EP0775169A1 - Procede de production de polycondensats d'acide aspartique et leur utilisation dans des produits de lavage et de nettoyage - Google Patents

Procede de production de polycondensats d'acide aspartique et leur utilisation dans des produits de lavage et de nettoyage

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Publication number
EP0775169A1
EP0775169A1 EP95928485A EP95928485A EP0775169A1 EP 0775169 A1 EP0775169 A1 EP 0775169A1 EP 95928485 A EP95928485 A EP 95928485A EP 95928485 A EP95928485 A EP 95928485A EP 0775169 A1 EP0775169 A1 EP 0775169A1
Authority
EP
European Patent Office
Prior art keywords
acid
aspartic acid
washing
polycondensation
acids
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Withdrawn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
EP95928485A
Other languages
German (de)
English (en)
Inventor
Matthias Kroner
Norbert Gebhardt
Volker Schwendemann
Gunnar Schornick
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 SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of EP0775169A1 publication Critical patent/EP0775169A1/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Withdrawn legal-status Critical Current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
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1092—Polysuccinimides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3719—Polyamides or polyimides

Definitions

  • the invention relates to a process for the preparation of polycondensates of aspartic acid by polycondensation of aspartic acid in the presence of acids as a catalyst at temperatures of at least 140 ° C. and the use of polymers of aspartic acid as an additive to detergents and cleaning agents in quantities from 0.1 to 10% by weight, based on the washing and cleaning agents.
  • detergents which contain 10 to 40% by weight of a surfactant, 5 to 50% by weight of at least one sodium aluminum silicate, 0.5 to 70% by weight of at least one commonly used additive and 5 to 50% by weight of at least one polyamino acid, preferably polyaspartic acid or polyglutamic acid, as a builder.
  • Detergent formulations are known from EP-A-0 511 037 which preferably contain an imide of polyaspartic acid and / or polyglutamic acid in amounts of 0.2 to 80% by weight.
  • the polyaminocarboxylic acids described therein and the corresponding polyimides are biodegradable.
  • Example 9 of EP-A-0 511 037 for a polycondensate which is prepared by annealing L-aspartic acid at 220 ° C. for 6.5 hours and then hydrolysing with sodium hydroxide solution in an aqueous medium, according to the ISO test a degree of degradation of 75% was determined within 28 days. However, if you determine the degree of degradation of this condensate according to the modified Zahn-Wellens test described below, degrees of degradation between 50 and 60% are found.
  • the polycondensation processes of aspartic acid which are also known lead to polyaspartic acids which have considerable differences in their biodegradability.
  • the present invention has for its object to provide a process for the production of polycondensates of aspartic acid, in which polycondensates are obtained which are as completely biodegradable as possible and are effective in detergents and cleaning agents.
  • the object is achieved according to the invention with a process for the preparation of polycondensates of aspartic acid by polycondensation of aspartic acid in the presence of acids as a catalyst at temperatures of at least 140 ° C. if 1 to less than 5 mol% of phosphorous acid or hypophosphorous acid, based in each case on aspartic acid.
  • the invention also relates to the use of polycondensates of aspartic acid, which are obtained by polycondensation of
  • Aspartic acid can be used in the form of L-, D- and DL-aspartic acid. If necessary, it can contain water.
  • phosphorous acid or hypophosphorous acid is used as catalyst for the condensation of aspartic acid in amounts of 1 to less than 5 mol%, based on aspartic acid.
  • Phosphorous acid and hypophosphorous acid can optionally be anhydrous or used in the form of a solution.
  • suitable solvents are water, acetone or other customary solvents such as ethylene glycol, polyethylene glycols, polypropylene glycols, copolymers of ethylene oxide and propylene oxide, silicone oils, paraffin oils, vegetable and animal oils and fats.
  • anionic, cationic and nonionic surfactants for example alkoxylated C ⁇ to C 22 alcohols, alkoxylated alkylphenols, aliphatic and aromatic sulfonic acids with up to 30 C atoms, aliphatic and aromatic sulfuric acid semiesters of Ci to C 3 o-alcohols.
  • aspartic acid can also be polycondensed with less than 5 mol% of phosphorous acid or hypophosphorous acid. This results in polycondensates which, compared to 5 aspartic acid condensates, which have been produced in the absence of catalysts, have a particularly high biodegradability.
  • the degradation rates of polyaspartic acid, which is produced in the presence of phosphorous acid or hypophosphorous acid are at least 70, preferably at least
  • the polycondensation of aspartic acid can be carried out, for example, as a solid polycondensation or as a suspension in an inert solvent such as polyethylene glycol.
  • Aspartic acid is preferably polycondensed in the presence of 2 to 4.5% by weight of phosphorous acid, based on aspartic acid. With solid polycondensation
  • the particle diameter of aspartic acid is, for example, 10 ⁇ m to 5 mm, preferably 50 ⁇ m to 1 mm.
  • the polycondensation of aspartic acid is carried out at temperatures of at least 140 ° C.
  • the polycondensation temperature is usually in the range from 150 to 250.degree. Preferred
  • the temperatures are between 160 and 250 ° C. in order to obtain completely degradable polyaspartic acids.
  • solid condensation it has proven to be advantageous to apply phosphorous acid or hypophosphorous acid as uniformly as possible on the surface of the aspartic acid crystals.
  • 40 of the aspartic acid crystals with the solution can take place, for example, at temperatures of 10 to 200, preferably 20 to 150 ° C. Kneaders, extruders, fluidized bed reactors, solids mixers, paddle dryers and ball mills have proven to be suitable apparatuses for polycondensation.
  • the acids will be described in detail below.
  • the finely divided aspartic acid as a dilute aqueous solution.
  • the polycondensation can be recognized by a sudden occurrence of a pasty, highly viscous reaction mixture.
  • the aspartic acid particles impregnated with phosphorous acid or with hypophosphorous acid stick to one another for a period of about 1 to 30, usually 2 to 20 minutes and form a solid phase with high viscosity.
  • the duration of the sticky, highly viscous phase depends on the ratio of aspartic acid to phosphorous acid and on the reaction temperature. The higher the temperature, the shorter the viscous phase of the reaction mixture.
  • mechanical energy is introduced into the reaction mixture by stirring. Mixing of the reaction mass can be omitted during the viscous phase and can be resumed after passing through the viscous phase. As a result, the mechanical load on the polycondensation device is significantly reduced. After a maximum of 30 minutes, usually already after 5 to 15 minutes, the reaction mixture is brittle and can be divided into a fine powder by stirring or grinding.
  • the reason for this phenomenon is that the phosphorous acid diffuses into the interior of the aspartic acid particles and the surface is depleted of phosphorous acid.
  • the aspartic acid particles have not yet fully reacted in this state.
  • the required reaction time is controlled by diffusion, i.e. the rate of polycondensation depends on the rate of diffusion of the phosphorous acid into the interior of the aspartic acid crystals.
  • the reaction zone migrates from the crystal surface into the interior of the aspartic acid crystal, while the water of reaction migrates from the inside to the outside in the cavities formed.
  • a coherent mass is formed from the originally available powder, which is again easy to distribute, mix and stir due to the relatively low mechanical energy input.
  • all devices with strong stirring elements such as extruders, kneaders, paddle dryers and ball mills are suitable as devices.
  • the formation of a viscous phase on the surface of the aspartic acid crystals can be prevented if suitable additives are added.
  • the additives can be used before polycondensation. They have the effect that the wetted aspartic acid particles can no longer stick directly to one another, but rather through a separating layer from one another stay separated.
  • These additives can be liquids or solids. They can be used in amounts of 0 to 90, preferably 0 to 50% by weight, based on aspartic acid.
  • nonionic surfactants examples include nonionic surfactants, anionic surfactants, cationic surfactants, for example alkoxylated alkylphenols, alkoxylated C 1 -C 3 -alcohols, in particular ethoxylated and / or propoxylated aliphatic alcohols, aliphatic and aromatic sulfonic acids with 1 to 30 carbon atoms, aliphatic and aromatic sulfuric acid semiesters of ci- to C 3 rj alcohols, silicone oils, paraffin oils, vegetable and animal oils as well as fats and long-chain carboxylic acids with up to 30 carbon atoms, such as stearic acid, palmitic acid or behenic acid.
  • solids which act as separating agents during polycondensation are polyaspartimide, talc, zeolite, titanium dioxide,
  • the process according to the invention has the advantage that the acids used as catalysts can remain in the polycondensate due to their small amounts and do not have to be separated off.
  • Phosphorous acid and hypophosphorous acid are also suitable as catalysts in the production of cocondensates of aspartic acid, e.g. one can co-condense aspartic acid with other amino acids, for example with glutamic acid, glycine, lysine or with polyvalent carboxylic acids such as maleic acid, fumaric acid or succinic acid, hydroxycarboxylic acids such as malic acid, tartaric acid or citric acid.
  • polycondensates of aspartic acid which are obtained by polycondensation of (a) aspartic acid in the presence of (b) phosphorous acid or of hypophosphorous acid in a molar ratio (a): (b) of 1: 0.01 to 1: 10 at temperatures of at least 140 ° C., preferably below 250 ° C., and the at least partially neutralized polyaspartic acids produced therefrom by hydrolysis with bases have high biodegradation rates compared to thermally produced polyaspartic acid.
  • a ratio of aspartic acid: phosphorous acid or hypophosphorous acid of 1: 0.3 to 1: 1 is selected in the polycondensation of aspartic acid, the aspartic acid dissolves in the phosphorous acid or in the hypophosphorous acid and it creates a viscous solution. In the case of polycondensation, the viscosity of the reaction mixture rises sharply until a rigid foam forms, which can be broken up by a powerful mixing element. If a ratio of aspartic acid: phosphorous acid or hypophosphorous acid of 1: 1 to 1:10 is selected, the acids act as diluents for the polycondensation, since both aspartic acid and the polycondensate dissolve in it.
  • a solution of polyaspartimide in phosphorous or hypophosphorous acid is formed as the reaction mass.
  • the viscosity of the reaction mixture can be reduced by adding excess phosphorous acid, so that the mixtures are flowable solutions at the reaction temperatures.
  • Suitable apparatus for the polymerization of such mixtures are, for example, stirred tanks, thin-film reactors, extruders and kneaders.
  • the polycondensation in the temperature range from 150 to 170 ° C. gives rise to polycondensates which predominantly contain aspartic acid units, while at higher polycondensation temperatures, for example above 190 ° C., the polycondensates mainly contain succinimide units.
  • the acids used as catalyst can either remain in the polycondensate or can be removed from the polycondensate with the aid of extraction with water or organic solvents.
  • the polycondensates of aspartic acid, polyaspartimides can be used directly as an additive to detergents and cleaning agents or can be subjected to hydrolysis beforehand.
  • the polysuccinimides are slurried in water, for example, and a base is added, for example in the range from 8 to 10, under pH control.
  • the hydrolysis can optionally be accelerated by increasing the temperature. For example, it is possible to carry out the hydrolysis relatively quickly in the temperature range from 40 to 95 ° C. Depending on the amount of base used, the hydrolysis produces completely or partially neutralized polyaspartic acid.
  • Alkali metal and alkaline earth metal bases are particularly suitable for the hydrolysis, e.g. Sodium hydroxide solution, potassium hydroxide solution, soda, potassium carbonate, magnesium hydroxide, calcium hydroxide or barium hydroxide.
  • Ammonia and amines can also be used, e.g. Trimethylamine, triethylamine, diethylamine, ethanolamine, diethanolamine, triethanolamine and morpholine. If necessary, hydrolysis and neutralization can be accelerated by the action of ultrasound on the reaction partners.
  • the polyaspartic acids have a K value of 10 to 150 (determined according to H. Fikentscher in 1% by weight aqueous solution at 25 ° C. on the sodium salt and a pH value of 7).
  • the polyaspartic acids obtainable in this way have a molecular weight Mw of 1,000 to 200,000
  • the Mol mass M of the polyaspartic acids is preferably 1,200 to 100,000.
  • the polyaspartic acids or their salts prepared by polycondensation in the presence of phosphorous or hypophosphorous acid are added to detergents and cleaning agents in amounts of 0.1 to 10, preferably 1 to less than 5% by weight, based on the detergent and Cleaning agent used. They support the primary washing effect and have a dispersing effect on detached dirt in the wash liquor.
  • the polyaspartic acids to be used according to the invention have the advantage over the polyaspartic acids which can be prepared by other processes that they surprisingly have a significantly better biodegradability.
  • the polyaspartic acids and their salts are used in phosphate-free or reduced-phosphate washing and cleaning agents which contain at least one surfactant and, if appropriate, other customary constituents.
  • the phosphorus content of phosphate-reduced detergents is at most 25% by weight, calculated as Na triphosphate.
  • the detergents preferably contain surfactants that are completely biodegradable.
  • the detergents can be in powder form or can also be in liquid form.
  • the composition of the detergent and cleaning agent formulations can be very different. Detergent and cleaning agent formulations usually contain 2 to 50% by weight of surfactants and optionally builders. This information applies to both liquid and powder detergents. Detergent and cleaning agent formulations which are common in Europe, the USA and Japan can be found, for example, in Chemical and Engn. News, Volume 67, 35 (1989) is tabulated. Further information on the composition of detergents and cleaning agents can be found in Ullmann's Encyclopedia of Industrial Chemistry, Verlag Chemie, Weinheim 1983, 4th edition, pages 63-160.
  • the detergents can optionally also contain a bleach, for example sodium perborate, which, if used, can be present in the detergent formulation in amounts of up to 30% by weight.
  • a bleach for example sodium perborate
  • the detergents and cleaning agents can optionally contain other customary additives, for example complexing agents, opacifiers, optical brighteners, enzymes, perfume oils, color transfer inhibitors, graying inhibitors and / or bleach activators.
  • polyaspartic acids which have been prepared by polycondensation in phosphorous or hypophosphorous acid have better dispersing and primary washing power than polyaspartic acids which are prepared in the absence of the acids mentioned.
  • the K values of the polyaspartic acids were determined according to H. Fikentscher, Cellulose-Che ie, Vol. 13, 58 to 64 and 71 to 74 (1932) in aqueous solution at a temperature of 25 ° C and a concentration of 1% by weight. % determined at pH 7 on the sodium salt of polyaspartic acids.
  • the percentages in the examples are percentages by weight.
  • the reaction mixture has a marzipan-like consistency.
  • the stirring of the reaction mixture is then interrupted for 10 min. After stirring is resumed, the reaction mixture breaks down into a crumbly powder mass which can be easily mixed.
  • the polycondensation is completed with stirring at the temperatures given in the table. The time during which the reaction mass was stirred is given in the table.
  • the reaction mixture is then cooled and extracted by adding 1 liter of water with stirring.
  • the insoluble residue is washed with water and dried.
  • the pulverulent residue can be converted into aqueous sodium salt solutions of polyaspartic acid by hydrolysis with bases, for example sodium hydroxide solution in the pH range from 8 to 10.
  • bases for example sodium hydroxide solution in the pH range from 8 to 10.
  • the K value of the sodium salts of polyaspartic acids is given in the table and was determined in 1% strength aqueous solution at 25 ° C. and pH 7. Table 1
  • the polycondensates described in Table 1 were tested for their effectiveness as detergent additives.
  • the influence of the polycondensates on the primary washing capacity was tested as follows:
  • Clay minerals are colored and, when deposited on the fabric, give it a color veil.
  • cotton / polyester fabric with a clay mixture consisting of 33.3% each of the types 178 / R (ocher), 262 (brown) and 84 / rf (red-brown) from Carl Hunter, Hilgert, evenly coated.
  • the types of clay are different * fat ", ie they differ in the content of aluminum, iron and manganese oxide.
  • the clay mixture was homogeneously applied to the tissue in the form of a 20% suspension in demineralized water with vigorous pumping around the suspension This was carried out with a jigger from Jardinrs, Krefeld, at 10 meters / min using BW / PES 2 > fabric (33/67, from Winkler, Waldshut). After 3 runs, 600 1 was then completed Desalted water was rinsed once and then the wet fabric was dried in a tenter at 50 ° C. and a drying speed of 2 meters / min The clay fabric produced in this way contains 1.76% clay, determined by ashing at 700 ° C., 2.5 H. The washing tests were carried out under the following conditions;
  • Washing machine Launder-o-meter
  • Amount of liquor 500 g VE 1 'water + 80 ppm ethoxylated oxo alcohol
  • Test concentration of the polymer 80 ppm dirt tissue: 5 g clay tissue white tissue or clean tissue: 5 g PES / BW 2 1 tissue
  • the fabric After rinsing, the fabric is spun and the fabrics are hung up to dry individually. The tissue is measured with a
  • Elrepho 2000 from Data Color, Heidenheim, namely 6 measuring points per piece of fabric.
  • the wavelength range used for the evaluation is 420 to 700 n.
  • the reflectance is measured as a function of the wavelength.
  • Barium sulfate serves as a reference. According to W. Baumann, R. Broßmann, B.T. Groebel, N. Kleinemeier, M. Krayer, A.T. Leaver and H.-P. Oesch; Melliand Textilberichte 67 (1986), 562 et seq. Calculated the color strength with weighting of the eye irritation function.
  • the exact calculation methods can be found in Tenside, Surfactants, Detergents, 6, 1991, 497 ff.
  • the primary wash efficiency in% is calculated using the following equation:
  • Soiling dirty fabric before soiling

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Detergent Compositions (AREA)
  • Polyamides (AREA)

Abstract

L'invention concerne un procédé de fabrication de polycondensats d'acide aspartique par polycondensation d'acide aspartique à une température de 140 °C, en présence d'un catalyseur sous forme d'un à moins de cinq % en moles d'acide phosphorique ou hydrophosphorique, par rapport à l'acide aspartique. L'invention concerne également l'utilisation des polycondensats d'acide aspartique ainsi obtenus, sous forme d'additif dans des produits de lavage et de nettoyage, dans des proportions comprises entre 0,1 et 10 % en poids, par rapport aux produits de lavage et de nettoyage.
EP95928485A 1994-08-12 1995-07-28 Procede de production de polycondensats d'acide aspartique et leur utilisation dans des produits de lavage et de nettoyage Withdrawn EP0775169A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19944428597 DE4428597A1 (de) 1994-08-12 1994-08-12 Verfahren zur Herstellung von Polykondensaten der Asparaginsäure und ihre Verwendung in Wasch- und Reinigungsmitteln
DE4428597 1994-08-12
PCT/EP1995/003005 WO1996005243A1 (fr) 1994-08-12 1995-07-28 Procede de production de polycondensats d'acide aspartique et leur utilisation dans des produits de lavage et de nettoyage

Publications (1)

Publication Number Publication Date
EP0775169A1 true EP0775169A1 (fr) 1997-05-28

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ID=6525545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95928485A Withdrawn EP0775169A1 (fr) 1994-08-12 1995-07-28 Procede de production de polycondensats d'acide aspartique et leur utilisation dans des produits de lavage et de nettoyage

Country Status (3)

Country Link
EP (1) EP0775169A1 (fr)
DE (1) DE4428597A1 (fr)
WO (1) WO1996005243A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532717A1 (de) * 1995-09-05 1997-03-06 Basf Ag Verwendung von modifizierten Polyasparaginsäuren in Waschmitteln
EP0791616A1 (fr) * 1996-02-14 1997-08-27 Mitsubishi Chemical Corporation Procédé de production de polysuccinimide et utilisation desdits produits

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1240684B (it) * 1990-04-26 1993-12-17 Tecnopart Srl Poliamminoacidi quali builders per formulazioni detergenti
FR2675153B1 (fr) * 1991-04-15 1994-07-22 Rhone Poulenc Chimie Composition detergente contenant un biopolymere polyimide hydrolysable en milieu lessiviel.
DE4217847A1 (de) * 1992-05-29 1993-12-02 Basf Ag Verwendung von Kondensaten der Asparaginsäure als Belagsverhinderer bei der Eindampfung von Zuckersäften

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9605243A1 *

Also Published As

Publication number Publication date
DE4428597A1 (de) 1996-02-15
WO1996005243A1 (fr) 1996-02-22

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