Anionic and Lewis base photopolymerization process and its...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...

Reexamination Certificate

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C522S057000, C522S062000, C522S065000, C522S066000, C522S174000, C522S180000, C522S173000, C522S182000

Reexamination Certificate

active

06911485

ABSTRACT:
The invention relates to a process for polymerising a monomer, polymerizing and/or crosslinking a oligomer, or crosslinking a polymer or copolymer, said monomer, oligomer, polymer and copolymer being selected among precursor monomers, urethane, thiourethane and episulfide oligomers, and urethane, thiourethane and episulfide polymers and copolymers, which comprises:(a) adding to precursor monomers or oligomers or polymers or copolymers an effective amount of at least one complex of Co, Mo or W which under irradiation conditions photochemically reacts to release at least one anionically charged nucleophile or uncharged Lewis base; and(b) irridiating the mixture of (a) to release the at least one anionically charged nucleophile or uncharged Lewis base to initiate polymerisation and/or crosslinking of the monomer, oligomer, polymer or copolymer.

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