EP 2648875 A1 20131016 - METHODS AND COMPOSITIONS FOR LENS BLOCKING
Title (en)
METHODS AND COMPOSITIONS FOR LENS BLOCKING
Title (de)
VERFAHREN UND ZUSAMMENSETZUNGEN ZUR LINSENBLOCKIERUNG
Title (fr)
PROCÉDÉS ET COMPOSITIONS DE BLOCAGE DE LENTILLE
Publication
Application
Priority
- GB 201020965 A 20101210
- US 2011064123 W 20111209
Abstract (en)
[origin: WO2012078969A1] Disclosed is a lens blocking composition and lens blocks as well as methods of blocking and processing a lens. In particular, a thermoplastic lens blocking composition for blocking an optical substrate in a processing position is disclosed that comprises a blend of a homopolymer or copolymer of epsilon-caprolactone having a number average molecular weight greater than 4,000 and a resin based on a bisphenol or a bisphenol-derivative. The composition is solid at 25 degrees Celcius and 1 atm.
IPC 8 full level
B24B 13/005 (2006.01); B29D 11/00 (2006.01); C08L 63/00 (2006.01); C08L 67/04 (2006.01); C08L 69/00 (2006.01)
CPC (source: EP)
B24B 13/005 (2013.01); B29D 11/00942 (2013.01); C08L 63/00 (2013.01); C08L 67/04 (2013.01); C08L 2205/02 (2013.01)
C-Set (source: EP)
Citation (search report)
See references of WO 2012078969A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012078969 A1 20120614; EP 2648875 A1 20131016; GB 201020965 D0 20110126; JP 2014501629 A 20140123; JP 5902710 B2 20160413
DOCDB simple family (application)
US 2011064123 W 20111209; EP 11806041 A 20111209; GB 201020965 A 20101210; JP 2013543372 A 20111209