US867167A - Bleaching glue. - Google Patents

Bleaching glue. Download PDF

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Publication number
US867167A
US867167A US37887407A US1907378874A US867167A US 867167 A US867167 A US 867167A US 37887407 A US37887407 A US 37887407A US 1907378874 A US1907378874 A US 1907378874A US 867167 A US867167 A US 867167A
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US
United States
Prior art keywords
glue
bleaching
formaldehyde sulfoxylate
bleaching glue
zinc
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US37887407A
Inventor
Armand Julius Stiegelmann
Erich Dehnel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to US37887407A priority Critical patent/US867167A/en
Application granted granted Critical
Publication of US867167A publication Critical patent/US867167A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
    • G03C1/047—Proteins, e.g. gelatine derivatives; Hydrolysis or extraction products of proteins

Definitions

  • glue can .be satisfactorily blcachedby treatment with zinc formaldehyde sulfoxylate.
  • 011/ invention we may make use eithenof the so-called basic zinc formaldehyde sulfoxylate described and claimed in the specification of Letters Patent No. 812,124, or of. neutral zinc formaldehyde sulfoxylate.
  • the bleaching can be carried out by heating a solution of the glue with either of the said our invention may be carried out for example as foll0 ws but it is not confined to this example. Add to a solution containing glue, at-a temperature of about one hundred (100) degrees Centigrade, and while stirring,
  • a solution of about four (4) parts of the neutral vine formaldehyde sulloxylate can be employed instead of the thin paste of two parts of the basic zinc salt.
  • an acid for instance acetic acid, formic acid, or sulfuric acid

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

UNITED sTArss r a rENfT OFFICE.
ARMAND JULIUS S'lTIl'lGELlWA NN AND ERICII DETINEL, Ol LUDWlGSliAl EN-ON-TIIE-RIIINE, GERMANY, ASSIGNORS T BADI'SCIIE ANlLlN & SODA l ABltlK. 0h LUDWlGSllAFEN-ON- TIIILRTII'NE, GERMANY, A CORPORATION.
BLEACHING G-LUE.
Specification of Letters Patent.
Application filed Julie 13,1907. Serial No 378,874.
Patented Sept. 24, 1907.
To all whom it may concern:
Be it known that we, ARMAND J ULIUs STIEGELMANN and Enron DEHNEL, doctors of philosophy and cheniists, subjects of the German Emperor, residing at Ludwigshai'en-on-the-Rhine, Germany, have invented new and useful Improyemonts in Bleaching Glue, of which the following is a specification.
We have discovered that glue can .be satisfactorily blcachedby treatment with zinc formaldehyde sulfoxylate. In carrying out 011/ invention we may make use eithenof the so-called basic zinc formaldehyde sulfoxylate described and claimed in the specification of Letters Patent No. 812,124, or of. neutral zinc formaldehyde sulfoxylate. The bleaching can be carried out by heating a solution of the glue with either of the said our invention may be carried out for example as foll0 ws but it is not confined to this example. Add to a solution containing glue, at-a temperature of about one hundred (100) degrees Centigrade, and while stirring,
a thin paste of basiczinc formaldehyde sulfoxylate, using about two (2) parts by weight thereof for every thousand (1,000) parts by weight of the finished glue. The bleaching is effected in a few minutes, and'tbe product can be worked up as usual. In this example,
instead of the thin paste of two parts of the basic zinc salt, a solution of about four (4) parts of the neutral vine formaldehyde sulloxylate can be employed. Ii desired, an acid (for instance acetic acid, formic acid, or sulfuric acid) may be added either to the mixture or to the glue solution, before the addition of the zinc salts.
Now what we claim is: 1. The process of bleaching glue which consists in treating the glue with zinc formaldehyde sulfoxylate in the presence of water. 40
2. The process of bleaching glue which consists in treating the glue with basic zinc formaldehyde sulfoxylate in the presence of water.
3. The process of bleaching glue which consists in treating the glue with basic zine formaldehyde sulfoxylate in the presence of water and acid.
In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.
ARMAND JULIUS SYIPIEGELMANN. ERICH DFJHNEL. Witnesses l hmns'r F. Enmmnnr, 1. Anne. Tmorn.
US37887407A 1907-06-13 1907-06-13 Bleaching glue. Expired - Lifetime US867167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US37887407A US867167A (en) 1907-06-13 1907-06-13 Bleaching glue.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37887407A US867167A (en) 1907-06-13 1907-06-13 Bleaching glue.

Publications (1)

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US867167A true US867167A (en) 1907-09-24

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Family Applications (1)

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US37887407A Expired - Lifetime US867167A (en) 1907-06-13 1907-06-13 Bleaching glue.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476758A (en) * 1945-04-23 1949-07-19 Messrs Hornflowa Ltd Process for preparing a bleached keratin meal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476758A (en) * 1945-04-23 1949-07-19 Messrs Hornflowa Ltd Process for preparing a bleached keratin meal

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