中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

10 records (took 0.022 seconds)

    AZOIC DYES INSOLUBLE IN WATER
    4.
    发明专利
    AZOIC DYES INSOLUBLE IN WATER 未知

    公开(公告)号：CA1038862A

    公开(公告)日：1978-09-19

    申请号：CA197858

    申请日：1974-04-19

    Applicant: MONTEDISON SPA

    Inventor： PIERI GIAMPIERO ,  PAFFONI CAMILLO ,  CIPOLLI ROBERTO ,  MANGINI ANGELO ,  TUNDO ANTONIO

    IPC: C09B29/085 ,  C09B29/08 ,  C09B31/047 ,  C09B62/473 ,  C09B29/00 ,  C09B31/02 ,  C09B33/02

    Abstract: Azoic dyes fre of sulphonic groups and having the following general formula: wherein R and R1 are the same or different and each represents hydrogen, a C1-C4 alkyl group, a C1-C4 alkoxyl group, a halogen, a nitro group, a cyano group, a -SO2CH3 group, a sulphamidic group, a -NHCOZ group wherein Z is a C1-C4 alkyl group, or a phenylazo group which may be substituted in the phenyl ring by a C1-C4 ? ?yl group, with the proviso that when one of the radicals R and R1 is a halogen, the other cannot represent a cyano group; R2 is hydrogen or a C1-C4 alkonyl group; R3 and R4 are the same or different and each represents a C1-C4 alkyl group, a C1-C4 cyanalkyl group, a C1-C4 hydroxyalkyl group, a C1-C4 alkoxyalkyl group, a C1-C4 acyloxyalkyl group or a carboxyester group having a C1-C4 aliphatic chain; X is a linear or branched aliphatic or cycloaliphatic chain containing from 1 to 6 carbon atoms, which may be saturated or contain a double bond; and n is 1 or 2. These dyes show a high dyeing power for fibers of cellulosic esters and ethers, for synthetic polyamidic fibers and for fibers derived from terephthalic esters; moreover, they have a high resistance to wet treatments and a remarkable quality especially for materials such as polyamidic fibers, for which it is hard to find dyes that will simultaneously satisfy the requirement of covering up the roller streaks due to irregularities in the fiber itself.

Patent Agency Ranking