BR9612060A - Espuma termoplástica e processo para a produção da mesma usando dióxido de carbono - Google Patents

Espuma termoplástica e processo para a produção da mesma usando dióxido de carbono

Info

Publication number
BR9612060A
BR9612060A BR9612060-6A BR9612060A BR9612060A BR 9612060 A BR9612060 A BR 9612060A BR 9612060 A BR9612060 A BR 9612060A BR 9612060 A BR9612060 A BR 9612060A
Authority
BR
Brazil
Prior art keywords
carbon dioxide
polymer melt
blowing agent
additives
thermoplastic foam
Prior art date
Application number
BR9612060-6A
Other languages
English (en)
Inventor
Gerald G Gusavage
Henry G Schirmer
Thomas A Hessen
Original Assignee
Cryovac Inc
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 Cryovac Inc filed Critical Cryovac Inc
Publication of BR9612060A publication Critical patent/BR9612060A/pt

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0014—Use of organic additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0264—Polyester
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2377/00—Polyamides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
    • C08J2201/03—Extrusion of the foamable blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Patente de Invenção para: <B>ESPUMA TERMOPLáSTICA E PROCESSO PARA A PRODUçãO DA MESMA USANDO DIóXIDO DE CARBONO"<D>. A presente invenção fornece um processo para a produção de espuma termoplástica, que inclui: (a) fusão de um polímero termoplástico para produzir uma massa fundida de polímero; (b) introdução de um agente insuflante de dióxido de carbono na massa fundida de polímero; (c) adição à massa fundida de polímero de um ou mais aditivos selecionados do grupo que consiste de: (1) polissiloxano, e (2) óleo mineral; e (d) extrusão e espumação fundida de polímero, agente insuflante e um ou mais aditivos para produzir espuma termoplástica. A espuma termoplástica resultante pode ser transformada em vários artigos espumados, tais como bandejas de espuma para embalagem. Foi descoberto que a qualidade das espumas obtidas a partir de um agente insuflante de dióxido de carbono e particularmente de 100% de dióxido de carbono é substancialmente melhorada por adição de um ou mais dos aditivos anteriores, isto é, polissiloxano, óleo mineral e, opcionalmente poliolefina à massa fundida de polímero durante a extrusáo e o processo de espumação. Tais espumas têm muito menos células rompidas, rachaduras na superfície e corrugação do que as espumas comparáveis obtidas com um agente insuflante de dióxido de carbono porém em que faltam os aditivos da presente invenção.
BR9612060-6A 1995-12-18 1996-12-18 Espuma termoplástica e processo para a produção da mesma usando dióxido de carbono BR9612060A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/573,812 US5670552A (en) 1995-12-18 1995-12-18 Foam and process for producing foam using a carbon dioxide blowing agent
PCT/IB1996/001478 WO1997022656A1 (en) 1995-12-18 1996-12-18 Thermoplastic foam and process for producing it using carbon dioxide

Publications (1)

Publication Number Publication Date
BR9612060A true BR9612060A (pt) 1999-12-28

Family

ID=24293488

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9612060-6A BR9612060A (pt) 1995-12-18 1996-12-18 Espuma termoplástica e processo para a produção da mesma usando dióxido de carbono

Country Status (11)

Country Link
US (2) US5670552A (pt)
EP (1) EP0868472B1 (pt)
CN (1) CN1080281C (pt)
AT (1) ATE207507T1 (pt)
AU (1) AU709247B2 (pt)
BR (1) BR9612060A (pt)
CA (1) CA2240774C (pt)
DE (1) DE69616377T2 (pt)
ES (1) ES2164267T3 (pt)
NZ (1) NZ324417A (pt)
WO (1) WO1997022656A1 (pt)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5962545A (en) * 1997-06-23 1999-10-05 The Dow Chemical Company Method of enhancing open cell formation in alkenyl aromatic polymer foams
US6428297B1 (en) * 1998-10-28 2002-08-06 Dart Container Corporation Apparatus for making a corrugation-free foam
US6288144B1 (en) 1999-04-20 2001-09-11 Uniroyal Chemical Company, Inc. Processing of coupled, filled polyolefins
DE19921386A1 (de) * 1999-05-10 2000-11-16 Basf Ag Offenzellig Partikelschaumstoffe
US6403663B1 (en) 1999-09-20 2002-06-11 North Carolina State University Method of making foamed materials using surfactants and carbon dioxide
US6773798B2 (en) * 1999-12-23 2004-08-10 Sealed Air Corporation (Us) Polyolefin foam composite structure and method for making the same
US6764756B1 (en) * 1999-12-23 2004-07-20 Sealed Air Corporation (Us) Polyolefin foam composite structure and method for making the same
CN1325544C (zh) 2000-10-24 2007-07-11 陶氏环球技术公司 多峰热塑性聚合物泡沫的无水制备方法和由该方法得到的泡沫
CN100343314C (zh) * 2000-12-21 2007-10-17 陶氏环球技术公司 包含正常液体氢氟碳和二氧化碳的发泡剂组合物和聚合物泡沫
US7658989B2 (en) * 2001-03-28 2010-02-09 North Carolina State University Nano-and micro-cellular foamed thin-walled material, and processes and apparatuses for making the same
CA2435144C (en) * 2003-07-15 2010-06-15 Beaver Plastics Ltd. Top dressing for seedling containers
US20060160928A1 (en) * 2005-01-18 2006-07-20 Cleveland Christopher S Thermoformed polystyrene products
US8314161B2 (en) 2005-08-22 2012-11-20 Owens Corning Intellectual Capital, Llc Deformable, rigid polystyrene foam board
DE102006014235A1 (de) * 2006-03-28 2007-10-04 Brugg Rohr Ag, Holding Mantel für wärmeisolierte Leitungsrohre
ITBO20070391A1 (it) * 2007-06-01 2008-12-02 Coopbox Europ Spa Foglia di materia plastica, vassoio per un prodotto alimentare ottenuto da detta foglia, confezione comprendente detto vassoio e relativo metodo di realizzazione.
CA2828727A1 (en) * 2011-03-02 2012-09-07 Mark Allen Nunley Methods for integrated natural gas purification and products produced therefrom
CN102924742B (zh) * 2011-08-12 2015-09-30 黑龙江鑫达企业集团有限公司 超临界co2法制备聚丙烯树脂发泡颗粒的方法
CN102504498B (zh) * 2011-10-10 2013-06-26 北京工商大学 发泡pet片材及其制备方法
WO2014018768A1 (en) * 2012-07-27 2014-01-30 Reedy International Corporation Additives for low loss wire and cable dielectrics
EP3180793B1 (en) 2014-08-15 2019-10-23 Dow Global Technologies LLC Polydimethylsiloxane grafted polyethylene foam
KR20180089467A (ko) * 2015-12-03 2018-08-08 다우 글로벌 테크놀로지스 엘엘씨 고다공성 미세기포 폴리에틸렌
US11414529B2 (en) * 2018-06-21 2022-08-16 Fina Technology, Inc. Polystyrene compositions for foam extrusion
PL3663339T3 (pl) * 2018-12-03 2024-09-23 Trinseo Europe Gmbh Pianki i sposób formowania pianek z jonomerów kopolimerów winylidenowego monomeru aromatycznego i związków nienasyconych z grupami kwasowymi

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4344710A (en) * 1980-06-10 1982-08-17 Mobil Oil Corporation Polymer foam extrusion system
US4424287A (en) * 1980-06-10 1984-01-03 Mobil Oil Corporation Polymer foam process
US4596832A (en) * 1980-07-28 1986-06-24 Dainippon Ink And Chemicals, Inc. Process for producing thermoplastic resin foam
US4452751A (en) * 1982-02-26 1984-06-05 The Dow Chemical Company Styrena polymer foam made with α-polyolefin additives
US4454086A (en) * 1982-06-18 1984-06-12 The Dow Chemical Company Making cross-linked styrene polymer foam
US4529740A (en) * 1984-02-06 1985-07-16 W. R. Grace & Co. Foamable hot melt polymer compositions
US4728674A (en) * 1986-11-03 1988-03-01 General Electric Company Modified polyphenylene ether resins having improved foamability and methods of making the same
US4935089A (en) * 1987-10-30 1990-06-19 W. R. Grace & Co.-Conn. Method of making a thermoformable barrier sheet
US4847148A (en) * 1987-10-30 1989-07-11 W. R. Grace & Co. Thermoformable barrier sheet
US5286429A (en) * 1988-06-27 1994-02-15 Mobil Oil Corporation High melt index polystyrene foam and method
JPH02240145A (ja) * 1989-03-14 1990-09-25 Sekisui Plastics Co Ltd ポリオレフィン樹脂発泡体の製造方法
US5250577A (en) * 1989-08-02 1993-10-05 The Dow Chemical Company Polystyrene foam made with only carbon dioxide as a blowing agent and a process for making the same
US5128196A (en) * 1990-03-16 1992-07-07 Amoco Corporation Foamed core-reclaim multi-layer sheet and process for production thereof
US5118561A (en) * 1990-10-01 1992-06-02 W. R. Grace & Co.-Conn. Recycling of barrier polystyrene foam scrap and barrier polystyrene foam containing recycled barrier polystyrene foam scrap
CA2083004A1 (en) * 1992-05-13 1993-11-14 Thomas Hessen Barrier polyprepylene foam trays
US5218006A (en) * 1992-06-01 1993-06-08 Reedy Michael E Process for producing polystyrene foam
US5288740A (en) * 1992-10-23 1994-02-22 The Dow Chemical Company Process for making alkenyl aromatic foam packing bodies with carbon dioxide and/or ethane blowing agent systems
US5269987A (en) * 1992-12-22 1993-12-14 Reedy Michael E Process for producing alkenyl aromatic foams using a combination of atmospheric and organic gases and foams produced thereby
US5422378A (en) * 1993-06-04 1995-06-06 The Dow Chemical Company Foamable styrenic polymer gel and resulting foam

Also Published As

Publication number Publication date
EP0868472B1 (en) 2001-10-24
ES2164267T3 (es) 2002-02-16
EP0868472A1 (en) 1998-10-07
CA2240774A1 (en) 1997-06-26
CA2240774C (en) 2004-08-31
AU709247B2 (en) 1999-08-26
AU1167997A (en) 1997-07-14
ATE207507T1 (de) 2001-11-15
CN1080281C (zh) 2002-03-06
DE69616377T2 (de) 2002-07-11
CN1209148A (zh) 1999-02-24
US5670552A (en) 1997-09-23
US5994420A (en) 1999-11-30
WO1997022656A1 (en) 1997-06-26
DE69616377D1 (de) 2001-11-29
NZ324417A (en) 1999-06-29

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