(19)

(11)

EP 1 144 331 A1

(12)

(43) Date of publication: 17.10.2001 Bulletin 2001/42 (21) Application number: 99967667.9 (22) Date of filing: 23.12.1999

(51) International Patent Classification (IPC)7: C04B 24/42, C04B 7/14 // C04B103:52 (86) International application number: PCT/US9931/012 (87) International publication number: WO 0039/046 (06.07.2000 Gazette 2000/27)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 29.12.1998 BR 9805843 (71) Applicant: DOW CORNING CORPORATION Auburn, MI 48611 (US)	(72) Inventor: LOPES DA CUNHA, Sebastiao, Walter, Jr. CEP Campinas, SP (BR) (74) Representative: Kyle, Diana  Elkington and FifeProspect House8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)