EP0247648B1
Expired / Lapsed
EP
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A sheet or web carrying an antistatic layer
Assignee: Agfa Gevaert NV
•
Filing: 1987-04-14
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Granted: 1989-08-23
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Expires: 2007-04-14
Abstract
No abstract record available.
Inventors
- 👤 Daniel Maurice Timmerman
- 👤 August Marcel Marien
- 👤 Jan Emiel Van Havenbergh
- 👤 Etienne Adrianus Van Thillo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 08:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; G03C1/895; C; C09; C09K; C09K3/00; C09K3/16; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
72 words
A sheet or web comprising a substrate which is composed of or coated with a hydrophobic resin and carries an antistatic layer, characterised in that the antistatic layer consists essentially of a blockcopolyetherester of dibasic carboxylic acid(s) esterified with ethylene glycol and with a polyoxyethylene glycol having an average molecular weight in the range 1,000 to 10,000, at least 20 % by weight of such blockcopolyetherester being constituted by polyoxyethylene-ester chain parts.
Claim 2
Dependent Claim
72 words
A sheet or web comprising a substrate which is composed of or coated with a hydrophobic resin and carries an antistatic layer, characterised in that the antistatic layer consists essentially of a blockcopolyetherester of dibasic carboxylic acid(s) esterified with ethylene glycol and with a polyoxyethylene glycol having an average molecular weight in the range 1,000 to 10,000, at least 20 % by weight of such blockcopolyetherester being constituted by polyoxyethylene-ester chain parts.
Claim 3
Dependent Claim
24 words
A sheet or web according to claim 1, wherein said polyoxyethylene-ester chain parts constitute at least 75 % by weight of the block copolymer.
Claim 4
Dependent Claim
25 words
A sheet or web according to claim 1 or 2, wherein said blockcopolyetherester has been derived from terephthalic acid, isophthalic acid or a mixture thereof.
Claim 5
Dependent Claim
25 words
A sheet or web according to any of claims 1 to 3, wherein said blockcopolyetherester contains a minor amount of sulpho groups in salt form.
Claim 6
Dependent Claim
42 words
A sheet or web according to claim 4, wherein from 5 to 10 mole % of the dibasic carboxylic acid or derivative thereof used in the preparation of the polyester part of the blockcopolyetherester is substituted by sulpho groups in salt form.
Claim 7
Dependent Claim
34 words
A sheet or web according to any preceding claim, wherein said sheet or web includes at least one said antistatic layer comprising at least one said blockcopolyetherester in particulate form, dispersed in a binder.
Claim 8
Dependent Claim
28 words
A sheet or web according to any preceding claim, wherein said sheet or web includes at least one said antistatic layer formed by at least one said blockcopolyetherester.
Claim 9
Dependent Claim
34 words
A sheet or web according to any preceding claim, wherein said sheet or web comprises a hydrophobic resin or resin-coated support bearing at least one said antistatic layer and at least one recording layer.
Claim 10
Dependent Claim
22 words
A sheet or web according to claim 8, wherein there is at least one said recording layer comprising a silver halide emulsion.
Claim 11
Dependent Claim
47 words
A sheet or web according to claim 8 or 9, wherein a said antistatic layer is present as a subbing layer beneath a silver halide emulsion layer or a receiving layer for receiving a transfer image in a silver complex diffusion transfer or dye diffusion transfer process.
Claim 12
Dependent Claim
25 words
A sheet or web according to any preceding claim, wherein there is a said antistatic layer on each side of the resin or resin-coated substrate.
Claim 13
Dependent Claim
55 words
A sheet or web according to any of claims 8 to 11, wherein on one side of said substrate there is at least one recording layer and at the opposite side of said substrate there is a said antistatic layer comprising at least one said blockcopolyetherester and a pigment which gives such layer anti-reflecting properties.
Claim 14
Dependent Claim
19 words
A sheet or web according to claim 10, wherein the subbing layer is applied onto a polyethylene terephthalate support.
References Cited (Backward Citations)
No citation records indexed.
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