure receiving portion which comes into contact with a kneading substance formed of the non-conductive material and the dispersoid, and that measures a pressure value applied to the kneading substance formed of the non-conductive material and the dispersoid, and a determination unit that determines a dispersed state of the dispersoid dispersed in the non-conductive material, based on the pressure value measured by the pressure measurement unit.

A mixer control device having a function of a monitoring device acquires measurement data of monitoring target information that is obtained through measurement when a rubber material is kneaded by a mixer. In addition, the mixer control device compares the measurement data and reference data that is selected in past measurement data of the monitoring target information and performs abnormality determination. The mixer control device acquires measurement data that is measured from predetermined mixing operation initiation timing in a series of mixing operations of a rubber material in the mixer for every unit of the series of mixing operation.

A mixing apparatus includes a mixer configured to mix a material including a rubber or a resin in the presence of a working fluid that is in a supercritical state or a subcritical state. The mixer includes a chamber that forms a flow passage for the working fluid and the material, and a mixing blade disposed in the chamber and fixed to the chamber.