FR2487873A1 - WASHING PRODUCT AND METHOD - Google Patents

Abstract

The object of the invention is a method for washing textile materials carried out in the presence of a mono- or diglycer of fatty acids, of a water-soluble or emulsifiable reaction product of an isocyanate with an alkoxylated compound, or of their mixtures. .

Description

The subject of the present invention is a process for washing materials

  textiles in drum washing machines for domestic and industrial use, process in which the formation of folds is eliminated. It is known that washing a textile material in drum washing machines, for domestic or industrial use, most often results in the formation of folds and damages the fibers, which

  makes subsequent ironing operations particularly

  particularly difficult. This is more particularly the case when large quantities of textile materials are treated by a small volume of washing bath,

  for example when washing machines are overloaded.

  It is currently common to treat textile materials, after the washing operation, with a cationic softening agent so as to obtain a soft and supple feel. As examples of such

  additives, there may be mentioned the ammonium compounds qua-

  ternary, especially distearyl dimethyl chloride

  ammonium and its alkoxyalkyl derivatives, and dialkylimidazolinium compounds. Although these compounds improve the feel of materials, they generally do not exert

  no effect on fold formation.

  By pursuing its research, the Applicant has now found that by adding certain textile lubricants, used as additives in dyeing processes, to the washing bath, textile materials can be washed in drum machines without wrinkles forming , while maintaining a

soft touch.

  The present invention therefore relates more particularly to

  especially a process for washing textile materials, process by which these materials are washed in the presence of an additive chosen from i) a monoglyceride or diglyceride of fatty acids, ii) a water-soluble or emulsifiable reaction product of an isocyanate with a alkoxylated compound, and

  iii) mixtures of the products specified under i) and ii).

  The additives suitable for the process of the invention are known; some of these compounds are commercially available as auxiliaries

  of dye. The appropriate products are those presented

  as a solubility or dispersibility in water of at least 1 g / liter, preferably at least 25 g / liter at 20, the solution or dispersion having to remain stable for at least 12 hours at room temperature. viscosity of such a 0.5% solution should not exceed 100 cp

at 20.

  The preferred additives are monoglycerides or diglycerides of fatty acids, in particular monoglycerides of fatty acids containing from 14 to 24 atoms

  carbon, more particularly fatty acids

  from 16 to 18 carbon atoms. The solubility or dispersibility of these compounds in water can be improved by the addition of a surfactant

  non-ionic, for example an alkoxylated fatty alcohol.

  Preferably, these additives are used in the form of a mixture containing up to 30% by weight of a fatty alcohol containing from 16 to 24 carbon atoms and ethoxylated by 5 to 50 moles, preferably 20 to 30 moles,

ethylene oxide.

  As another group of additives suitable for the process of the invention, it is possible to use the reaction products of an isocyanate with a compound

  alkoxylated which carry free final hydroxy groups.

  Particularly preferred compounds are those

  described in British patent 1,583,795, more

  especially the product of Example 14 which is the product of the reaction of tolyl diisocyanate with the adduct of triethanolamine and ethylene oxide. According to the process of the invention, the additives are preferably used at a concentration of between 0.5 g / liter and 50 g / liter, in particular between 0.5 g / liter and 30 g / liter. , more particularly between 1 and 5 g / liter of washing water. The additives can be added to the washing machine separately to the detergent, or can be incorporated into a solid washing powder or a liquid detergent composition. The present invention therefore also includes the detergent products containing the additives mentioned above, and the materials

  textiles washed using the new process.

  The following examples illustrate the present invention without in any way limiting its scope. The

  temperatures are all given in degrees Celsius.

  : - Examples 1 to 4 Washing conditions The washing operations described below are carried out in a fully automatic drum washing machine of the Schulthess Super 4 brand, the drum of which has a volume of 38 liters. Control

  washing programs are carried out by cards.

  The capacity of the washing machine is 1.2 kg of dry goods and 22 liters of cold water (with a hardness of around 110). Bath ratio is approximately 16: 1

  during washing and about 20: 1 during rinsing.

  The items to be washed are made up for each type of material of 3 pieces each having a dimension of x 30 cm. These samples were cut using

  serrated scissors and, in the case of synthetic fabrics

  ticks and mixed, the edges have been melted so as to avoid their chipping. As ballast, we use pieces of bleached and mercerized cotton poplin, g / m, size 40 x 30 cm. To load the machine, the ballast material is first individually thrown into the drum, then the different parts, each slightly crumpled. During washing, the position of the samples in the drum

  is not influenced and is only linked to chance.

  The washing is carried out either according to the program at 60P or according to the program at 930. In these two cases, the additive of the invention is added both during the pre-washing and during the washing-main cycle, in a proportion of 2 g / liter. In all cases, the additive is added to the water supply at the same time as the detergent. As a detergent, a commercial washing powder is added in an amount of about

1 g / liter.

  The washing program is carried out according to DIN 53920. For washing at 600 (program No. 4) the pre-washing temperature rises to 40, and that of the main washing to 600 for 10 minutes. During the washing cycle, the drum rotates according to a delicate laundry operation (approximately 9 seconds of rotation, then approximately 6 seconds of rest) and during the rinsing cycles in normal operation (approximately 13.5 seconds of rotation then approximately 1.5 second stop). Rinsing consists of a continuous initial rinsing cycle then 3 normal rinsing cycles. The rinse water from the last cycle is not automatically removed by the pump. The duration of the program is approximately

84 minutes.

  The washing program at 930 (program n ° 2) includes a pre-washing at 40, followed by the main washing at 930 for 10 minutes. Up to 80 and during the period after washing, the drum rotates in operation for delicate laundry, and for the rest in normal operation. The rinsing cycle is similar to that specified above for the -program

  # 4 and the duration of the program is approximately 120 minutes.

  In both cases, the final rinse water is removed using the pump and then wrung at a

  speed of 400 rpm for about 16 seconds.

  We then suspend the different rooms in order to

  let dry at room temperature.

Example 1

  Program No. 4 (wash 60) Parts of nylon satin, nylon, dacron 54, orlon 75, polyester / cotton 50/50 and polyester / cotton 67/33 are washed, all of these materials having been treated with a washed-ready-to-wear primer. As an additive, glycerol monostearate is used.

Example 2

  Program 4 (wash 60) The procedure is as described in Example 1 but the product of the reaction of tolyl diisocyanate with the adduct of triethanolamine and ethylene oxide (compound is used as additive) from example 14 of the British patent

No. 1,583,795).

  Example 3 Program 2 (washing 93) The parts to be washed consist of

  cotton poplin treated with a washed-ready insert-

  to wear. As an additive, a mixture containing

  75% by weight of glycerol monostearate and 25% by weight of polyglycolic ether of oleic alcohol

(22 units of ethylene oxide).

Example 4

  Program 2 (washing 93) The procedure is as described in Example 3 but

  the additive cited in Example 2 is used as an additive.

  Evaluation For each washed and dried sample, the number and clarity of the folds, the broken and pulled threads and the overall smooth appearance of the piece are determined visually. To determine the efficacy of the treatment, these samples are compared with control samples and the 5-step Monsanto standard. The results obtained for Examples 1 to 4 are good.

Claims (10)

  1.- A process for washing textile materials, characterized in that these materials are washed in the presence of an additive chosen from i) a monoglyceride or diglyceride of fatty acids, ii) a water-soluble or emulsifiable reaction product of a isocyanate with an alkoxylated compound, and   (iii) mixtures of the products specified under (i) and (iii).   2. A process according to claim 1, characterized in that the additive has a solubility or a dispersibility in water of at least 1 g / liter to 20, the solution or the dispersion thus obtained being stable for at least 12 hours at room temperature, and   such a 0.3% solution of this additive having a viscosity   site not exceeding 100 cp to 20.   3.- A process according to any one of   Claims 1 and 2, characterized in that the additive   is a monoglyceride of a fatty acid containing 14 to 24 carbon atoms.   4.- A method according to claim 3, characterized in that the additive is monostearate glycerol.   5.- A process according to any one of   claims 3 and 4, characterized in that the additive   is brought into play in the form of a mixture containing up to 30% by weight of a fatty alcohol containing from 16 to 24 carbon atoms and ethoxylated with 5 to 50 moles ethylene oxide.   6.- A process according to any one of   claims 1 and 2, characterized in that one uses,   as an additive, the reaction product of the diisocyanate   of tolyl with an adduct of triethanol- amine and ethylene oxide.   7.- A process according to any one of   claims 1 to 6, characterized in that one uses   the additive in a proportion of between 0.5 and 50 g / l washing bath.   8.- A method according to claim 7, characterized in that the additive is used in a proportion of between 2 and 5 g / liter of washing bath. 9.- A detergent product, characterized in that it contains an additive as specified in   any one of claims 1 to 6.   10.- Textile materials, characterized in that they have been washed according to the specified process   to any of claims 1 to 8. 3700 / BW / JH