SULFUR-CROSSLINKABLE RUBBERIZING MIXTURE

摘要

A sulfur-crosslinkable rubberizing mixture for strengthening elements in motor vehicle pneumatic tires comprises 70 to 100 phr (parts by weight, based on 100 parts by weight of total rubbers in the mixture) of natural rubber, up to 30 phr of at least one polybutadiene, up to 15 phr of at least one carbon black, 20 to 100 phr of at least one high-dispersibility silica, at least one silane coupling agent and a bonding system. The invention further relates to motor vehicle pneumatic tires comprising the sulfur-crosslinked rubberizing mixture. For improved resistance to cracking and growth of cracks with good adhesion and good mechanical and dynamic properties, the high-dispersibility silica has a CTAB number to ASTM D 3765 of more than 130 m2/g.

主权项

1. A sulfur-crosslinkable rubberizing mixture for reinforcement in pneumatic tires, comprising:
from 70 to 100 phr (parts by weight, based on 100 parts by weight of all of the rubbers in the mixture) of natural rubber; from 0 to 30 phr of at least one polybutadiene; from 0 to 15 phr of at least one carbon black; from 20 to 100 phr of at least one high-dispersibility silica; at least one silane coupling agent; and, an adhesive system,wherein the CTAB index of the high-dispersibility silica in accordance with ASTM D3765 is more than 130 m2/g.