[go: up one dir, main page]

GB1375670A - - Google Patents

Info

Publication number
GB1375670A
GB1375670A GB212474A GB212474A GB1375670A GB 1375670 A GB1375670 A GB 1375670A GB 212474 A GB212474 A GB 212474A GB 212474 A GB212474 A GB 212474A GB 1375670 A GB1375670 A GB 1375670A
Authority
GB
United Kingdom
Prior art keywords
polymer
layer
discrete particles
polyethylene
june
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB212474A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1375670A publication Critical patent/GB1375670A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73931—Two or more layers, at least one layer being polyester

Landscapes

  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
  • Laminated Bodies (AREA)

Abstract

1375670 Coated products MINNESOTA MINING & MFG CO 20 June 1972 [21 June 1971 17 Jan 1972] 02124/74 Divided out of 1375669 Addition to 1375669 Heading B2E [Also in Division C3] A biaxially oriented foil having a coated face comprises a substantially particle free first layer consisting of polyethylene terephthalate and a second layer consisting of a major phase of polyethylene terepthalate and a plurality of minor discontinuous phases of discrete particles, at least two of the discontinuous phases being essentially of mutually insoluble polymers, (a) at least 1% discrete particles of at least one polymer being selected from the class consisting of polypropylene, styreneacrylonitrile polymer, nylon and incompatible polyester and (b) at least 1% discrete particles of at least one polymer selected from the class consisting of polymers of mono α-olefines containing no more than 4 carbon atoms, any polymer so selected being structurally different from any polymer so selected under (a), the coating being adjacent the first layer. Examples described the preparation of fine 2-layer foil structures incorporating inter alia nylon, polycarbonate, polyethylene and polypropylene. Acicular γ-Fe 2 O 3 are subsequently coated onto the face of such foil structures.
GB212474A 1971-06-21 1972-06-20 Expired GB1375670A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15535371A 1971-06-21 1971-06-21

Publications (1)

Publication Number Publication Date
GB1375670A true GB1375670A (en) 1974-11-27

Family

ID=22555101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB212474A Expired GB1375670A (en) 1971-06-21 1972-06-20

Country Status (3)

Country Link
BR (1) BR7204004D0 (en)
GB (1) GB1375670A (en)
SU (1) SU568401A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118193A (en) * 1982-03-26 1983-10-26 Anic Spa Polycarbonate-based thermoplastic polymer blends

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118193A (en) * 1982-03-26 1983-10-26 Anic Spa Polycarbonate-based thermoplastic polymer blends

Also Published As

Publication number Publication date
BR7204004D0 (en) 1973-06-14
SU568401A3 (en) 1977-08-05

Similar Documents

Publication Publication Date Title
GB1375669A (en)
DE3572682D1 (en) Polymeric films
GB1465973A (en) Biaxially oriented polyethylene terephthalate film
IE782394L (en) Peelable bonded structure
GB1465496A (en) Coated films
ES475464A1 (en) Peelable bonded structures and process for preparing same
GB1263991A (en) Magnetic recording document having validating means
CA973291A (en) Abrasion resistant coating composition of an acrylic polymer, a polyester and a thermosetting constituent
GB1537260A (en) Polyester films
GB1380024A (en) Corrugated polymeric film
GB1359891A (en) Preparation of filled thermoplastic films
GB1375670A (en)
US4237506A (en) Polymodal magnetic recording member
GB1348247A (en) Coated fabrics of thermoplastics materials
GB1522882A (en) Polyester films
GB1420990A (en) Holographic records
GB1330938A (en) Coated chromium dioxide particles
GB1504293A (en) Method of forming magnetic media
GB1110668A (en) Polyolefin-metal laminates
ES8401513A1 (en) Adhesive tape.
GB1434521A (en) Carriers for magnetic recording tapes
GB1265754A (en)
GB1519597A (en) Carton stock with composite polyethylene coating
BE791514A (en) DI- AND TRIESTERS ALPHA, BETA-INSATURES CONTAINING THE PERFLUOROALKYL GROUP AND POLYMERS OBTAINED FROM THESE COMPOUNDS
GB1253126A (en)

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee