GB908224A - A process for increasing the transparency of polyethylene - Google Patents

A process for increasing the transparency of polyethylene

Info

Publication number
GB908224A
GB908224A GB2138759A GB2138759A GB908224A GB 908224 A GB908224 A GB 908224A GB 2138759 A GB2138759 A GB 2138759A GB 2138759 A GB2138759 A GB 2138759A GB 908224 A GB908224 A GB 908224A
Authority
GB
United Kingdom
Prior art keywords
polyethylene
allyl
free
phosphate
tris
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
GB2138759A
Inventor
Trevor Thomas Greenwood
Solomon Harris Pinner
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.)
BX Plastics Ltd
Original Assignee
BX Plastics Ltd
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 BX Plastics Ltd filed Critical BX Plastics Ltd
Priority to GB2138759A priority Critical patent/GB908224A/en
Publication of GB908224A publication Critical patent/GB908224A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/01—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
    • C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
    • 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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/14—Peroxides
    • 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
    • C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
    • C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins

Abstract

The transparency of polyethylene is increased by admixing it with a polymerizable compound containing at least two non-conjugated ethylenic double bonds, and then polymerizing the compound in the presence of a free-radical initiator at a temperature above the crystalline melting point of the polyethylene, e.g. within the range of 100 DEG to 170 DEG C. Free-radical initiators specified are dicumyl peroxide, ditert.-butyl peroxide and diphenyl ethanes of the formula <FORM:0908224/IV(a)/1> in which R1 to R4 each represent hydrogen or an alkyl group, at least two being alkyl groups, and in which the benzene residues A and B may contain substituents, e.g. symmetrical diphenyl tetramethyl ethane. Unsaturated compounds specified are diallyl succinate, adipate, sebacate, phthalate, fumarate, maleate, oxyethylene carbonate and thiophosphonate, triallyl aconitate, borate, citrate, cyanurate, pyromellitate, phosphate aluminate and titanate, pyrogallol tris-(allyl carbonate), tetraalyl benzene tetracarboxylate, tris-(allyl phenyl) phosphate, allyl cinnamate and allyl alkacrylates. Also included in the monomer-polymer mixtures may be chlorinated paraffins, epoxide resins, butyl rubber, chlorinated polyethylene carbon black and antimony oxide. The polyethylene, which may be of the high, intermediate or low density variety, is initially in powder or granular form, but after mixing with the unsaturated monomer is formed into a sheet for curing.
GB2138759A 1959-06-22 1959-06-22 A process for increasing the transparency of polyethylene Expired GB908224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2138759A GB908224A (en) 1959-06-22 1959-06-22 A process for increasing the transparency of polyethylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2138759A GB908224A (en) 1959-06-22 1959-06-22 A process for increasing the transparency of polyethylene

Publications (1)

Publication Number Publication Date
GB908224A true GB908224A (en) 1962-10-17

Family

ID=10162062

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2138759A Expired GB908224A (en) 1959-06-22 1959-06-22 A process for increasing the transparency of polyethylene

Country Status (1)

Country Link
GB (1) GB908224A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3413244A (en) * 1964-04-29 1968-11-26 Pneumatiques Caoutchouc Mfg Polyolefine cellular products
FR2325681A1 (en) * 1975-09-29 1977-04-22 Fusion Rubbermaid Bv IMPROVEMENTS TO PROCESSES FOR THE PRODUCTION OF OBJECTS OF PLASTIC MATERIAL BY POWDER MOLDING
FR2328010A1 (en) * 1975-10-13 1977-05-13 Peroxid Chemie Gmbh PROCESS FOR CROSS-LINKING POLYOLEFINS
EP0404004A2 (en) * 1989-06-19 1990-12-27 Nippon Unicar Company Limited A shape memory elastic body

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3413244A (en) * 1964-04-29 1968-11-26 Pneumatiques Caoutchouc Mfg Polyolefine cellular products
DE1291508B (en) * 1964-04-29 1969-03-27 Pneumatiques Caoutchouc Mfg Process for the production of cell bodies from polyolefins
FR2325681A1 (en) * 1975-09-29 1977-04-22 Fusion Rubbermaid Bv IMPROVEMENTS TO PROCESSES FOR THE PRODUCTION OF OBJECTS OF PLASTIC MATERIAL BY POWDER MOLDING
FR2328010A1 (en) * 1975-10-13 1977-05-13 Peroxid Chemie Gmbh PROCESS FOR CROSS-LINKING POLYOLEFINS
EP0404004A2 (en) * 1989-06-19 1990-12-27 Nippon Unicar Company Limited A shape memory elastic body
EP0404004A3 (en) * 1989-06-19 1991-10-16 Nippon Unicar Company Limited A shape memory elastic body

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