CH141788A - Process for the preparation of a tanning agent. - Google Patents

Process for the preparation of a tanning agent.

Info

Publication number
CH141788A
CH141788A CH141788DA CH141788A CH 141788 A CH141788 A CH 141788A CH 141788D A CH141788D A CH 141788DA CH 141788 A CH141788 A CH 141788A
Authority
CH
Switzerland
Prior art keywords
preparation
tanning agent
acetic acid
chloromethylene
acid
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH141788A publication Critical patent/CH141788A/en
Priority claimed from US119335A external-priority patent/US2515093A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/28—Blow-moulding apparatus
    • B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
    • B29C49/36—Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/56—Opening, closing or clamping means
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/08—Chemical tanning by organic agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Description

  

      Verfahren    zur Darstellung eines Gerbstoffes.    Es ist bis dahin nicht bekannt gewesen,  dass     ,Q-Chlormethylensalicylsäuren,        bezw.     deren Derivate und     Substitutionsprodukte,     mit den Salzen von     Naphtalinmonosulfo-          säuren    zu Verbindungen zusammentreten,  die als Gerbstoffe von besonderer Bedeu  tung sind.  



  Das den Gegenstand des vorliegenden       Zusatzpatentes    bildende Verfahren ist da  durch gekennzeichnet, dass. die     P-Chlor-          nietliylensalicylsäure    der Formel  
EMI0001.0010     
    in     essigsaurer        Suspension    mit     naphtalin-ss-          sulfosaurem    Natrium kondensiert wird.  



  Das Produkt hat in schwach saurer Lö  sung     stark.    leimfällende Eigenschaften und  verwandelt die tierische     Blösse    in ein wei  sses Leder.  



  <I>Beispiel</I>  184 Teile     S2-Chlormethylensalicylsäure,     600 Teile     80%ige        Essigsäure,    230 Teile       ia-naphthalinsulfosaures    Natrium (möglichst    rein und eisenfrei) werden 5     Stunden    am       R.ückflusskühler    gekocht, dann in Eiswasser  gegossen, das Kondensationsprodukt mit  Sole vollständig gefällt und mit Salzwasser  salzsäurefrei gewaschen. Der etwas klebrige  Rückstand wird mit Hilfe von Natrium  acetat in wenig Wasser gelöst, mit Essig  säure versetzt und ist als Gerbstoff ohne  weiteres verwendbar.



      Process for the preparation of a tanning agent. It was not previously known that, Q-chloromethylene salicylic acids, respectively. Their derivatives and substitution products combine with the salts of naphthalene monosulphonic acids to form compounds which are of particular importance as tannins.



  The process forming the subject of the present additional patent is characterized in that the P-chloro-niethylensalicylic acid of the formula
EMI0001.0010
    is condensed in acetic acid suspension with naphthalene-β-sulfonic acid sodium.



  The product was strong in weakly acidic solution. glue-precipitating properties and transforms the animal nakedness into a white leather.



  <I> Example </I> 184 parts of S2-chloromethylene salicylic acid, 600 parts of 80% acetic acid, 230 parts of ia-naphthalenesulfonate sodium (as pure and iron-free as possible) are boiled for 5 hours on a reflux condenser, then poured into ice water, the condensation product with Brine completely precipitated and washed free of hydrochloric acid with salt water. The somewhat sticky residue is dissolved in a little water with the aid of sodium acetate, acetic acid is added and it can be used as a tanning agent.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Gerb stoffes, dadurch gekennzeichnet, dass die -Q-Chlormethylensalicylsäure der Formel EMI0001.0024 in essigsaurer Suspension mit naphtalin-ss- sulfosaurem Natrium kondensiert wird. Das Produkt hat in schwach saurer Lö sung stark leimfällende Eigenschaften und verwandelt die tierische Blösse in ein wert volles Leder. PATENT CLAIM: Process for the preparation of a tanning material, characterized in that the -Q-chloromethylene salicylic acid of the formula EMI0001.0024 is condensed in acetic acid suspension with naphthalene-β-sulfonic acid sodium. In a weakly acidic solution, the product has strong glue-precipitating properties and transforms animal nakedness into valuable leather.
CH141788D 1949-10-03 1928-07-30 Process for the preparation of a tanning agent. CH141788A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US119335A US2515093A (en) 1949-03-23 1949-10-03 Machine for making hollow articles

Publications (1)

Publication Number Publication Date
CH141788A true CH141788A (en) 1930-08-15

Family

ID=38464588

Family Applications (2)

Application Number Title Priority Date Filing Date
CH141788D CH141788A (en) 1949-10-03 1928-07-30 Process for the preparation of a tanning agent.
CH138884D CH138884A (en) 1949-10-03 1928-07-30 Process for the preparation of a tanning agent.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH138884D CH138884A (en) 1949-10-03 1928-07-30 Process for the preparation of a tanning agent.

Country Status (5)

Country Link
BE (1) BE496029A (en)
CH (2) CH141788A (en)
ES (1) ES194433A1 (en)
GB (1) GB684863A (en)
IT (1) IT465487A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107932879B (en) * 2017-12-22 2024-03-26 德玛克（长兴）注塑系统有限公司 Rotary bottle blowing machine

Also Published As

Publication number Publication date
IT465487A (en)
CH138884A (en) 1930-03-31
BE496029A (en)
ES194433A1 (en) 1951-10-16
GB684863A (en) 1952-12-24

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