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Resin Surface Coatings for Polyester Film

IP.com Disclosure Number: IPCOM000095973D
Original Publication Date: 1964-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Moore, DE: AUTHOR [+2]

Abstract

Difficulty is encountered in electroplating and electroless plating polyester materials, such as polyethylene terephthalate, due to their hydrophobic character.

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Resin Surface Coatings for Polyester Film

Difficulty is encountered in electroplating and electroless plating polyester materials, such as polyethylene terephthalate, due to their hydrophobic character.

This shortcoming is overcome by coating the surface with materials containing specific functional groups. These materials include resins selected from the following: nitro group containing resins, such as nitrocellulose; carboxyl group containing resins, as in polyesters such as polyvinyl ether maleic anhydride; sulfonic acid group substituted resins; ester group containing resins, as in polyvinyl ether maleic acid ester resins; nitrile group containing resins, as in acrylic resins such as acrylonitrile; acyl group containing resins, as in carbonyl containing resins; and halogen containing resins, as in vinyl chloride resins.

These enumerated resins and many others of a similar nature can be used to impart a surface adsorptive nature to an otherwise hydrophobic substance. Such resins are capable of being both electron accepting and electron rejecting due to resonance and are thus capable of forming bonds with either a positively or negatively charged ion group. In the standard sensitization of material for plating with aqueous tin chloride (SnCl(2)) the solution can contain both positively charged tin (II) ion and negatively charged complex (SnCl(4)). Since the sensitizing stannous ion in the pretreatment bath can be in either a positively charged or negatively ch...