(19)

(11)

EP 0 067 183 A1

(12)

(43) Date of publication: 22.12.1982 Bulletin 1982/51 (21) Application number: 82900082.0 (22) Date of filing: 22.12.1981

(51) International Patent Classification (IPC):  C04B 24/ 26( . ) (86) International application number: PCT/AU1981/000192 (87) International publication number: WO 1982/002195 (08.07.1982 Gazette 1982/17)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 22.12.1980 AU 19800007033 (71) Applicant: GRACE, Reginald Frank North Rocks, N.S.W. 2151 (AU)	(72) Inventor: GRACE, Reginald Frank North Rocks, N.S.W. 2151 (AU)