PL165757B1 - Antistatic and softening agent - Google Patents

Abstract

Anti-electrostatic softener containing dialkyldimethylammonium chlorides and packaging substances such as fragrances, dispersants, dyes, pH regulators, preservatives, characterized in that it consists of 1-8% by weight of dialkyldimethylammonium chlorides having 12-22 carbon atoms w Alkyl chains, 0.1-2% by weight of N, N-di (polyoxyethylene) alkylamines N-oxides containing 12-22 carbon atoms in the alkyl chain and 9-12 oxyethylene groups, optionally up to 6% by weight of packaging materials and water up to 100% by weight.

Description

The subject of the invention is an anti-electrostatic softener intended for rinsing fabrics in households and laundries in order to prevent their electrification.

A commonly used method of anti-electrostatization and softening of textiles consists in rinsing the products after washing with aqueous solutions of dialkyldimethylammonium chlorides having two long-chain alkyl groups (C12-C22) and two methyl groups. Recent literature reports show that the conditioning effect of dialkyldimethylammonium chlorides is too weak. A modern fabric conditioning agent that meets the requirements of users well should have, in addition to its softening effect, also a number of other properties, the most important of which are: strong antistatic effect, no yellowing of the fabric, no corrosive effect, resistance to temperature changes, safety in contact with the skin and ease of use .

For example, a fabric conditioner, according to Polish Patent No. 123,144 containing dialkyldimethylammonium chlorides and alkylamine acetates, shows better anti-electrostatic properties compared to an agent containing only dialkyldimethylammonium chlorides while retaining the same amount of active substance. Another Polish patent description No. 152 625 discloses anti-electrostatic and softening properties of aqueous solutions of N, N-di (polyoxyethylene) alkylamines N-oxides having 12-22 carbon atoms of the alkyl chain and 8-22 oxyethylene groups. Although amine oxides have quite good antistatic properties, the disadvantage of their use is the bleaching of textiles.

The aim of the invention was to significantly improve the conditioning properties, in particular the anti-electrostatic properties of dialkyldimethylammonium chlorides.

The essence of the invention is the use of dialkyldimethylammonium chlorides containing two alkyl groups with 12-22 carbon atoms in a mixture with N, N-di (polyoxyethylene) alkylamines N-oxides with 12-22 carbon atoms in the alkyl chains and an average of 9-12 oxyethylene groups in the composition of the agent. .

The agent of the present invention consists of 1-8% by weight of dialkyldimethylammonium chlorides containing two alkyl chains of 12-22 carbon atoms, 0.1-2% by weight of N, N-di (polyoxyethylene) alkylamines N-oxides having 12-22 carbon atoms in alkyl chains and an average of 9-12 oxyethylene groups, optionally up to 6% by weight of packaging materials and water making up 100% by weight. The agent according to the invention exhibits outstanding functional properties, in particular antistatic properties.

Surprisingly, the anti-electrostatic synergy between dialkyldimethylamomic chlorides and N, N-di (polyoxyethylene) alkylamine N-oxides having an average of 9-12 oxyethylene groups per molecule was found.

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For example, polyacrylonitrile fiber washed in solutions containing 1.75% by weight of dialkyldimethylammonium chlorides derived from secondary plant C16-Cn amines, 0.25% by weight of N, N-di (polyoxyethylene) alkylamines N-oxides containing a C1-C8 plant alkyl chain and on average 11 oxyethylene groups, when using 30 g of the preparation per 4 dm ^{3 of} water, are characterized by a specific resistance of 6.3 × 10 ² 2Ω / cm. The same fiber, with the same amount of preparation in the bath, in the presence of only dialkyldimethylammonium chlorides (2 wt%), showed a specific resistance of 2x 10 ⁶ MΩ / cnr, and in the case of only 2 wt% N, N-di (polyoxyethylene) N-oxides Alkylamines containing 11 oxyethylene groups showed a specific resistance of 0.5 χ 1 (0 MOcm? Similar relationships were obtained for fabrics made of polyamide and polyester fibers. This proves the synergy of action between the above-mentioned dialkyldimethylammonium chlorides and N, N-di (polyoxyethylene) alkylammonium N-oxides containing 11 oxyethylene groups It should be emphasized that N-oxides of N, N-di (polyoxyethylene) alkylamines containing less than 9 oxyethylene groups and more than 12 oxyethylene groups show a much lower synergistic effect with dialkyl dimethylammonium chlorides in terms of antistatic properties. The maximum synergistic effect was observed in in the case of an amine N-oxide containing 11 oxyethylene groups.

The most preferred compositions of the present invention are: 1.5-4% by weight of dialkyldimethylammonium chlorides and 0.25-1% by weight of N, N-di (polyoxyethylene) alkylamine N-oxides containing 11 oxyethylene groups. The preferred weight ratio of dialkyldimethylamine chlorides to N, N-di (polyoxyethylene) alkylamine N-oxides in the center in view of the stability of the emulsion is 1: 0.025-0.25. A higher proportion of amine N-oxide as compared to dialkyldimethylammonium chlorides is not possible due to the decomposition of the emulsion form of the agent. The specific resistivity of synthetic fiber products rinsed in a solution of the agent of the invention is 5.1 x 10 ^l - 9.5 "10 ⁴ " / cm ".

Example I. An agent was prepared consisting of 1.75% by weight of dialkyldimethylammonium chlorides containing vegetable amine alkyl chains (C16-C18), 0.25% by weight of N, N-di (polyoxyethylene) alkylamines N-oxides also containing a vegetable alkyl chain (C16 -Ci8) and an average of 11 oxyethylene groups and water up to 100% by weight. The liquid was used in the amount of 30 g of the preparation per 4 dm3 of water for rinsing fabric samples from polyester, polyacrylonitrile and polyamide fibers. The dried fabric samples were tested for specific resistance according to PN-71 / P-04602. Polyamide fiber fabric has a specific resistivity of 9.8 χ 10 ΜΩ / ^, polyacrylonitrile fabric fabric 6.3 x 1 (0 ΜΩ / ατΤ, and polyester fabric 7 x 1 (0 ΜΩ / ^. For comparison, for a 2% agent by weight of dialkyldimethylammonium chlorides, using 30 g of this agent per 4 dm3 of water The specific resistances are: for polyamide fiber fabric - 1.3 x 106 Μ Ω / αη2, polyacrylonitrile - 2 x 1θ6 Μ Ω / αη2, polyester - 8 x 1θ4 Μ O / cm. For an agent containing only 2% by weight of N, N-di (polyoxyethylene) alkylamines N-oxides containing a vegetable alkyl chain (C1-C11) and an average of 11 oxyethylene groups, with the use of 30 g / 4 dm3, the specific resistances are respectively: for fabric made of polyamide fibers 0.3 x 104 ΜΩ / ^ 2, polyacrylonitrile - 2 x 1θ4 ΜΩ / cm ² and polyester - 8.3 x 10 ³ Μ Ω / οη. The softening effect for all samples was rated at 3, w on a four-point scale (0-3). The results of specific resistance indicate a significant synergy of p between dialkyldimethylammonium chlorides and N, N-di (polyoxyethylene) ammonium N-oxides in terms of anti-electrostatic properties.

Example II. A composition was prepared consisting of 8 wt% dialkyldimethylammonium chlorides containing a rapeseed alkyl chain (C22), 2 wt% N, N-di (polyoxyethylene) alkylamines N-oxides containing a rapeseed (C22) alkyl chain and 9 oxyethylene groups, 0.1% by weight of perfume and water up to 100% by weight. The measure was evaluated as in Example 1. The fabric of polyamide fibers had a specific resistance of 0.25 x 10 fi / cm, of polyacrylonitrile fibers 5.1 x 110, and the polyester fabric of 9.1 x 1θ1 ΜΩ / αη.

Example ΠΙ. A composition of 1 wt.% Dialkyldimethylammonium chlorides containing a coconut (C12) alkyl chain, 0.1 wt.%

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N, N-di (polyoxyethylene) alkylamines N-oxides containing a coconut (CU) alkyl chain and 12 oxyethylene groups, 0.01% by weight antifoam, 0.1% by weight perfume and water up to 100% by weight. The measure was assessed as in Example 1. The fabric of polyamide fibers had a specific resistance of 8.3 x ΙΟ ^ Μ / / cm, of polyacrylonitrile fibers 4.5 x 10 ⁴ M ^ / cm ² , and the polyester fabric of 9.5 χ 10 ⁴ Μ. / cm ² .

Publishing Department of the UP RP. Circulation of 90 copies

Price: PLN 10,000

Claims (1)

Patent claim Anti-electrostatic softening agent, containing dialkyldimethylammonium chlorides and packaging substances such as fragrances, dispersants, dyes, pH regulators, preservatives, characterized in that it consists of 1-8% by weight of dialkyldimethylammonium chlorides containing 12-22 carbon atoms in the alkyl chains , 0.1-2% by weight of N, N-di (polyoxyethylene) alkylamine N-oxides having 12-22 carbon atoms in the alkyl chain and 9-12 oxyethylene groups, optionally up to 6% by weight of packaging materials and water up to 100% by weight.