(19)

(11)

EP 0 461 149 A1

(12)

(43) Date of publication: 18.12.1991 Bulletin 1991/51 (21) Application number: 90903888.0 (22) Date of filing: 26.02.1990

(51) International Patent Classification (IPC):  C08K 3/ 34( . ) F16L 55/ 165( . ) (86) International application number: PCT/GB1990/000295 (87) International publication number: WO 1990/010032 (07.09.1990 Gazette 1990/21)

(84) Designated Contracting States: BE DE ES FR GB IT (30) Priority: 28.02.1989 GB 19890004475 (71) Applicant: PIPE & SEWER RENOVATIONS LIMITED Coventry CV3 6EH (GB)	(72) Inventors: HINDMARCH, Ronald, Sangster Walden Shrewsbury Shropshire (GB) HUTTON, Frank, Arthur Coventry CV3 6EH (GB) JONES, David, Bryn Eaton Lodge Warwickshire CV8 2FU (GB) (74) Representative: Jones, David Bryn  Eaton Lodge Coventry Road Kenilworth CV8 2FU Kenilworth CV8 2FU (GB)