Reduction in benzothiazole emissions when heating benzothiazole-containing rubber
AssigneeLANXESS Deutschland GmbH
InventorsRalf-Johann Moritz, Thomas Klein
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Abstract
Reducing benzothiazole emission during heating of rubber containing benzothiazole The invention relates to a process for reducing benzothiazole emission during heating of rubber containing benzothiazole and/or substances evolving benzothiazole during heating, wherein the heating is carried out in the presence of polyphosphoric acid (PPA).
Claims14
A process for reducing benzothiazole emission during heating of rubber containing benzothiazole and/or substances evolving benzothiazole during heating, comprising the step of heating the rubber in the presence of polyphosphoric acid (PPA).
A process for producing asphalt with reduced benzothiazole emissions comprising the mixing and heating of:
- a) rubber containing benzothiazole and/or substances evolving benzothiazole during heating;
- b) bitumen;
- and
- c) polyphosphoric acid (PPA).
-15. (canceled)
Asphalt containing:
- a) rubber containing benzothiazole and/or substances evolving benzothiazole during heating;
- b) bitumen;
- and
- c) polyphosphoric acid (PPA).
Dependencies are inferred from the claim text.