A single-screw extrusion desulfurization and post-processing system and a method for preparing reclaimed rubber. The single-screw extrusion desulfurization and post-processing system comprises: a single-screw desulfurization device, a single-screw post-processing device and a closed connection device for connecting the single-screw desulfurization device and the single-screw post-processing device, the single-screw post-processing device includes a post-processing feeding unit and a post-processing unit which are connected with each other, and a post-processing screw running through the post-processing feeding unit and the post-processing unit.

Processes for recovering natural rubber from an aqueous natural rubber latex that contains extractables and one or more additives and that is essentially free of lignocellulosic plant material are described. Natural rubber in the latex is separated from the water. Preferably, the amount of non-rubber extractables in the natural rubber is reduced by one or more extraction steps yielding a dried natural rubber.

Processes for recovering natural rubber from an aqueous natural rubber latex that contains extractables and one or more additives and that is essentially free of lignocellulosic plant material are described. Natural rubber in the latex is separated from the water. Preferably, the amount of non-rubber extractables in the natural rubber is reduced by one or more extraction steps yielding a dried natural rubber.

Provided herein are organic solvent-based processes for the removal of rubber from non-Hevea plants such as guayule shrubs. By the use of the processes, solid purified rubber can be obtained that contains 0.05-0.5 weight % dirt, 0.2-1.5 weight % ash, and 0.1-4 weight % resin (when it has been dried so as to contain 0.8 weight % volatile matter).

Provided herein are organic solvent-based processes for the removal of rubber from non-Hevea plants such as guayule shrubs. By the use of the processes, solid purified rubber can be obtained that contains 0.05-0.5 weight % dirt, 0.2-1.5 weight % ash, and 0.1-4 weight % resin (when it has been dried so as to contain 0.8 weight % volatile matter).

Provided herein are organic solvent-based processes for the removal of rubber from non-Hevea plants such as guayule shrubs. By the use of the processes, solid purified rubber can be obtained that contains 0.05-0.5 weight % dirt, 0.2-1.5 weight % ash, and 0.1-4 weight % resin (when it has been dried so as to contain 0.8 weight % volatile matter).

Provided herein are organic solvent-based processes for the removal of rubber from non-Hevea plants such as guayule shrubs. By the use of the processes, solid purified rubber can be obtained that contains 0.05-0.5 weight % dirt, 0.2-1.5 weight % ash, and 0.1-4 weight % resin (when it has been dried so as to contain 0.8 weight % volatile matter).

The invention relates to a method for producing thermoplastic moulding compounds (73), said method comprising: (a) feeding a dispersion (1), that contains a rubber, and a precipitation solution (3) into a precipitation tank (5), an aqueous suspension (9) that contains rubber particles being produced; (b) optionally sintering the rubber particles contained in the aqueous suspension (9) that contains rubber particles to form larger particles; (c) mechanically dewatering the aqueous suspension that contains rubber particles, rubber particles (33) that contain residual moisture and a liquid phase (35) that contains fine-particle rubber being obtained; (d) feeding the rubber particles (33) that contain residual moisture into an extruder (57), the extruder (57) comprising a drawing-in zone (55), a dewatering section (59), at least one feed section (65) for at least one further polymer (67) and/or additives, a mixing section (69), and a discharge zone (71), the liquid phase that contains residual rubber separated in the dewatering section (59) being collected in a buffer tank (63), the buffer tank (63) comprising at least one agitator (75); and returning the liquid phase (77) that contains residual rubber collected in the buffer tank (63) to the precipitation tank (5).

The invention relates to a method for producing thermoplastic moulding compounds (73), said method comprising: (a) feeding a dispersion (1), that contains a rubber, and a precipitation solution (3) into a precipitation tank (5), an aqueous suspension (9) that contains rubber particles being produced; (b) optionally sintering the rubber particles contained in the aqueous suspension (9) that contains rubber particles to form larger particles; (c) mechanically dewatering the aqueous suspension that contains rubber particles, rubber particles (33) that contain residual moisture and a liquid phase (35) that contains fine-particle rubber being obtained; (d) feeding the rubber particles (33) that contain residual moisture into an extruder (57), the extruder (57) comprising a drawing-in zone (55), a dewatering section (59), at least one feed section (65) for at least one further polymer (67) and/or additives, a mixing section (69), and a discharge zone (71), the liquid phase that contains residual rubber separated in the dewatering section (59) being collected in a buffer tank (63), the buffer tank (63) comprising at least one agitator (75); and returning the liquid phase (77) that contains residual rubber collected in the buffer tank (63) to the precipitation tank (5).