COPOLYCARBONATES, THEIR DERIVATIVES AND THE USE THEREOF IN SILICONE HARDCOAT COMPOSITIONS

Disclosed herein are novel copolycarbonates containing repeating units A and B respectively of the formulae: (A) -[R1OC(=O)O]-, and (B) -[(R2O)n-C(=O)-O]-, wherein the molar ratio of units (A) to units (B) is in the range of from about 9:1 to about 1:9, and wherein R1 is a divalent C8 to C12 alicycl...

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Bibliographische Detailangaben
Hauptverfasser:	DHANABALAN, ANANTHARAMAN, IYER, NARAYANA, PADMANABHA, LANDON, SHAYNE, JOSEPH, HILGERS, CHRISTOPH
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Disclosed herein are novel copolycarbonates containing repeating units A and B respectively of the formulae: (A) -[R1OC(=O)O]-, and (B) -[(R2O)n-C(=O)-O]-, wherein the molar ratio of units (A) to units (B) is in the range of from about 9:1 to about 1:9, and wherein R1 is a divalent C8 to C12 alicyclic group, and R2 is ethylene or propylene, and n is an integer ranging from 4 to 40. Also disclosed are silicone hardcoat compositions containing the copolycarbonates and their derivatives. Upon cure, these silicone hardcoat compositions exhibit improved flexibility as compared to that of the conventional hardcoats while at the same time maintain the abrasion resistance of conventional silicone hardcoats.