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WO2004069913A1 - Additif destine a l'apport d'eau dispersee de façon homogene dans des materiaux polymeres et procede d'utilisation de l'additif - Google Patents

Additif destine a l'apport d'eau dispersee de façon homogene dans des materiaux polymeres et procede d'utilisation de l'additif Download PDF

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Publication number
WO2004069913A1
WO2004069913A1 PCT/DE2004/000181 DE2004000181W WO2004069913A1 WO 2004069913 A1 WO2004069913 A1 WO 2004069913A1 DE 2004000181 W DE2004000181 W DE 2004000181W WO 2004069913 A1 WO2004069913 A1 WO 2004069913A1
Authority
WO
WIPO (PCT)
Prior art keywords
additive
carrier material
percent
polymer melt
weight
Prior art date
Application number
PCT/DE2004/000181
Other languages
German (de)
English (en)
Inventor
Helmut G. Schrader
Original Assignee
Schrader Helmut G
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
Priority claimed from DE10335486A external-priority patent/DE10335486B4/de
Application filed by Schrader Helmut G filed Critical Schrader Helmut G
Publication of WO2004069913A1 publication Critical patent/WO2004069913A1/fr

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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds

Definitions

  • the invention relates to an additive for introducing homogeneously distributed water into polymeric materials during manufacturing and processing processes.
  • the invention further relates to a method for reducing pollutants and / or odor-emitting substances in polymeric materials and a method for producing foamed plastics.
  • Polymer materials primarily thermoplastics and elastomers, are subject to ever increasing quality requirements with regard to compliance with the minimum limit values for hydrocarbon emissions and odor-emitting substances.
  • these limit values for plastics are required in the application for food packaging, medical technology, general technology and in vehicle technology (interior / exterior).
  • Adsorber and absorber additives for reducing pollutant emissions are also added to the plastics (US Pat. No. 4,795,482). Vacuum degassing systems are also in use. These processes have not led to a generally satisfactory and commercially justifiable result. Dynamic (thermal desorption) and static (GC headspace) measurement methods as well as olfactometric assessments demonstrate a low possibility of reducing hydrocarbon emissions through the aforementioned technologies.
  • the additive according to the invention can also be used in a different way, namely as a foam additive for plastics by controllable pore formation through dispersing gas bubbles.
  • the additive according to the invention can be mixed directly into powder form, with or without the addition of binders, to agglomerates, pressed into granules or tabletted and coated (coated).
  • an advantageous embodiment of the invention consists in that the carrier material is a zeolite structure type X, preferably an alkali aluminum silicate.
  • a sodium aluminum silicate has proven to be advantageous.
  • the carrier material has a pore size of 0.7 n to 1.2 nm.
  • This training enables the binding of non-volatile substances in the the evaporation of the water-released pores of the carrier material. In this way, in addition to the removal of the volatile compounds, the non-volatile compounds are rendered harmless.
  • the polymers themselves are not changed significantly, since the carrier material is not changed chemically and the particles and thus the pores are small compared to the macromolecules of the polymers.
  • the carrier material is silica.
  • silica is added as a further carrier material. This combines the advantages of both carrier materials mentioned.
  • Another advantageous embodiment improves the flow properties of the additive according to the invention in that a small proportion of powdered hydrophobic material is added to the loaded carrier material.
  • additives are added to improve the quality properties of plastics.
  • active substances are: stabilizers, antioxidants, and others.
  • Neutralizing agents nucleating agents, fragrances or adsorbing and absorbing active substances in solid, liquid or gaseous form.
  • a method according to the invention consists in that an additive which has a hydrophilic carrier material loaded with water with 30 to 90 percent by weight and a powdery and thus dispersible configuration is homogeneously incorporated into the polymer melt and that the polymer melt with the incorporated additive is exposed to negative pressure. It is preferably provided that the additive is incorporated at 0.2 to 10 percent by weight.
  • the additive according to the invention can also be used advantageously for the production of foamed plastic products.
  • the additive which has a hydrophilic carrier material loaded with water at 30 to 90 percent by weight and a powdery and thus dispersible configuration, homogeneously into the polymer melt with a dose of 0.1 to 25 percent by weight, is incorporated and after the polymer melt emerges from an extrusion or injection molding process with foaming.
  • the entrainer water is introduced into an area of high pressure of an extruder, in order to then evaporate in a subsequent vacuum area and to remove the volatile substances.
  • the introduction of the entraining agent into the high pressure area is associated with considerable technical outlay. This is saved in the additive according to the invention in that the . Additive is fed along with other components.
  • the additive is introduced into the polymer melt under pressure. This configuration can be advantageous in some applications, since the additive then remains fully effective until the evaporation process.
  • the substances supplied are in one area 5 of the extruder 1 is mixed and melted, the additive A, the fillers F and the active ingredients W being homogeneously distributed in the polymer melt. This process is continued in an area 6 with increased pressure.
  • the water carried by the additive carrier material evaporates and thus drives the volatile, harmful or odor-emitting substances out of the then foam-like melt.
  • a further increase in pressure also increases the degree of filling.
  • the finished plastic can be removed from 3 in the form of granules or extruded semi-finished products.
  • an additive Based on a hydrophilic, non-activated synthetic molecular sieve carrier material with a pore size of 0.7 nm to 1.2 nm and one Loading / saturation with liquid from 30 to 90 percent by weight, an additive is produced that still represents a powdery and nucleating structure and is metered directly into the plastic processing process (extrusion, injection molding, etc.) with 0.2 to 10 percent by weight.
  • the beginning of the evaporation phase depends on the limit pressure and the melt temperature.
  • the liquid evaporates at temperatures of 150 ° C to 400 ° C, which at the same time leads to concentrated blowing and exhaust of the volatile organic compounds and odor-emitting substances in the plastic, which can be done by means of ventilation or Vacuum degassing can be disposed of.
  • the volatile organic compounds and odor-emitting substances are blown out by dispersing gas bubbles.
  • the low-volatility organic compounds formed during the processing of plastics are adsorbed.
  • the solution of the invention makes it possible for the first time to supply the liquid required for evaporation with a loading level of 30 to 90 percent by weight to the carrier material and still to find a powdery and nucleating form of the additive which can be incorporated into the polymer melt in an excellent and homogeneous manner.
  • the boiling point and thus the evaporation phase can be precisely determined depending on the limit pressure and melt temperature in the processing process.
  • Additized plastics can be easily recycled or returned directly to plastics processing.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un additif destiné à l'apport d'eau dispersée de façon homogène dans des matériaux polymères lors de processus de fabrication et de traitement. Selon l'invention, un matériau support polymère hydrophile présente une charge en eau de 30 à 90 % en poids et une constitution pulvérulente qui est donc propice à la dispersion. Dans une utilisation préférée, ledit additif sert à réduire les émissions de substances nocives et/ou odorantes. A cet effet, l'additif est additionné de façon homogène à la fusion polymère, et celle-ci est soumise à pression avec l'additif additionné. L'additif selon l'invention est également adapté à la fabrication de produits plastiques expansés.
PCT/DE2004/000181 2003-02-07 2004-02-04 Additif destine a l'apport d'eau dispersee de façon homogene dans des materiaux polymeres et procede d'utilisation de l'additif WO2004069913A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10305052 2003-02-07
DE10305052.3 2003-02-07
DE10335486A DE10335486B4 (de) 2003-02-07 2003-08-02 Verfahren zur Minderung von Schadstoffen und/oder geruchsemittierenden Substanzen in polymeren Werkstoffen
DE10335486.7 2003-08-02

Publications (1)

Publication Number Publication Date
WO2004069913A1 true WO2004069913A1 (fr) 2004-08-19

Family

ID=32851839

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2004/000181 WO2004069913A1 (fr) 2003-02-07 2004-02-04 Additif destine a l'apport d'eau dispersee de façon homogene dans des materiaux polymeres et procede d'utilisation de l'additif

Country Status (1)

Country Link
WO (1) WO2004069913A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1921108A1 (fr) * 2006-11-11 2008-05-14 Helmut G. Schrader Procédé de réduction d'émissions de matières polluantes et/ou de substances odorantes dans des matières premières polymères
WO2010094416A1 (fr) 2009-02-19 2010-08-26 Bayer Materialscience Ag Procédé de compoundage pour la fabrication de compositions polymères à teneur réduite en composés organiques volatils

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01297429A (ja) * 1988-05-24 1989-11-30 Hoechst Gosei Kk 含水ゲル微粒子高含有分散液の製造方法
EP0351760A2 (fr) * 1988-07-19 1990-01-24 Mitsubishi Kasei Corporation Additif alimentaire destiné aus ruminants
JPH03103465A (ja) * 1989-07-13 1991-04-30 Akzo Nv ポリエーテルをベースとする増粘剤と固体から成る水に分散し得る及び懸濁し得る組成物
EP0441975A1 (fr) * 1989-09-04 1991-08-21 Nippon Shokubai Co., Ltd. Procede pour la preparation de resine pouvant absorber de l'eau
DE19520989A1 (de) * 1995-06-08 1996-12-12 Consortium Elektrochem Ind Cyclodextrinmodifizierte Polymere
WO1998024823A1 (fr) * 1996-12-06 1998-06-11 Dsm Chemie Linz Gmbh Procede de production de systemes pulverulents et secs inorganiques et organiques, recouverts de polymeres, et utilisation de ces systemes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01297429A (ja) * 1988-05-24 1989-11-30 Hoechst Gosei Kk 含水ゲル微粒子高含有分散液の製造方法
EP0351760A2 (fr) * 1988-07-19 1990-01-24 Mitsubishi Kasei Corporation Additif alimentaire destiné aus ruminants
JPH03103465A (ja) * 1989-07-13 1991-04-30 Akzo Nv ポリエーテルをベースとする増粘剤と固体から成る水に分散し得る及び懸濁し得る組成物
EP0441975A1 (fr) * 1989-09-04 1991-08-21 Nippon Shokubai Co., Ltd. Procede pour la preparation de resine pouvant absorber de l'eau
DE19520989A1 (de) * 1995-06-08 1996-12-12 Consortium Elektrochem Ind Cyclodextrinmodifizierte Polymere
WO1998024823A1 (fr) * 1996-12-06 1998-06-11 Dsm Chemie Linz Gmbh Procede de production de systemes pulverulents et secs inorganiques et organiques, recouverts de polymeres, et utilisation de ces systemes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0140, no. 80 (C - 0689) 15 February 1990 (1990-02-15) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1921108A1 (fr) * 2006-11-11 2008-05-14 Helmut G. Schrader Procédé de réduction d'émissions de matières polluantes et/ou de substances odorantes dans des matières premières polymères
WO2010094416A1 (fr) 2009-02-19 2010-08-26 Bayer Materialscience Ag Procédé de compoundage pour la fabrication de compositions polymères à teneur réduite en composés organiques volatils
DE102009009680A1 (de) 2009-02-19 2010-08-26 Bayer Materialscience Ag Compoundierungsverfahren zur Herstellung von Polymer-Zusammensetzungen mit reduziertem Gehalt an flüchtigen organischen Verbindungen
US8680201B2 (en) 2009-02-19 2014-03-25 Bayer Materialscience Ag Compounding method for producing polymer compositions with a reduced content of volatile organic compounds

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