EP1297061A1 - Utilisation de composes contenant des derives d'uree d'acide cyanoacetique et de l'uree en tant que stabilisateurs de matiere de synthese thermoplastiques chlorees - Google Patents

Utilisation de composes contenant des derives d'uree d'acide cyanoacetique et de l'uree en tant que stabilisateurs de matiere de synthese thermoplastiques chlorees

Info

Publication number
EP1297061A1
EP1297061A1 EP01949400A EP01949400A EP1297061A1 EP 1297061 A1 EP1297061 A1 EP 1297061A1 EP 01949400 A EP01949400 A EP 01949400A EP 01949400 A EP01949400 A EP 01949400A EP 1297061 A1 EP1297061 A1 EP 1297061A1
Authority
EP
European Patent Office
Prior art keywords
urea
chlorine
carbon atoms
atoms
compositions
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Withdrawn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
EP01949400A
Other languages
German (de)
English (en)
Inventor
Peter Daute
Jörg-Dieter KLAMANN
Ralf Picard
Dieter Marks
Peter Wedl
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 Personal Care and Nutrition GmbH
Original Assignee
Cognis Deutschland GmbH and Co KG
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 Cognis Deutschland GmbH and Co KG filed Critical Cognis Deutschland GmbH and Co KG
Publication of EP1297061A1 publication Critical patent/EP1297061A1/fr
Withdrawn legal-status Critical Current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
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/21—Urea; Derivatives thereof, e.g. biuret
    • 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
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/315—Compounds containing carbon-to-nitrogen triple bonds

Definitions

  • the invention relates to the use of compositions containing a combination of special urea derivatives of cyanoacetic acid and urea as stabilizers for chlorine-containing thermoplastics.
  • Halogen-containing plastics or molding materials made from them are known to tend to decomposition or decomposition reactions when they are exposed to thermal stress or come into contact with high-energy radiation, for example ultraviolet light.
  • Metal-containing stabilizers based on Pb, Ba, Cd, Sn, Ca and Zn are mostly used to stabilize PVC during processing.
  • Urea derivatives such as e.g. Diphenylthiourea proposed for stabilizing PVC (see Gumbleter / MüUer, "Kunststoff-Additive", Carl Hanser Verlag 1989, p. 312). These compounds are mostly used in combination with metal-containing stabilizers, since they usually do not result in sufficient long-term stabilization.
  • EP-A-768 336 describes stabilizer combinations for chlorine-containing polymers, in particular for polyvinyl chloride (PVC) containing special heterocyclic compounds, namely substituted uracil derivatives.
  • PVC polyvinyl chloride
  • This Compounds have high melting points (above 300 ° C) and can only be used in finely divided form in PVC processing.
  • EP-A-962 491 (Witco) describes the use of cyanoacetylureas for stabilizing halogen-containing polymers.
  • the object of the present invention was to provide stabilizers for halogen-containing plastics.
  • These stabilizers should be distinguished from the known prior art by an improved action profile.
  • halogen-containing plastics equipped with them should have improved values in the area of the initial color when subjected to thermal stress.
  • the stabilizers should also have the following properties: good compatibility with calcium and / or zinc compounds; easy incorporation into halogen-containing plastics without adversely affecting their rheological properties; good long-term stability of halogen-containing plastics, especially PVC (polyvinyl chloride).
  • compositions which on the one hand contain compounds a) which are formed by reacting substituted ureas with cyanoacetic acid and which on the other hand contain urea b) in addition to a good starting color also provide adequate long-term stability in the stabilization of chlorine-containing organic plastics.
  • compositions which contain both a) and b) are distinguished by a synergistic improvement in the stabilizing properties for halogen-containing polymers.
  • the present invention relates to the use of compositions comprising a) urea derivatives of cyanoacetic acid and b) urea as stabilizers for chlorine-containing thermoplastic materials.
  • the urea derivatives are substances of the general formula (A)
  • radicals R and R independently of one another each have an unbranched or branched, linear or cyclic alkyl radical having 1 to 18 carbon atoms or an aryl radical having 6 to 18 carbon atoms, which may be replaced by one or more alkyl radicals each having 1 to 6 carbon atoms -Atoms can be substituted.
  • compositions containing a) and b) are distinguished on the one hand by the fact that they are able to excellently stabilize halogen-containing organic plastics, in particular PVC, in particular against thermal degradation.
  • compositions containing a) and b) facilitate application in the plastic to be processed in that they are in liquid form at temperatures of about 180 ° C., at which PVC is usually processed.
  • radicals R and R independently of one another are each methyl, ethyl and phenyl.
  • the meaning methyl is particularly preferred for both radicals R 1 and R 2 ; this special compound is known from the literature as dimethyl (cyanoacetyl) urea.
  • compositions containing a) and b) are preferably added to halogen-containing plastics in amounts of from 0.01 to 10.0 parts by weight, based on 100 parts by weight of halogen-containing plastic.
  • Components a) and b) are contained in the compositions in a weight ratio a): b) in the range from 2: 1 to 1: 5. A range from 2: 1 to 1: 3 is preferred.
  • the compounds (A) can be prepared by synthesis methods known per se. These are known to the person skilled in the art. In particular, the production takes place by reacting the corresponding urea derivatives with cyanoacetic acid.
  • Component (B) consists of urea (melting point 133 ° C.), which is available in large quantities as an industrial raw material and is produced by generally customary methods.
  • compositions according to the invention comprising a) and b) are used in combination with one or more additives which are selected from the group of
  • additive In connection with the use of the term "additive" it should be pointed out that the person skilled in the field of plastics processing classifies the additives from both a structural and a functional point of view.
  • typical plastic additives are: antistatic agents, antifoggants, antioxidants, UV stabilizers, adhesives, calendering aids, mold release agents, lubricants, release agents, lubricants, plasticizers, fragrances, flame retardants, fillers, pigments, blowing agents, agents to increase thermal stability (thermal stabilizers ).
  • solid or liquid calcium salts and or magnesium salts and / or aluminum salts are used as lubricants or release agents at 20 ° C., which are selected from
  • lubricants or release agents that can be used alone or in combination with one another as component (B12) are the substances known for this from the prior art.
  • the following types of compounds are preferably suitable: hydrocarbon waxes which melt in the temperature range from 70 to 130 ° C., oxidized polyethylene wacb.se, free fatty acids with 8 to 22 carbon atoms and their branched chain isomers, for example stearic acid or also hydroxystearic acid, c-olefins, wax esters , ie esters from longer-chain monocarboxylic acids and monoalcohols, primary and secondary, saturated and unsaturated higher alcohols with preferably 16 to 44 carbon atoms in the molecule, ethylenediamine distearate, montanic acid ester of diols, for example ethanediol, 1,3-butanediol and glycerol, mixtures of such montanic acid esters with unesterified montanic acids, partial esters of
  • the mixed esters described in DE-C-19 07 768 with hydroxyl or acid numbers in the range from 0 to 6 can also be used from aliphatic, cycloaliphatic or aromatic dicarboxylic acids with 2 to 22 C atoms in the molecule, aliphatic polyols with 2 to 6 Hydroxyl groups in the molecule and aliphatic monocarboxylic acids with 12 to 30 C atoms in the molecule.
  • Examples include mixed esters of maleic acid-pentaerythritol-behenic acid, mixed esters of adipic acid-pentaerythritol-oleic acid and mixed esters of adipic acid-pentaerythritol-stearic acid.
  • Such lubricants or release agents can be used in the context of the present invention both individually and in combination with one another and also in combination with the calcium, magnesium, zinc or aluminum salts mentioned above.
  • Titanium dioxide is preferred for the pigments (C14).
  • fillers (C15) calcium carbonate (chalk), talc, kaolin and the like are preferred. Chalk is particularly preferred.
  • the invention further provides stabilizer compositions for chlorine-containing thermoplastic materials containing substances of the general formula (A)
  • radicals R and R independently of one another each have an unbranched or branched, linear or cyclic alkyl radical having 1 to 18 carbon atoms or an aryl radical having 6 to 18 carbon atoms, which is optionally replaced by one or more alkyl radicals each having 1 to 6 carbon atoms. Atoms can be substituted, as well as urea.
  • the stabilizer compositions according to the invention also contain one or more compounds from the abovementioned additive classes (Cl) to (C23).
  • the invention further relates to a process for stabilizing halogen-containing organic plastics, in which compositions are incorporated into the chlorine-containing plastics, the compounds of the general formula (A)
  • radicals R 1 and R 2 independently of one another each have an unbranched or branched, linear or cyclic alkyl radical having 1 to 18 carbon atoms or an aryl radical having 6 to 18 carbon atoms, which is optionally by one or more alkyl radicals each having 1 to 6 C atoms can be substituted, mean, and contain urea.
  • Example 1 Preparation of dimethyl (cyanoacetyl) urea by condensation of N, N-dimethylurea with cyanoacetic acid
  • PVC stabilizer mixtures (different urea derivatives):
  • Test formulation B4 is according to the invention. The other examples are for comparison.
  • Rolled skins were produced in accordance with the recipes and the static thermal stability at 180 ° C. was determined.
  • the rolled skins were produced by homogenizing and plasticizing the PVC powder mixture and the additives mentioned on a laboratory rolling mill for 5 minutes at 170 ° C.
  • Test pieces (test specimens) measuring 17 x 17 mm were cut out from the approximately 0.5 mm thick rolled skins thus produced.
  • test specimens were placed at 180 ° C in the warming cabinet on glass plates on rotating trays and removed again at 15-minute intervals until all samples were "burned" (i.e. had turned black).
  • example B4 according to the invention shows significantly better behavior than all non-comparison examples. From the table it can be seen that example B4 according to the invention shows significantly better behavior than all non-comparison examples.
  • PVC stabilizer mixtures (variation in the amount of urea):
  • test formulations B 8 to B1 The composition of the test formulations B 8 to B1 is shown below. The details are in parts by weight.
  • rolled skins were produced and the static thermal stability at 180 ° C. was determined.
  • the rolled skins were produced as described above.
  • test formulations containing the compound according to the invention according to Example 1 and urea brought about a significantly better thermal stabilization of PVC (initial color, color holding) than the other formulations (comparative examples).
  • the L *, a *, b * method known to the person skilled in the art was used for the further characterization of the rolled skins.
  • the b * value indicates the position on the blue / yellow axis.
  • the b * value is usually also called the yellow value.
  • a commercially available device with the designation "Micro Color" (company Dr. Lange) was used for the measurements. For this purpose, the test strips containing test substance were annealed at 180 ° C in a thermal oven, the test strips being briefly moved out of the oven every 15 minutes. The test results are summarized in Table 1.
  • Table 1 b * values (yellow values according to DIN 6174) Example after 0 minutes after 15 minutes

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)

Abstract

L'invention concerne l'utilisation de composés contenant des dérivés d'urée d'acide cyanoacétique et de l'urée comme stabilisateurs de matières de synthèse thermoplastiques chlorées. Ces dérivés d'urée sont des substances de formule générale (A), NC-CH2-CO-N(R<1>)-C0-NH-R<2>, dans laquelle les restes R<1> et R<2> signifient chacun et indépendamment l'un de l'autre un reste alkyle cyclique ou linéaire, ramifié ou non, comportant 1 à 18 atomes C ou un reste alkyle avec 6 à 18 atomes C, qui peut éventuellement être substitué par un ou plusieurs restes alkyle comprenant 1 à 6 atomes C.
EP01949400A 2000-06-21 2001-06-12 Utilisation de composes contenant des derives d'uree d'acide cyanoacetique et de l'uree en tant que stabilisateurs de matiere de synthese thermoplastiques chlorees Withdrawn EP1297061A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10030464 2000-06-21
DE10030464A DE10030464A1 (de) 2000-06-21 2000-06-21 Verwendung von Zusammensetzungen enthaltend Harnstoffderivate der Cyanessigsäure und Harnstoff als Stabilisatoren für chlorhaltige thermoplastische Kunststoffe
PCT/EP2001/006605 WO2001098400A1 (fr) 2000-06-21 2001-06-12 Utilisation de composes contenant des derives d'uree d'acide cyanoacetique et de l'uree en tant que stabilisateurs de matiere de synthese thermoplastiques chlorees

Publications (1)

Publication Number Publication Date
EP1297061A1 true EP1297061A1 (fr) 2003-04-02

Family

ID=7646441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01949400A Withdrawn EP1297061A1 (fr) 2000-06-21 2001-06-12 Utilisation de composes contenant des derives d'uree d'acide cyanoacetique et de l'uree en tant que stabilisateurs de matiere de synthese thermoplastiques chlorees

Country Status (6)

Country Link
US (1) US20040054227A1 (fr)
EP (1) EP1297061A1 (fr)
AU (1) AU2001270566A1 (fr)
DE (1) DE10030464A1 (fr)
PL (1) PL365128A1 (fr)
WO (1) WO2001098400A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056880A1 (de) * 2000-11-16 2002-05-23 Cognis Deutschland Gmbh Stabilisator-Zusammensetzung für halogenhaltige organische Kunststoffe
DE102007027371A1 (de) * 2007-06-11 2008-12-18 Cognis Oleochemicals Gmbh Verfahren zur Herstellung einer Verbindung aufweisend mindestens eine Ester-Gruppe
DE102010034512A1 (de) 2010-08-16 2012-02-16 Akdeniz Kimya Sanayi Ve Ticaret A.S. Stabilisatorkombination für PVC

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE613941A (fr) * 1961-02-15
US4252705A (en) * 1978-12-26 1981-02-24 Argus Chemical Corporation Resistance of polyvinyl chloride resins to discoloration during drying with N,N'-diphenyl urea
EP0573394B1 (fr) * 1992-06-04 1997-01-15 Ciba SC Holding AG Compositions de polymères chlorées et stabilisées
ATE257163T1 (de) * 1995-10-13 2004-01-15 Crompton Vinyl Additives Gmbh Stabilisatorkombinationen für chlorhaltige polymere
EP0962491B1 (fr) * 1998-06-02 2003-06-04 Crompton Vinyl Additives GmbH Cyanacetylurées pour stabiliser des polymères halogénés
DE19947860A1 (de) * 1999-10-05 2001-04-12 Cognis Deutschland Gmbh Verwendung von Harnstoffderivaten der Cyanessigsäure als Stabilisatoren für chlorhaltige thermoplastische Kunststoffe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0198400A1 *

Also Published As

Publication number Publication date
AU2001270566A1 (en) 2002-01-02
WO2001098400A1 (fr) 2001-12-27
US20040054227A1 (en) 2004-03-18
DE10030464A1 (de) 2002-01-03
PL365128A1 (en) 2004-12-27

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