EP 1165015 A1 20020102 - IMPROVED POLYVINYLSILOXANE IMPRESSION MATERIAL
Title (en)
IMPROVED POLYVINYLSILOXANE IMPRESSION MATERIAL
Title (de)
POLYVINYLSILOXAN-ABFORMMASSE
Title (fr)
MATERIAU DE PRISE D'EMPREINTE AMELIORE A BASE DE POLYVYNILSILOXANE
Publication
Application
Priority
- US 0006040 W 20000308
- US 28811399 A 19990408
Abstract (en)
[origin: WO0061075A1] Improved two component polymerizable polyorganosiloxane compositions are described, particularly for use in making dental impressions, having improved tear strength and wettability. Improved tear strength results from inclusion of a quadri-functional polysiloxane having a vinyl content of 0.16 to 0.24 m-mole/g. Working time is maintained by including sufficient amounts of a retarder composition that delays onset of the vinyl polymerization. Wettability is improved by including a surfactant resulting in a surface contact angle with water at three minutes of less than 50 DEG . The surfactant chosen has an HLB of 8-11, such that the wetting contact angle is achieved within less than two minutes and remains wetting throughout the working time of the impression taking, substantially improving impression quality. A low viscosity impression material is provided and includes a base component and a catalyst component. Both components are siloxane-based materials.
IPC 1-7
IPC 8 full level
A61K 6/90 (2020.01); C08L 83/04 (2006.01)
CPC (source: EP)
A61K 6/90 (2020.01); C08L 83/04 (2013.01); C08G 77/12 (2013.01); C08G 77/20 (2013.01); C08G 77/70 (2013.01); C08G 77/80 (2013.01)
Citation (search report)
See references of WO 0061075A1
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
WO 0061075 A1 20001019; CA 2369903 A1 20001019; CA 2369903 C 20110517; EP 1165015 A1 20020102; JP 2002541167 A 20021203; MX PA01010162 A 20020730
DOCDB simple family (application)
US 0006040 W 20000308; CA 2369903 A 20000308; EP 00913808 A 20000308; JP 2000610408 A 20000308; MX PA01010162 A 20000308