GB831896A - Improvements in irradiated olefin polymers - Google Patents

Improvements in irradiated olefin polymers

Info

Publication number
GB831896A
GB831896A GB20470/57A GB2047057A GB831896A GB 831896 A GB831896 A GB 831896A GB 20470/57 A GB20470/57 A GB 20470/57A GB 2047057 A GB2047057 A GB 2047057A GB 831896 A GB831896 A GB 831896A
Authority
GB
United Kingdom
Prior art keywords
polymer
carbon atoms
per molecule
atoms per
irradiated
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
GB20470/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phillips Petroleum Co
Original Assignee
Phillips Petroleum Co
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 by Phillips Petroleum Co filed Critical Phillips Petroleum Co
Publication of GB831896A publication Critical patent/GB831896A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0844—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using X-ray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/085—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using gamma-ray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0041—Crystalline

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

A polymer of at least one 1-olefin having no more than four carbon atoms per molecule, a density of at least 0.94 at 25 DEG C. and a crystallinity of at least 75% at 25 DEG C. is subjected to a dosage of from 105 to 1011 roentgens of radiation, and the irradiated polymer thereafter heated to a temperature above its softening point. The polymer is preferably polyethylene or a copolymer of ethylene and a small amount of one or more other 1-olefins having no more than four carbon atoms per molecule. A filler such as carbon black, a clay, silica, kaolin, silicate, titanium dioxide, hydrated alumina, calcined magnesia, calcium carbonate, zinc sulphide or zinc oxide may be incorporated in the polymer before or after irradiation and heat treatment.ALSO:A polymer of at least one 1-olefin having no more than four carbon atoms per molecule, a density of at least 0.94 at 25 DEG C. and a crystallinity of at least 75% at 25 DEG C. is subjected to a p dosage of from 105 to 1011 roentgens of radiation, and the irradiated polymer thereafter heated to a temperature above its softening point. The polymer is preferably polyethylene or a copolymer of ethylene and a small amount of one or more other 1-olefins having no more than four carbon atoms per molecule. A filler such as carbon black, a clay, silica, kaolin, calcium silicate, titanium dioxide, hydrated alumina, calcined magnesia, calcium carbonate, zinc sulphide or zinc oxide, may be incorporated in the polymer before or after irradiation and heat treatment. The products may be used for the production of floor or wall tiles, dishes, trays, waste-baskets, gears, pipes and for coating wire.
GB20470/57A 1956-07-18 1957-06-28 Improvements in irradiated olefin polymers Expired GB831896A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US831896XA 1956-07-18 1956-07-18

Publications (1)

Publication Number Publication Date
GB831896A true GB831896A (en) 1960-04-06

Family

ID=22176750

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20470/57A Expired GB831896A (en) 1956-07-18 1957-06-28 Improvements in irradiated olefin polymers

Country Status (4)

Country Link
BE (1) BE559150A (en)
CA (1) CA605124A (en)
FR (1) FR1197670A (en)
GB (1) GB831896A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120266A (en) * 1982-05-14 1983-11-30 Halstead James Ltd Floorcoverings made from plastics materials
GB2121058A (en) * 1982-05-21 1983-12-14 Kollmorgen Tech Corp Relieving stress in polymer articles
WO2003089501A1 (en) * 2002-04-19 2003-10-30 Gammatron (Pty) Ltd Method of increasing the hydrostatic stress strength of a polymer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1142882A (en) * 1980-09-04 1983-03-15 George White Pipe manufactured from irradiated polyethylene containing carbon black

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120266A (en) * 1982-05-14 1983-11-30 Halstead James Ltd Floorcoverings made from plastics materials
GB2121058A (en) * 1982-05-21 1983-12-14 Kollmorgen Tech Corp Relieving stress in polymer articles
WO2003089501A1 (en) * 2002-04-19 2003-10-30 Gammatron (Pty) Ltd Method of increasing the hydrostatic stress strength of a polymer

Also Published As

Publication number Publication date
CA605124A (en) 1960-09-13
BE559150A (en)
FR1197670A (en) 1959-12-02

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