Patent ID: 7005161
Filing Date: 2006-02-28
Classification: C23C

Abstract:
1. A process for forming a solid thin-film layer of oligomeric material in a vapor deposition unit operating at a predetermined pressure, a predetermined evaporator temperature, and a predetermined condenser temperature, the process comprising the following steps: (a) polymerizing a monomer to obtain a solid oligomer thereof having a vaporization temperature at said predetermined pressure that does not exceed said predetermined evaporator temperature, and having a decomposition temperature at said predetermined pressure that exceeds said predetermined evaporator temperature; (b) flash evaporating the solid oligomer in said vapor deposition unit to produce a vapor at said predetermined pressure and evaporator temperature; and (c) cryocondensing the vapor to produce a solid oligomer in thin-film form in the absence of irradiation during the flash evaporating and cryocondensing steps; wherein said monomer is a bicycloaliphatic component used to prepare a heat-sealable coating and said oligomer has a molecular weigh not to exceed about 1200.