Covering, a process of producing it and the use thereof
AssigneeGebr. von der Wettern GmbH
InventorsWalter von der Wettern, Harald Albrecht
Life of this patent
Estimating the term…
Abstract
A covering especially for roads consisting of mineral fillers, reclaimed rubber and a binder based on bitumen, it being possible to incorporate 5 to 30% by weight of reclaimed rubber and the binder comprising a hot-homogenized blend of bitumen and thermoplastic polymers, especially of the radial teleblock copolymer type being used. The resultant coverings are capable of reducing the annoyance caused by rolling noises etc. without the necessity of putting up with losses of other qualities.
Claims12
A road covering comprising a mixture of mineral fillers, 5 to 30% by weight of small particles of reclaimed rubber and a binder comprising a ratio of 95-75 parts by weight of bitumen homogenized hot with 5-25 parts by weight of a thermoplastic polymer.
A process comprising homogenizing a ratio of 95-75 parts by weight of bitumen with 5-25 parts by weight of a thermoplastic polymer at a temperature of 180.degree. to 220.degree. C. in about 0.3 to 2 hours in a high speed mixer to produce a hot binder;
- and
- mixing the hot binder with small particles of reclaimed rubber and a mineral filler to produce a road covering.
Dependencies are inferred from the claim text.