EP2247654A1 - Compositions de siloxane - Google Patents

Compositions de siloxane

Info

Publication number
EP2247654A1
EP2247654A1 EP08872134A EP08872134A EP2247654A1 EP 2247654 A1 EP2247654 A1 EP 2247654A1 EP 08872134 A EP08872134 A EP 08872134A EP 08872134 A EP08872134 A EP 08872134A EP 2247654 A1 EP2247654 A1 EP 2247654A1
Authority
EP
European Patent Office
Prior art keywords
siloxane
foams
foam
polyurethane
siloxanes
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Withdrawn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
EP08872134A
Other languages
German (de)
English (en)
Inventor
Martin Glos
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.)
Evonik Operations GmbH
Original Assignee
Evonik Goldschmidt GmbH
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 Evonik Goldschmidt GmbH filed Critical Evonik Goldschmidt GmbH
Publication of EP2247654A1 publication Critical patent/EP2247654A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805—Compounds having only one group containing active hydrogen
    • C08G18/2815—Monohydroxy compounds
    • C08G18/282—Alkanols, cycloalkanols or arylalkanols including terpenealcohols
    • C08G18/2825—Alkanols, cycloalkanols or arylalkanols including terpenealcohols having at least 6 carbon atoms
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/2805—Compounds having only one group containing active hydrogen
    • C08G18/2815—Monohydroxy compounds
    • C08G18/283—Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/6505—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6523—Compounds of group C08G18/3225 or C08G18/3271 or polyamines of C08G18/38
    • C08G18/6535—Compounds of group C08G18/3271
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7607—Compounds of C08G18/7614 and of C08G18/7657
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0025—Foam properties rigid
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • 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
    • C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof

Definitions

  • the invention relates to a process for the preparation of polyurethane foams from compositions containing polyols and isocyanates, wherein the preparation is optionally carried out in the presence of further additives and additives.
  • additives and additives typically must prior to the reaction between the polyol and the isocyanate is added to the system ⁇ additives and additives to ER to provide the desired foam properties range.
  • additives and additives include, for example, the class of siloxanes.
  • organomodified siloxanes are used as stabilizers. These siloxanes are often not added in pure form during foaming, but are blended with other non-silicon-containing components. This can serve to improve the meterability, since often only very small amounts of siloxane must be added to the mixture to be foamed.
  • the blending component can also improve the solubility of the siloxanes in the polyol mixture and thus additionally influence the foaming and the foam properties.
  • EP-0839852 describes the production of polyurethane foam using siloxanes in blends with vegetable oils consisting of different triglycerides.
  • the fatty acid esters are often raw materials that can also be used in food production, creating a competitive situation.
  • raw materials that are based on renewable resources, are good biodegradable and are not suitable for food production.
  • EP-0048984 describes blends of siloxanes with various water-soluble surfactants for use in polyester-polyurethane foam. These surfactants are often poorly biodegradable.
  • EP-0043110 blends of siloxanes with solvents such as e.g. Alkoxylates to glycerol, water, TMP, butanol or nonylphenol for use in highly elastic polyurethane foam described.
  • solvents such as e.g. Alkoxylates to glycerol, water, TMP, butanol or nonylphenol for use in highly elastic polyurethane foam described.
  • US-5236961 describes the preparation of polyurethane foams using alkylphenol ethoxylates as foam stabilizers derived from petrochemical sources.
  • EP-0734404 describes the production of PU foams using polyalkylene oxides, where the polyols Alkylene oxides are built up by using 10 to 90% butyl enoxide.
  • the most commonly used blending components include, for example, phthalic acid esters, nonylphenol ethoxylates or butanol alkoxylates.
  • the object of the present invention is therefore to find a process for the preparation of advantageous, alternative siloxane compositions, the siloxane compositions themselves, their use and polyurethane and / or polyisocyanurate and / or polyurea foams additized therewith.
  • Polyurethane and / or polyisocyanurate and / or polyurea foams in the context of this invention are understood to mean reaction products of polyols and isocyanates, the preparation optionally also being carried out in the presence of further additives and additives.
  • Another object of the present invention is the loading of a woman on top mixing component for siloxanes in the Po ⁇ lyurethan- and / or polyisocyanurate and / or polyurea foam production.
  • CNSL cashew nut shell oil
  • the invention thus addresses the improvement of the process for preparing polyurethane foams using alkylphenol-containing compositions, such as those found in CNSL-based products.
  • CNSL is the short name for Cashew Nut Shell Liquid, meaning cashew nut shell oil.
  • the compositions according to the invention contribute to an improvement in the foam properties.
  • raw materials are used to produce the siloxane composition, which consists of non-petrochemical products, ie a high proportion of renewable raw materials.
  • the present invention is the preparation of polyurethane foams from compositions containing polyols and isocyanates, wherein the preparation in the presence of a particular silicon-containing copolymer surfactant, for example a siloxane, is performed.
  • a particular silicon-containing copolymer surfactant for example a siloxane
  • the Sili ⁇ zium-containing surfactant is mixed with the CNSL-based Verbin ⁇ applications to not only improve the controllability of the SII oxane, but also the properties of the foam thus produced.
  • the advantage is that one obtains equivalent or better results in the foaming than when using e.g. Nonylphenol ethoxylates or other blending components.
  • CNSL-based products are well biodegradable, toxi ⁇ ecologically harmless and are derived from natural disadvantages growing raw materials. Furthermore, the CNSL-based products not for the production of food suitable and therefore not enter into "competition" for food ⁇ food production.
  • Cashew nut shell liquid thus Cashew nut shells oil. This is obtained by extraction of the outer shell of the cashew nut. Most of the extract is obtained by heating the shells. However, it can also be prepared by extraction methods in which solvents are used.
  • the extract may have variable compositions depending on its origin and method.
  • the main components are: Cardanol, Anacard acid, Cardol and Methylcardol.
  • the proportion of anacardic acid and cardanol can vary greatly, since the anacardic acid is decarboxylated by heating during the hot extraction and thus converted to cardanol.
  • cardanol is obtained from the CNSL as an alkylphenol component, which can then be further processed into a wide variety of products (alkoxylates, formaldehyde resins, etc.). Cardanol is obtained by distillation from CNSL.
  • the various CNSL based products can be used for the blends according to the invention, such as For example, the extract itself, the distillation products or even the distillation residues.
  • Cardanol production from CNSL is among others described in the patent applications DE-IO 2005 017126, DE-I 0 2005 017125.
  • CNSL e.g. Alkoxylates
  • resins which can be prepared by reactions with aldehydes, or oxidation products of CNSL, etc.
  • CNSL e.g. Alkoxylates
  • resins which can be prepared by reactions with aldehydes, or oxidation products of CNSL, etc.
  • These derivatives have hitherto been used only as a polyol component in polyurethanes.
  • the use as a blending component for siloxanes is not described.
  • US-7084103 describes ethoxylates of Cardanol and Cardol and their use as lubricants or dispersants.
  • GB-2262525 describes the preparation of ethoxylates ba ⁇ sierend in the technical cashew nut shell oil.
  • Cardanol derivatives (Anacardklare, Cardanol, Cardol) are named and described as the basis for the ethoxylation, and their use as emulsifiers in the alkyd resin system.
  • EP-1765901 describes polyols for the production of PU hard foam, which are produced on the basis of CNSL by epoxidation of the double bonds in the alkylene side chain and subsequent ring opening in order to increase the OH number of the polyol.
  • the use of the CNSL-based polyols as blending component for the siloxanes is not described ⁇ ben.
  • EP-1723187 describes the preparation of polyols based on distillation residues from cardanol production. These residues are reacted with alkylene oxides and the resulting polyols used for the preparation of PU binder mixtures.
  • IN 180735 describes polyols for the production of PU hard foam which are prepared on the basis of CNSL mixtures by reaction with reaction products of castor oil reaction products and polyhydroxy compounds, such as, for example, B. pentaerythritol.
  • DE-10106144 describes the use of cardanol-aldehyde resins as asphaltene dispersants in crude oil.
  • the color and odor of the CNSL-based products can be optimized and used in more demanding applications.
  • suitable perfumes may be used to tailor the olfactory properties.
  • siloxane copolymers or siloxanes the substances which are suitable according to the prior art can be used.
  • foam type rigid foams, hot-foams, viscoelastic foams, ester foams, HR foams, semi-rigid foams
  • a suitable siloxane must be used.
  • the proportion of siloxane copolymer in the blend can be from 0.1 to 98%, preferably from 0.3 to 95%, particularly preferably from 0.5 to 90%, in particular from 1 to 80% or from 5 to 70% and most preferably 10 to 60%, optionally depending on the intended use, in each case based on percent by weight of the total mixture.
  • the proportion of CNSL-based products is from 2 to 99.9%, preferably from 5 to 99.7%, particularly preferably from 10 to 99.5%, in particular from 20 to 99% or from 30 to 95% and very particularly preferably from 40 to 90%, optionally depending on the particular intended use, in each case based on percent by weight of the total mixture.
  • the composition may also optionally contain the blending components known from the prior art, for example polyethers, nonylphenol ethoxylates, nonionic surfactants, ionic surfactants and other substances or auxiliaries, in proportions of 0 to 95%, or . from 0.1 to 80%, based on weight percent Ge ⁇ the total mixture.
  • blending components known from the prior art, for example polyethers, nonylphenol ethoxylates, nonionic surfactants, ionic surfactants and other substances or auxiliaries, in proportions of 0 to 95%, or . from 0.1 to 80%, based on weight percent Ge ⁇ the total mixture.
  • the tasks of the siloxane may be quite different with regard to the flexible polyurethane foams, depending on which properties the foam formulation entails.
  • the basic requirement is the stabilization of the foam desired, ie the avoidance of collapse ⁇ phenomena .
  • the requirements for the siloxanes may then be toward cell regulation, cell opening or flow enhancement, an example of which may be molded foams for making car seats.
  • siloxane-containing formulations according to the invention are suitable for all types of foam which can be prepared by reacting polyols with polyisocyanates (rigid foams, hot-foams, viscoelastic foams, ester foams, HR foams, semi-rigid foams, etc.).
  • polyisocyanates rigid foams, hot-foams, viscoelastic foams, ester foams, HR foams, semi-rigid foams, etc.
  • the foams are produced by the known processes by reacting polyols and isocyanates with Essence of a blowing agent, which soft foams, semi-rigid foams or rigid foams may arise, depending on which polyols and isocyanates used. These may be polyurethane, polyisocyanurate or polyurea foams.
  • suitable polyols are ⁇ sets. This may be act to polyether or polyester polyols typically carry 2 to 6 OH groups per molecule and may also contain heteroatoms such as nitrogen, phosphorus or halogens, in addition to carbon, hydrogen and Sauer ⁇ material.
  • organic polyisocyanates are used which have a functionality greater than or equal to 2.
  • Corresponding compounds are known and commercially it ⁇ linguallich.
  • blowing agent is needed. All known blowing agents can be used. This may be as a chemical blowing agent water, which releases by re ⁇ action with the isocyanates carbon dioxide. However, it is also possible to use carbon dioxide directly as a physical blowing agent or other blowing agents which are vaporized by a suitable boiling point in the exothermic reaction. Examples of these are halogenated hydrocarbons or hydrocarbons such as pentane isomers. It is also possible to combine the two methods.
  • the urethane foam reaction is usually by suitable
  • Catalysts triggered or controlled For example, tertiary amines or metal-containing catalysts (containing, for example, tin, potassium, zinc) are used here.
  • the foams can be prepared by the known methods.
  • the silicon-containing surfactant mixture can be mixed directly for foaming with the polyols and isocyanates. However, it is also possible to prepare a premix of the surfactant, one or more blowing agents, the polyol and the catalysts.
  • blowing agents and polyisocyanates for Her ⁇ position of polyurethane foams which are customary in this field for the respective types of foam compounds as such can.
  • Suitable siloxanes are described, for example, in the following documents: EP-0839852, EP-1544235, DE-IO 2004 001 408, EP-0839852, WO-2005/118668, US-20070072951, DE-2533074, EP-1537159 EP-0533202, US-3933695, EP-0780414, DE-4239054, DE-4229402, EP-0867465.
  • the foam composition may contain further excipients which are required for the production and / or use of the foam and which are compatible with the composition.
  • Foam-trained professional are familiar and familiar. These are, for example, flame retardants, dyes, pigments ⁇ preparations, cell openers, biocides, antistatic additives etc ..
  • Siloxane 1 Polyethersiloxane as in EP 1544235 A1 in Example
  • Siloxane 2 Polydimethylsiloxane, as described in DE 2533074 Al Example 4 as mixture 1.
  • siloxane 3 is a polyether siloxane according to the following formula:
  • the preparation of such Si-C-linked polyethersiloxanes is described for example in US 4,147,847, EP 0493836 and US 4,855,379.
  • Siloxane 4 According to the methods described in DE 43 17 605, a 1, 1, 1, 2, 3, 3, 3-heptamethyltrisiloxane with an allyl alcohol started polyether having a PO content of 30% and EO content of 70% and an average molar mass of 900 g / mol with a suitable Pt catalyst to the corresponding polyether siloxane reacted:
  • CNSL CT Cashew Nut Shell Liquid from Imperial Oil Import
  • CNSL RS 1 Residue from CNSL distillation available from Imperial Oil Import
  • NC-700 + 5 EO Reaction product of Cardolite NC-700 with 5 moles of ethylene oxide per OH function
  • NC-700 + 5 PO Reaction product of Cardolite NC-700 with 5 mol of propylene oxide per OH function
  • Cardanol 1 Cardanol which was prepared by the process described in DE-102005017126.
  • Nonylphenol + 8EO Reaction product of nonylphenol with 8 moles of ethylene oxide per OH function, commercially available, for example, as Arkopal N 080 from Clariant L) Castor oil, commercially available, for example from Fa.
  • Blend according Tab.l 1.4 g (1, 5 parts) as a stabilizer
  • the foaming was carried out by hand mixing.
  • polyol, catalysts, water, the stabilizer formulation to be tested and propellant were weighed into a beaker and mixed with a paddle stirrer (6 cm diameter) for 30 s at 1000 rpm. Weigh again to was the evaporated during the mixing process of propellant be ⁇ true and then adds.
  • the MDI was added, the reaction mixture stirred with the described stirrer for 5 s at 3000 rpm and immediately in a 45 ° C thermostated aluminum mold of 145 cm x 14 cm x 3.5 cm in size transferred, which was on ⁇ clothes at an angle of 10 ° (along the 145 cm measured side) and inclined with polyethylene film.
  • the foam formulation was introduced at the lower side, so that the expanding foam fills the mold in the sprue area and rises in the direction of the higher side.
  • the amount of Schaumformu ⁇ lation used was so dimensioned that it was below the amount necessary for the minimum filling of the mold.
  • the length of the foam molding obtained after curing can thus be used - normalized to the weight - as a measure of the volume yield .
  • HR foam highly elastic foam, cold foam
  • the foams were ⁇ represents Herge in the known manner, by mixing all components except for the isocyanate in a beaker, then adding the isocyanate, and stirring it rapidly at high stirrer speed. was then added, the reaction mixture in a cuboid shape with the dimen ⁇ solutions 40x40x10 cm, which was heated to a temperature of 40 0 C and allowed to cure the composition for 10 minutes. Subsequently, the pressing forces were measured. Here, the foams were compressed 10 times to 50% of their height.
  • the first measured value (AD 1 in Newton) is a measure of the open-cell viscosity of the foam.
  • compositions according to the invention are suitable for producing highly elastic PU foams and that the open-cell nature (and the hardness) of the foam can be influenced by suitable choice of the blending component according to the invention.
  • siloxane blends were tested in a typical polyurethane hot foam formulation:
  • the return ⁇ case refers to the sagging of the foam surface after blowing off the Polyurethanheissweichschaumes. The relapse is measured 3 min after the blow-off.
  • the density was measured according to DIN EN ISO 845 and DIN EN ISO 823. The number of cells was counted by means of a magnifying glass with scaling in three places and the values were averaged.
  • the compressive strength according to DIN EN ISO 3386-1 was measured and the SAG factor was calculated from the quotient of the compression hardness at 65% compression and 25% compression of the foam. Thus, the SAG factor is a measure of the elasticity of the foam.
  • Table 5 shows the results of the polyurethane hot soak foam test. They are the siloxane mixture used, the rise time (SZ) in seconds, the foam height (SH) in cm, the relapse (RF) in cm, the density (RG) in kg / m and the cell number (ZZ) in cells / cm and the SAG factor (SAG-F). Table 5:
  • siloxane formulations (compositions) according to the invention are suitable for producing hot-soft foam and, in addition, an improvement in the SAG factor (elasticity) can be achieved.
  • siloxane blends were evaluated in a typical polyester polyurethane foam formulation:
  • Raw materials Desmophen 2200 from Bayer, tolylene diisocyanate (TDI 80/20) from Bayer, N-methylmorpholine (NMM).
  • Foam formulation 100 parts Desmophen 2200 polyester polyol, 56.5 parts TDI 80, 5.1 parts water, 1.4 parts NMM, 1.0 part siloxane blend. Execution :
  • the air permeability is a measure of the proportion of open cells in the foam. For many applications, a possible open-cell foam is desired.
  • the open cells of the foams was determined by the air permeability ⁇ .
  • the air permeability is given in mm.
  • Back pressure Water column which builds up when a constant air flow of 480 l / h is passed through the foam. The higher the value, the more closed the foam and vice versa.
  • Table 6 shows the results of the foaming of mixtures according to the invention (Examples 32 and 33) and of a mixture not according to the invention
  • compositions according to the invention in the production of polyester-polyurethane flexible foams results in flawless foams and higher cell numbers can be achieved.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

L'invention concerne des compositions de siloxane contenant un composant de mélange à base d'huile de coque de noix de cajou (CNSL).
EP08872134A 2008-02-08 2008-12-12 Compositions de siloxane Withdrawn EP2247654A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008000255A DE102008000255A1 (de) 2008-02-08 2008-02-08 Siloxanzusammensetzungen
PCT/EP2008/067405 WO2009097936A1 (fr) 2008-02-08 2008-12-12 Compositions de siloxane

Publications (1)

Publication Number Publication Date
EP2247654A1 true EP2247654A1 (fr) 2010-11-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08872134A Withdrawn EP2247654A1 (fr) 2008-02-08 2008-12-12 Compositions de siloxane

Country Status (10)

Country Link
US (1) US8912277B2 (fr)
EP (1) EP2247654A1 (fr)
JP (1) JP2011512428A (fr)
KR (1) KR20100122900A (fr)
CN (1) CN101503571B (fr)
BR (1) BRPI0821907A2 (fr)
DE (1) DE102008000255A1 (fr)
MX (1) MX2010007481A (fr)
RU (1) RU2010137081A (fr)
WO (1) WO2009097936A1 (fr)

Families Citing this family (17)

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NL2002442C2 (nl) * 2009-01-22 2010-07-26 Weezenbeek Specialties B V Van Werkwijze voor het verjongen van een bitumen bevattende samenstelling.
DE102009028061A1 (de) 2009-07-29 2011-02-10 Evonik Goldschmidt Gmbh Verfahren zur Herstellung von Polyurethanschaum
DE102011007479A1 (de) 2011-04-15 2012-10-18 Evonik Goldschmidt Gmbh Zusammensetzung, enthaltend spezielle Amide und organomodifizierte Siloxane, geeignet zur Herstellung von Polyurethanschäumen
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US20110028578A1 (en) 2011-02-03
MX2010007481A (es) 2010-08-11
RU2010137081A (ru) 2012-03-20
BRPI0821907A2 (pt) 2015-06-16
CN101503571A (zh) 2009-08-12
US8912277B2 (en) 2014-12-16
DE102008000255A1 (de) 2009-08-20
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CN101503571B (zh) 2013-04-10
JP2011512428A (ja) 2011-04-21

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