公开(公告)号：DE1759467A1

公开(公告)日：1971-06-24

申请号：DE1759467

申请日：1968-05-04

Applicant: BASF AG

Inventor： TRIESCHMANN HANS-GEORG PROF DR ,  UNTERSTENHOEFER LEO DIPL-ING D ,  MAIER SIEGFRIED DIPL-ING DR ,  BERBNER HEINZ

IPC: E01C13/04 ,  E01C5/00

公开(公告)号：DE1703373A1

公开(公告)日：1971-12-30

申请号：DE1703373

申请日：1968-05-10

Applicant: BASF AG

Inventor： TRIESCHMANN HANS-GEORG PROF DR ,  UNTERSTENHOEFER LEO DIPL-ING D ,  MAIER SIEGFRIED DIPL-ING DR ,  BERBNER HEINZ

IPC: E01C13/04 ,  E04F15/22 ,  B32B3/12

公开(公告)号：DE1759787A1

公开(公告)日：1971-07-01

申请号：DE1759787

申请日：1968-06-07

Applicant: BASF AG

Inventor： TRIESCHMANN HANS-GEORG PROF DR ,  UNTERSTENHOEFER LEO DIPL-ING D ,  MAIER SIEGFRIED DIPL-ING DR ,  BERBNER HEINZ

IPC: E01C13/04 ,  E04F15/22 ,  E01C13/00

Abstract: 1,262,323. Surfaces for sports ground. BADISCHE ANILIN-& SODA-FABRIK A.G. 6 June, 1969 [7 June, 1968], No. 28656/69. Addition to 1,261,624. Heading A6D. [Also in Division B5] A covering for playing fields consists of two layers, each of thickness 3-10 mm. and having on one side only parallel ribs, of height 1-5mm. and cross-sectional area 2-25 mm 2 , and spaced at 5-20mm., arranged with ribbed faces in contact with the ribs of one layer at 45‹-90‹ to the ribs of the other; each layer comprises a mixture of 100 parts by wt. bitumen, 50-120 parts by ethylene polymer and optionally up to 100 parts by wt. filler, which mixture has a mean elongation of 400-800% and a modulus of elasticity of 60-100 kg./cm 2 . The ribs may be of semicircular, square, hemielliptical part-circular, part-elliptical, rectangular or swallowtailed section. Each layer may have a different composition and thickness, e.g. the upper layer may contain a filler while the lower layer contains no filler. The ethylene polymer may be copoly (ethylene/n-butyl acrylate). The layers may be moulded at 200-280‹C or extruded at 100-160‹C and bonded by adhesive or by fusion.