Agents for inhibiting the corrosion of iron in acid solution
    1.
    发明授权
    Agents for inhibiting the corrosion of iron in acid solution 失效
    用于抑制酸溶液腐蚀的试剂

    公开(公告)号:US3773675A

    公开(公告)日:1973-11-20

    申请号:US3773675D

    申请日:1971-12-21

    Applicant: HOECHST AG

    Inventor: HEISS L HILLE M

    CPC classification number: C23G1/06 C07C381/12

    Abstract: IN WHICH N MEANS AN INTEGER OF 1 TO 30 AND M STANDS FOR 0 OR 1 AND WHEREIN, IF N IS AT LEAST 3, IN THIS FORMULA II an amount of up to one third of the radicals which are enclosed by the bracket () can be replaced by radicals of the formula
    Corrosion inhibiting agents having the formula

    IN WHICH R1 stands for an alkyl radical having 4 to 18 carbon atoms and bound in the 6-, 4- or 2-position to the benzene nucleus, R2 stands for hydrogen, an alkyl radical having up to 9 carbon atoms, or a radical of the formula

    A stands for one of the anions Cl( ), Br( ), I( ), Ch3OSO3( ) and 1/2 SO4 ( )( ) in a quantity which is equivalent to the number of the positively charged sulfur atoms in the total molecule of the formula I, and X stands for a lower alkyl radical, the radical -C2H4OH or a radical of the formula

    2.
    发明专利
    未知

    公开(公告)号:DK404180A

    公开(公告)日:1981-03-26

    申请号:DK404180

    申请日:1980-09-24

    Applicant: HOECHST AG

    Abstract: Polyether polyamines of the formula 1 in which R1 and R2 are identical or different and denote C8-C30-alkyl, -2-hydroxyalkyl or -alkenyl or C8-C24-alkoxypropyl, m and n are 2 or 3, R3 is hydrogen or methyl and the sum of o+p+q+r is an integer from 4 to 600, process for their manufacture and their use as dispersing agents, corrosion inhibitors, demulsifiers and acid retarders.

    6.
    发明专利
    未知

    公开(公告)号:BR7505898A

    公开(公告)日:1976-08-03

    申请号:BR7505898

    申请日:1975-09-12

    Applicant: HOECHST AG

    Abstract: An aqueous clay base mud for deep drilling containing as a protective colloid a copolymer which is constituted by the formula I, II and III I, II, III IN WHICH R1 and R2 each is hydrogen of -CH3; R3 is -CO-NH2, -CN or COOCH3; R4 is hydrogen, -CH3 or -C2H5; R5 is -CH3 or -C2H5 or R4 and R5 together represent a propylene group forming a pyrrolidone radical with the inclusion of the radical Me is ammonium, potassium, sodium or lithium and x is 5 to 50, y 25 to 92 and z 3 to 70, OR BY THE SAPONIFICATION PRODUCTS THEREOF AND WHICH CONTAINS THE COMPONENTS IN THE PARTS BY WEIGHT OF THE STARTING MONOMERS INDICATED BY THE INDICES X, Y AND Z.

    8.
    发明专利
    未知

    公开(公告)号:BR8006137A

    公开(公告)日:1981-04-07

    申请号:BR8006137

    申请日:1980-09-25

    Applicant: HOECHST AG

    Abstract: Polyether polyamines of the formula 1 in which R1 and R2 are identical or different and denote C8-C30-alkyl, -2-hydroxyalkyl or -alkenyl or C8-C24-alkoxypropyl, m and n are 2 or 3, R3 is hydrogen or methyl and the sum of o+p+q+r is an integer from 4 to 600, process for their manufacture and their use as dispersing agents, corrosion inhibitors, demulsifiers and acid retarders.

    9.
    发明专利
    未知

    公开(公告)号:BR7908320A

    公开(公告)日:1980-09-23

    申请号:BR7908320

    申请日:1979-12-19

    Applicant: HOECHST AG

    Inventor: HILLE M BOHM R

    Abstract: Use of surface-active neutral salts of sulfonic acids of the formula I (I) wherein A stands for a saturated aliphatic hydrocarbon radical or an aliphatic hydrocarbon radical having one olefinic double bond each having 3 carbon atoms, or a mononuclear or binuclear aromatic radical, especially phenyl or naphthyl, C6H2 or C10H4, R1 stands for alkyl or alkenyl having from 1 to 21 carbon atoms, especially 1 to 18 carbon atoms and R2 and R3 each stand for hydrogen or alkyl having from 1 to 4 carbon atoms, and of oxethylated aliphatic amines of the formula II (II) wherein R' stands for a saturated aliphatic hydrocarbon radical or an aliphatic hydrocarbon radical having one or two olefinic double bonds each radical having from 8 to 25, preferably 10 to 2, carbon atoms, z stands for 0 or 1 and m, n and x each stand for integers of from 0 to 20, the sum of m, n and X amounting to an integer of from 2 to 40, as demulsifiers for the demulsification of water-containing crude oil and oil sludge emulsions.

    10.
    发明专利
    未知

    公开(公告)号:DE2444108C2

    公开(公告)日:1978-01-19

    申请号:DE2444108

    申请日:1974-09-14

    Applicant: HOECHST AG

    Abstract: An aqueous clay base mud for deep drilling containing as a protective colloid a copolymer which is constituted by the formula I, II and III I, II, III IN WHICH R1 and R2 each is hydrogen of -CH3; R3 is -CO-NH2, -CN or COOCH3; R4 is hydrogen, -CH3 or -C2H5; R5 is -CH3 or -C2H5 or R4 and R5 together represent a propylene group forming a pyrrolidone radical with the inclusion of the radical Me is ammonium, potassium, sodium or lithium and x is 5 to 50, y 25 to 92 and z 3 to 70, OR BY THE SAPONIFICATION PRODUCTS THEREOF AND WHICH CONTAINS THE COMPONENTS IN THE PARTS BY WEIGHT OF THE STARTING MONOMERS INDICATED BY THE INDICES X, Y AND Z.

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