Quaternary ammonium alkyl phosphates and method for producing same
AssigneeTakemoto Yushi Kabushiki Kaisha
InventorsMasatsugu Saiki, Yoshio Imai, Makoto Takagi
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Abstract
Antistatic agents for synthetic fibers comprising a specific type of quaternary ammonium alkyl phosphate as principal constituent and 1 weight percent or less of by-product alkali metal halides have improved antistatic characteristics both in high and low humidity conditions and reduce the amount of deposits that fall off, yellowing by a heat treatment and generation of rust. Methods of producing such antistatic agents are also disclosed.
Claims2
In an antistatic agent for synthetic fibers comprising quaternary ammonium alkyl phosphate which is shown by the formula (I) below as principal consitutent and by-product alkali metal halides;
- ##STR11## where R.sup.1 and R.sup.3 are alkyl group or alkenyl group with 8-18 carbon atoms, R.sup.2 is alkyl group with 1-3 carbon atoms, R.sup.4 is hydrogen or alkyl group or alkenyl group with 8-18 carbon atoms, X is alkyl group with 1-3 carbon atoms or a group shown by --(AO).sub.q H, Y is alkyl group with 1-3 carbon atoms or a group shown by --(A'O).sub.r H, AO and A'O are respectively the same as OA and OA' in the formula (I), q and r are integers in the range of 2-40 such that q+r=4-42, OA and OA' are single oxyethylene or oxypropylene group or block or random connected mixture thereof, and l and m are 0 or integers in the range of 1-20 such that l+m=0-20, the improvement wherein said by-product alkali metal halides are contained by 1 weight percent or less with respect to said quaternary ammonium alkyl phosphate.
A method of producing an antistatic agent for synthetic fibers comprising the steps of
- quaternalizing tertiary amine shown by the formula (1) by using alkyl halide with 1-3 carbon atoms,
- subsequently using alkali metal alcoholate to exchange halogen anions in anion section for alkoxy anions,
- separating alkali metal halide generated as a by-product, and
- subsequently exchanging said alcoxy anions by using mono- or di-alkyl phosphate shown by the formula (2) to thereby obtain quaternary ammonium alkyl phosphate which is shown by the formula (I) and contains 1 wt% or less of said by-product alkali metal halide, said quaternary ammonium alkyl phosphate serving as principal constituent of an antistatic agent for synthetic fibers:
- ##STR12## where R.sup.1 and R.sup.3 are alkyl group or alkenyl group with 8-18 carbon atoms, R.sup.2 is alkyl group with 1-3 carbon atoms, R.sup.4 is hydrogen or alkyl group or alkenyl group with 8-18 carbon atoms, X is alkyl group with 1-3 carbon atoms or a group shown by --(AO).sub.q H, Y is alkyl group with 1-3 carbon atoms or a group shown by --(A'O).sub.r H, AO and A'O are respectively the same as OA and OA' in the formula (I), q and r are integers in the range of 2-40 such that q+r=4-42, OA and OA' are single oxyethylene or oxypropylene group or block or random connected mixture thereof, and l and m are 0 or integers in the range of 1-20 such that l+m=0-20.
Dependencies are inferred from the claim text.