Process for producing thin polymer film by pulsed laser evaporation
AssigneeE. I. Du Pont de Nemours and Company
InventorGraciela B. Blanchet-Fincher
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Abstract
This invention provides an improved process for producing a thin film of addition polymer on a substrate by laser ablation wherein the molecular weight of addition polymer is controlled by conducting the process in the presence of at least one additive selected from chain transfer agents or polymer initiators.
Claims12
In a process for producing a thin film of an addition polymer on a substrate by bombarding a target polymer with radiation from a pulsed laser in a vacuum or gas atmosphere to form a plume of the components of the target polymer which undergo a repolymerization reaction and are deposited on the substrate as a film, wherein the improvement comprises modifying the molecular weight of the addition polymer of the deposited film by conducting the deposition in the presence of at least one additive comprising a chain transfer agent or polymer initiator.
Dependencies are inferred from the claim text.