EP3710215A2 - Procédé d'inhibition de produits chimiques nocifs formés dans des matériaux fabriqués et semi-fabriqués produits à partir de pet - Google Patents

Procédé d'inhibition de produits chimiques nocifs formés dans des matériaux fabriqués et semi-fabriqués produits à partir de pet

Info

Publication number
EP3710215A2
EP3710215A2 EP18879477.0A EP18879477A EP3710215A2 EP 3710215 A2 EP3710215 A2 EP 3710215A2 EP 18879477 A EP18879477 A EP 18879477A EP 3710215 A2 EP3710215 A2 EP 3710215A2
Authority
EP
European Patent Office
Prior art keywords
pet
polyethylene terephthalate
production
harmful chemicals
cooh
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.)
Withdrawn
Application number
EP18879477.0A
Other languages
German (de)
English (en)
Other versions
EP3710215A4 (fr
Inventor
Bilal DEMIREL
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.)
Erciyes Universitesi
Original Assignee
Erciyes Universitesi
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 Erciyes Universitesi filed Critical Erciyes Universitesi
Publication of EP3710215A2 publication Critical patent/EP3710215A2/fr
Publication of EP3710215A4 publication Critical patent/EP3710215A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181—Acids containing aromatic rings
    • C08G63/183—Terephthalic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes

Definitions

  • the present invention relates to a method for inhibiting acetaldehyde, carboxyl end groups, and diethylene glycol chemicals in case Mg 2 B 2 0s compound in ratio of 0.2% is added into PET during injection.
  • Polyethylene terephthalate is polyester which has various fields of use such as beverage, food and drink containers, synthetic fiber, and which can change its form with heat treatment.
  • PET polyethylene terephthalate
  • the most important advantage of polyethylene terephthalate (PET) is that it is a recyclable plastic.
  • two different production techniques of polyethylene terephthalate are known.
  • dimethyl terephthalate and ethylene glycol are used in the first method.
  • production is performed in two different ways, namely continuous and discontinuous.
  • PET polyethylene terephthalate
  • PET resins are comprised of small particles sold as pellet. First, these pellets are melted at a specific temperature, and then transferred to the injection machine in order to produce preform. Preforms generally have test tube appearance and are in different colors depending on the characteristics of the product to be manufactured. The weight of the preforms is generally 14-103 grams. PET production starts with preform.
  • the injection machine is comprised of two main parts; its first part is the part which comprises the components that melt the plastic materials and can inject into the mold. Its other part comprises the mechanisms which carry the mold and which can cover and uncover the mold, provide the molding pressure after it is covered, actuate the drivers, provide water supply and discharge for the cooling channels of the mold thereon.
  • the preform is heated with lamps called as "heating boxes”.
  • the assembly of the said lamps is called as profile.
  • the preform is sent into the mold.
  • the hot preform is stretched in the system.
  • the stretching rod enters into the preform and stretches the preform longitudinally.
  • the bottle takes its final form and the air therein is discharged.
  • Carboxyl end groups are one of the parameters affecting the reaction speed. In general, thermal and thermal oxidative degradation and the increase of carboxyl end groups cause degradation of PET and losses in molecular weight. The thermal degradation of PET chains generally originates from the carboxyl end groups and the presence of acetaldehyde. Yellowing in the PET material is observed with the increase of carboxyl end groups and acetaldehyde.
  • acetaldehyde is among the compounds which are likely to show carcinogenic effects on human health.
  • FIG 1 is the flowchart of the Polyethylene Terephthalate production.
  • Figure 4 is a graphical representation of the change of the diethylene glycol (DEG) in the mixture by weight (%) depending on the use of the pure g 2 B 2 0s compound (%) in PET mixture within the scope of the invention.
  • DEG diethylene glycol
  • PET Polyethylene Terephthalate
  • An inventive method for inhibiting harmful chemicals in production of PET materials enables the harmful chemicals such as acetaldehyde (AA), COOH end group content (COOH), diethylene glycol (DEG) which are created upon the chemical degradation of Polyethylene Terephthalate (PET) material during the period passing from the raw material until the final product in Polyethylene Terephthalate (PET) production process and which are by-products threatening human health, and comprises the steps of
  • step of mixing magnesium nitrate, boric acid and urea solutions 2 moles of Mg(N0 3 ) 2 , 2 moles of H 3 BO 3 and 4 moles of CH 4 N 2 O solutions are used.
  • the mixture in step of sintering the mixture in powder form in ash furnace, the mixture is sintered in the ash furnace at 900 °C.
  • Polyethylene terephthalate (PET) material chemically degrades in the period passing from the raw material until the final product and causes by-products threatening human health to be formed.
  • PET Polyethylene terephthalate
  • the formation of harmful chemicals such as acetaldehyde (AA), COOH end group content (COOH), diethylene glycol (DEG) is prevented in certain amounts by means of adding Mg 2 B 2 0s mineral in ratio of 0.2% into polyethylene terephthalate (PET) material in preform stage with injection.
  • Mg 2 B 2 0 5 particles used within the scope of the invention are produced with sol- gel method.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Detergent Compositions (AREA)

Abstract

La présente invention concerne un procédé d'inhibition d'acétaldéhyde, de groupes terminaux carboxyle, et de produits chimiques de diéthylène glycol dans un cas dans lequel un composé Mg2B2O5 à un taux de 0,2 % est ajouté dans du PET pendant l'injection. L'objet de la présente invention est d'empêcher la formation de produits chimiques nocifs tels que l'acétaldéhyde (AA), un contenu de groupes terminaux COOH (COOH), le diéthylène glycol (DEG) qui augmente avec une dégradation chimique du matériau de PET dans la période allant du matériau brut au produit final.
EP18879477.0A 2017-11-17 2018-11-01 Procédé d'inhibition de produits chimiques nocifs formés dans des matériaux fabriqués et semi-fabriqués produits à partir de pet Withdrawn EP3710215A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201718204 2017-11-17
PCT/TR2018/050648 WO2019098979A2 (fr) 2017-11-17 2018-11-01 Procédé d'inhibition de produits chimiques nocifs formés dans des matériaux fabriqués et semi-fabriqués produits à partir de pet

Publications (2)

Publication Number Publication Date
EP3710215A2 true EP3710215A2 (fr) 2020-09-23
EP3710215A4 EP3710215A4 (fr) 2021-08-18

Family

ID=66539124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18879477.0A Withdrawn EP3710215A4 (fr) 2017-11-17 2018-11-01 Procédé d'inhibition de produits chimiques nocifs formés dans des matériaux fabriqués et semi-fabriqués produits à partir de pet

Country Status (2)

Country Link
EP (1) EP3710215A4 (fr)
WO (1) WO2019098979A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2377237A1 (fr) * 1999-06-30 2001-01-04 The Dow Chemical Company Produits extrudes a partir de terephtalate de polyethylene possedant une teneur limitee en acetaldehyde et leur procede de fabrication
DE10045719B4 (de) * 2000-09-15 2018-01-11 Inventa-Fischer Gmbh & Co. Kg Verfahren zur Herstellung von Polyestern mit reduziertem Gehalt an Acetaldehyd
US7915374B2 (en) * 2009-04-27 2011-03-29 Eastman Chemical Company Copolyesters having improved thermal stability and methods for making them
US9828461B2 (en) * 2012-03-01 2017-11-28 Sabic Global Technologies B.V. Poly(alkylene co-adipate terephthalate) prepared from recycled polyethylene terephthalate having low impurity levels
CN104151577A (zh) * 2014-08-19 2014-11-19 南通瑞隆新材料有限公司 一种增强pet改性工程塑料的制备方法

Also Published As

Publication number Publication date
WO2019098979A3 (fr) 2019-06-13
WO2019098979A2 (fr) 2019-05-23
EP3710215A4 (fr) 2021-08-18

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