GB1310260A - Continuously producing waxy low molecular weight polyethylene from solid high molecular weight polyethylene - Google Patents

Continuously producing waxy low molecular weight polyethylene from solid high molecular weight polyethylene

Info

Publication number
GB1310260A
GB1310260A GB3817970A GB3817970A GB1310260A GB 1310260 A GB1310260 A GB 1310260A GB 3817970 A GB3817970 A GB 3817970A GB 3817970 A GB3817970 A GB 3817970A GB 1310260 A GB1310260 A GB 1310260A
Authority
GB
United Kingdom
Prior art keywords
polyethylene
molecular weight
weight polyethylene
low molecular
minutes
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
GB3817970A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1310260A publication Critical patent/GB1310260A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/50—Partial depolymerisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Fertilizers (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Paints Or Removers (AREA)

Abstract

1310260 Low molecular weight polyethylenes BADISCHE ANILIN- & SODA-FABRIK AG 7 Aug 1970 [9 Aug 1969] 38179/70 Heading C3P Low molecular weight waxy polyethylene is produced continuously by melting high molecular weight polyethylene by heating with vigorous stirring, extruding the melt into a heated tube, thermally degrading the polyethylene in the tube and cooling the polyethylene after degradation wherein (a) the starting polyethylene has a molecular weight of 80,000 to 200,000 by light scattering, (b) the solid polyethylene melts within 1 to 6 minutes, (c) the heat applied is such that the polyethylene has a temperature of 350‹ to 500‹ C. on extrusion, (d) the polyethylene is extruded into the heated tube against a pressure of 1 to 20 atmospheres gauge, (e) the polyethylene in the tube is thermally degraded at 350‹ to 500‹ C. for 10 to 120 minutes and (f) the waxy degraded polyethylene is cooled to below 250‹ C. in 3 to 5 minutes. The products may be used to coat granular materials and in the manufacture of pastes and dispersions.
GB3817970A 1969-08-09 1970-08-07 Continuously producing waxy low molecular weight polyethylene from solid high molecular weight polyethylene Expired GB1310260A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691940686 DE1940686C3 (en) 1969-08-09 1969-08-09 Process for the continuous production of waxy, low molecular weight polyethylene from solid, high molecular weight polyethylene

Publications (1)

Publication Number Publication Date
GB1310260A true GB1310260A (en) 1973-03-14

Family

ID=5742438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3817970A Expired GB1310260A (en) 1969-08-09 1970-08-07 Continuously producing waxy low molecular weight polyethylene from solid high molecular weight polyethylene

Country Status (4)

Country Link
BE (1) BE754562A (en)
DE (1) DE1940686C3 (en)
FR (1) FR2056681A5 (en)
GB (1) GB1310260A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136437A (en) * 1983-03-07 1984-09-19 Rinne K T I Kabushiki Kaisha Method and equipment for manufacturing paraffin wax-like substances
US5292862A (en) * 1990-04-10 1994-03-08 Mitsui Petrochemical Industries, Ltd. Method for the pyrolysis of polymers
US5631346A (en) * 1994-10-21 1997-05-20 Basf Aktiengesellschaft Thermomechanical degradation of polyolefins
EP2407528A1 (en) * 2010-07-15 2012-01-18 GreenMantra Recycling Technologies Ltd Method for producing waxes and grease base stocks
US10000715B2 (en) 2013-01-17 2018-06-19 Greenmantra Recycling Technologies Ltd. Catalytic depolymerisation of polymeric materials
US10472487B2 (en) 2015-12-30 2019-11-12 Greenmantra Recycling Technologies Ltd. Reactor for continuously treating polymeric material
US10597507B2 (en) 2016-02-13 2020-03-24 Greenmantra Recycling Technologies Ltd. Polymer-modified asphalt with wax additive
US10723858B2 (en) 2018-09-18 2020-07-28 Greenmantra Recycling Technologies Ltd. Method for purification of depolymerized polymers using supercritical fluid extraction
US10870739B2 (en) 2016-03-24 2020-12-22 Greenmantra Recycling Technologies Ltd. Wax as a melt flow modifier and processing aid for polymers
US11072676B2 (en) 2016-09-29 2021-07-27 Greenmantra Recycling Technologies Ltd. Reactor for treating polystyrene material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003768A1 (en) * 1980-02-01 1981-08-06 Ljudmila Konstantinovna Ašichmina METHOD FOR THE CONTINUOUS PRODUCTION OF POLYOLEFIN WAX
FR2613721B1 (en) * 1987-04-07 1992-03-06 Gensac Patrice PROCESS FOR THE MANUFACTURE OF ARTIFICIAL WAXES
DE102018112016B4 (en) 2018-05-18 2022-04-28 Edl Anlagenbau Gesellschaft Mbh Device and method for the thermal depolymerization of polyolefinic plastics

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087922A (en) * 1958-05-13 1963-04-30 Phillips Petroleum Co Method and apparatus for pyrolyzing polymers
US3248469A (en) * 1961-08-28 1966-04-26 Phillips Petroleum Co High shear visbreaking method and apparatus
NL297178A (en) * 1962-08-31 1900-01-01
FR1457575A (en) * 1965-05-11 1966-01-24 Leuna Werke Veb Process for the manufacture of ethylene polymerizates and mixed ethylene polymerizates of low molecular weight and of waxy consistency as well as the polymerizates conforming to those obtained by said process

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136437A (en) * 1983-03-07 1984-09-19 Rinne K T I Kabushiki Kaisha Method and equipment for manufacturing paraffin wax-like substances
US5292862A (en) * 1990-04-10 1994-03-08 Mitsui Petrochemical Industries, Ltd. Method for the pyrolysis of polymers
US5631346A (en) * 1994-10-21 1997-05-20 Basf Aktiengesellschaft Thermomechanical degradation of polyolefins
EP2407528A1 (en) * 2010-07-15 2012-01-18 GreenMantra Recycling Technologies Ltd Method for producing waxes and grease base stocks
US8664458B2 (en) 2010-07-15 2014-03-04 Greenmantra Recycling Technologies Ltd. Method for producing waxes and grease base stocks through catalytic depolymerisation of waste plastics
US10000715B2 (en) 2013-01-17 2018-06-19 Greenmantra Recycling Technologies Ltd. Catalytic depolymerisation of polymeric materials
US10457886B2 (en) 2013-01-17 2019-10-29 Greenmantra Recycling Technologies Ltd. Catalytic depolymerisation of polymeric materials
US11072693B2 (en) 2015-12-30 2021-07-27 Greenmantra Recycling Technologies Ltd. Reactor for continuously treating polymeric material
US10472487B2 (en) 2015-12-30 2019-11-12 Greenmantra Recycling Technologies Ltd. Reactor for continuously treating polymeric material
US11739191B2 (en) 2015-12-30 2023-08-29 Greenmantra Recycling Technologies Ltd. Reactor for continuously treating polymeric material
US10597507B2 (en) 2016-02-13 2020-03-24 Greenmantra Recycling Technologies Ltd. Polymer-modified asphalt with wax additive
US11279811B2 (en) 2016-02-13 2022-03-22 Greenmantra Recycling Technologies Ltd. Polymer-modified asphalt with wax additive
US10870739B2 (en) 2016-03-24 2020-12-22 Greenmantra Recycling Technologies Ltd. Wax as a melt flow modifier and processing aid for polymers
US11987672B2 (en) 2016-03-24 2024-05-21 Greenmantra Recycling Technologies Ltd. Wax as a melt flow modifier and processing aid for polymers
US11072676B2 (en) 2016-09-29 2021-07-27 Greenmantra Recycling Technologies Ltd. Reactor for treating polystyrene material
US11859036B2 (en) 2016-09-29 2024-01-02 Greenmantra Recycling Technologies Ltd. Reactor for treating polystyrene material
US10723858B2 (en) 2018-09-18 2020-07-28 Greenmantra Recycling Technologies Ltd. Method for purification of depolymerized polymers using supercritical fluid extraction

Also Published As

Publication number Publication date
BE754562A (en) 1971-02-08
DE1940686C3 (en) 1982-06-03
DE1940686B2 (en) 1978-10-19
FR2056681A5 (en) 1971-05-14
DE1940686A1 (en) 1971-02-25

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Legal Events

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