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GB1303156A - - Google Patents

Info

Publication number
GB1303156A
GB1303156A GB1588970A GB1588970A GB1303156A GB 1303156 A GB1303156 A GB 1303156A GB 1588970 A GB1588970 A GB 1588970A GB 1588970 A GB1588970 A GB 1588970A GB 1303156 A GB1303156 A GB 1303156A
Authority
GB
United Kingdom
Prior art keywords
polypropylene
weight
film
sheeting
soluble
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
GB1588970A
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 GB1303156A publication Critical patent/GB1303156A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

1303156 Producing unstretched film or sheeting of polypropylene BADISCHE ANILIN & SODA FABRIK AG 3 April 1970 [5 April 1969] 15889/70 Addition to 1303151 Heading B5B Unstretched film or sheeting is produced by extruding polypropylene at a melt temperature of 180 to 360‹ C. to form a film or sheeting 0À005 to 2 mm. thick and bringing the extruded film or sheeting to ambient temperature the polypropylene used being a blend of 70 to 80% by weight of a polypropylene of which less than 1% by weight is soluble in boiling at standard pressure, the ratio by weight of polypropylene to toluene being 5:95, and 20 to 30% by weight of a polypropylene of which more than 99% by weight is soluble in toluene boiling at standard pressure, the ratio by weight of polypropylene to toluene being 5:95. The two polypropylenes have substantially the same intrinsic viscosity and molecular weight distributions (as determined by the method of gel permeation chromatography). The absolute values of their intrinsic viscosities [#] (measured in decahydronaphthalene at 130‹ C. are within the range from 1 to 10, preferably within the range of from 1À2 to 3À8. In the example, a mixture of 75% by weight of an insoluble polypropylene having an intrinsic viscosity of 2À7 and 25% by weight of a soluble polypropylene having an intrinsic viscosity of 2À6 are homogenized with each other in an extruder at 220‹ C. to produce a blend having a crystallite melting point of about 100‹ C. and the mixture is extruded at a melt temperature of 270‹ C. to form a film having a thickness of 0À1 mm. and a width of 600 mm. The extruded film is brought to room temperature and is not stretched after it has solidified.
GB1588970A 1969-04-05 1970-04-03 Expired GB1303156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691917651 DE1917651C3 (en) 1969-04-05 1969-04-05 Process for the production of unstretched films from polypropylene

Publications (1)

Publication Number Publication Date
GB1303156A true GB1303156A (en) 1973-01-17

Family

ID=5730487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1588970A Expired GB1303156A (en) 1969-04-05 1970-04-03

Country Status (6)

Country Link
AT (1) AT303398B (en)
BE (1) BE748460A (en)
DE (1) DE1917651C3 (en)
ES (1) ES378252A1 (en)
FR (1) FR2038273A1 (en)
GB (1) GB1303156A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237889A (en) * 1978-09-13 1980-12-09 Minnesota Mining And Manufacturing Company Diaper closure utilizing pressure-sensitive adhesive tape having textured foil backing
DE8708567U1 (en) * 1987-06-18 1987-08-27 Sedley Place Design GmbH Berlin, 1000 Berlin Notice board
EP0538749B1 (en) * 1991-10-21 1995-01-11 Mitsubishi Petrochemical Co., Ltd. Propylene copolymer composition

Also Published As

Publication number Publication date
FR2038273A1 (en) 1971-01-08
BE748460A (en) 1970-10-05
ES378252A1 (en) 1972-05-16
DE1917651C3 (en) 1975-04-24
DE1917651B2 (en) 1974-09-05
AT303398B (en) 1972-11-27
DE1917651A1 (en) 1970-10-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee