US3928697A
Expired / Lapsed
US
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Coated films
Assignee: Imperial Chemical Industries Ltd
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Filing: 1974-11-25
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Granted: 1975-12-23
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Expires: 1994-11-25
Abstract
Abstract Matt coated drafting films are treated with polymeric copolymer anti-static materials such as a copolymer of trimethyl- Beta methacryloyl-oxyethyl ammonium chloride with styrene.
Inventors
- 👤 William John Mallinson
- 👤 Roy Frederick Huffey
- 👤 Geoffrey Pickles Irvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:24
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/043; C08J7/044; C08J7/046; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; C08J2427/00; C08J2427/02; C08J2427/04; C08J2427/08; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24372; Y10T428/24413; Y10T428/24421; Y10T428/27; Y10T428/273; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
AN ANTI-STATIC MATT COATED PLASTIC FILM WHICH COMPRISES A SELF-SUPPORTING SYNTHETIC PLASTIC FILM BASE HAVING SUPERIMPOSED ON AT LEAST ONE SURFACE OF THE FILM BASE AN ADHERENT MATT LAYER COMPRISING A FINELY DIVIDED PARTICULATE MATERIAL AND A RESINUS BINDER, WHEREIN THE COATED FILM HAS AT LEAST ONE COATING LAYER COMPRISING AN ANTI-STATIC MATERIAL, SAID ANTISTATIC MATERIAL COMPRISING AN ANTI-STATIC MATERIAL, SAID ANTI REPEATING UNITS OF THE FORMULA:
Claim 2
Dependent Claim
67 words
AN ANTI-STATIC MATT COATED PLASTIC FILM WHICH COMPRISES A SELF-SUPPORTING SYNTHETIC PLASTIC FILM BASE HAVING SUPERIMPOSED ON AT LEAST ONE SURFACE OF THE FILM BASE AN ADHERENT MATT LAYER COMPRISING A FINELY DIVIDED PARTICULATE MATERIAL AND A RESINUS BINDER, WHEREIN THE COATED FILM HAS AT LEAST ONE COATING LAYER COMPRISING AN ANTI-STATIC MATERIAL, SAID ANTISTATIC MATERIAL COMPRISING AN ANTI-STATIC MATERIAL, SAID ANTI REPEATING UNITS OF THE FORMULA:
Claim 3
Dependent Claim
16 words
An anti-static film according to claim 1, in which the anti-static copolymer comprises a homopolymer of:
Claim 4
Dependent Claim
20 words
An anti-static film according to claim 1, in which the synthetic plastics film base is a film of polyethylene terephthalate.
Claim 5
Dependent Claim
45 words
AN ANTI-STATIC FILM ACCORDING TO CLAIM 1, IN WHICH AN INTERMEDIATE ADHESION-PROMOTING LAYER IS DISPOSED BETWEEN THE PLASTICS FILM BASE AND THE MATT LAYER, THE ANTI-STATIC MATERIAL BEING INCLUDED IN THE INTERMEDIATE ADHESION-PROMOTING LAYER IN AN AMOUNT IN THE RANGE FROM 0.2 TO 2.0 MG/DM2.
Claim 6
Dependent Claim
68 words
An anti-static film according to claim 4, in which the intermediate adhesion-promoting layer comprises: a. a mixed terephthalic acid-isophthalic acid copolyester with one or more alkylene glycols in which 25 to 90% of the ester groups are derived from isophthalic acid; b. a copolymer of a vinyl halogenoacetate; c. a terpolymer of vinyl chloride, vinyl acetate and vinyl alcohol; or d. a copolymer of vinylidene chloride and acrylonitrile.
Claim 7
Dependent Claim
43 words
an anti-static film according to claim 1, in which the resinous binder of the matt layer comprises: a. cellulose acetate propionate; b. a copolymer of vinyl formal and vinyl alcohol; c. a copolymer of vinyl butyral and vinyl alcohol; or d. cellulose nitrate.
Claim 8
Dependent Claim
25 words
An anti-static film according to claim 1, in which the anti-static material is included in the matt layer in amounts from 0.6 to 7.0 mg/dm2.
Claim 9
Dependent Claim
20 words
An anti-static film according to claim 1, in which the matt layer has superimposed upon it an ink receptive layer.
Claim 10
Dependent Claim
31 words
An anti-static film according to claim 1, in which an ink receptive layer is superimposed upon the matt layer and contains an anti-static material in amounts from 0.2 to 2.0 mg/dm2.
Claim 11
Dependent Claim
26 words
An anti-static film according to claim 8, in which the ink receptive layer comprises: a. a copolymer of vinyl butyral and vinyl alcohol; or b. gelatin.
Claim 12
Dependent Claim
31 words
An anti-static film according to claim 1, in which the anti-static material is a copolymer containing from 15 to 80% by weight of repeating units having the formula specified in claim
Claim 13
Dependent Claim
27 words
An anti-static film according to claim 11, in which the anti-static material is a copolymer formed with comonomers comprising styrene, vinyl toluene, 2-ethylhexyl acrylate or methyl methacrylate.
Claim 14
Dependent Claim
25 words
An anti-static film according to claim 1, in which the anti-static material is a copolymer of equimolar amounts of trimethyl-Beta -methacryloyloxyethyl ammonium chloride and styrene.
Claim 15
Dependent Claim
19 words
An anti-static film according to claim 1, in which the anti-static material is included in the outermost coating layer.
References Cited (Backward Citations)
US3515626A
Cited
US3468702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |