LOW CORROSION ALKANE SULFONIC ACIDS FOR CONDENSATION REACTIONS

    公开(公告)号:US20190301027A1

    公开(公告)日:2019-10-03

    申请号:US16318146

    申请日:2017-07-10

    Applicant: BASF SE

    Abstract: The present invention relates to methods for adding an aqueous solution of alkane sulfonic acids to a reactor via a pipe or container, wherein a condensation reaction takes place after addition of the aqueous solution of alkane sulfonic acid and to methods for reducing or limiting corrosion by adding said aqueous solution to a reactor. The present invention also relates to the use of aqueous solutions of alkane sulfonic acids in the reduction or limitation of corrosion and to the use of such aqueous solutions in condensation reactions.

    MICRO-PARTICULATE ORGANIC UV ABSORBER COMPOSITION

    公开(公告)号:US20190274939A1

    公开(公告)日:2019-09-12

    申请号:US16302466

    申请日:2017-05-19

    Applicant: BASF SE

    Abstract: Disclosed are aqueous dispersions (A), comprising a micronized organic UV filter (a) selected from (a1) the micronized compound of formula (1), wherein R1 and R2 independently from each other are C1-C20alkyl; C2-C20alkenyl; C3-C10ocycloalkyl; C3-C10cycloalkenyl; or R1 and R2 together with the linking nitrogen atom form a 5- or 6-membered heterocyclic ring; A is —N(R3)—; —O—; or the direct bond; B is a bivalent radical selected from alkylene, cycloalkylene alkenylene or phenylene radical which is optionally substituted by a carbonyl- or carboxy group; a radical of formula *—CH2—C≡═C—CH2—; or the divalent radical *-B-* corresponds to the formula (1a), wherein n1 is a number from 1 to 3; A is —N(R3)—; or —O—; and R3 is hydrogen; C1-C5alkyl; or hydroxy-C1-C5alkyl; (a2) the micronized compound of formula (2), wherein T1 is hydrogen; C1-C12alkyl; preferably iso-octyl, or C1-C4alkyl substituted by phenyl; (a3) the micronized compound of formula (3a); wherein R4 and R5 independently from each other are hydrogen; C1-C18alkyl; or C6-C12acryl; R6, R7 and R8 independently from each other, are hydrogen; C1-C18alkyl; or a radical of formula (3b); wherein R9, R10 and R11 independently from each other, are hydrogen; or C1-C18alkyl; (a4) the micronized compound of formula (4); wherein R12 and R13, independently from each other, represent hydrogen; halogen; C1-C12alkyl: C1-C18hydroxy; C1-C18alkoxy; poly(ethoxy)-alkoxy with a C1-C4 alkyl fragment and an ethoxy number ranging from 1 to 4; C1-C4mono- or dialkyl amino, R14 represents halogen; hydroxy; amino; phenyl which is optionally substituted 1 to 3 times by a hydroxy radical situated at least in a para or phenyl position, possibly 1 to 3 times substituted in an ortho, meta or para position by a C1-C12alkoxy or cyano or C1-C7alkyl-amino group; and (b) a vinylpyrrolidone copolymer or homopolymer.

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