EP 0986362 A2 20000322 - IMPROVED POLYVINYLSILOXANE IMPRESSION MATERIAL
Title (en)
IMPROVED POLYVINYLSILOXANE IMPRESSION MATERIAL
Title (de)
VERBESSERTES POLYVINYLSILOXAN-ABDRUCKMATERIAL
Title (fr)
MATERIAU A EMPREINTE AMELIORE AU POLYVINYLSILOXANE
Publication
Application
Priority
- US 9810942 W 19980529
- US 4790697 P 19970529
Abstract (en)
[origin: WO9853791A2] 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 improved and includes a base component and a catalyst component. Both components are siloxane-based materials.
IPC 1-7
IPC 8 full level
CPC (source: EP)
A61K 6/90 (2020.01)
Citation (search report)
See references of WO 9853791A2
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
WO 9853791 A2 19981203; WO 9853791 A3 19990415; EP 0986362 A2 20000322; JP 2002515907 A 20020528
DOCDB simple family (application)
US 9810942 W 19980529; EP 98924981 A 19980529; JP 50093599 A 19980529