US2432056A - Process for carroting fur for felting - Google Patents

Process for carroting fur for felting Download PDF

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Publication number
US2432056A
US2432056A US416534A US41653441A US2432056A US 2432056 A US2432056 A US 2432056A US 416534 A US416534 A US 416534A US 41653441 A US41653441 A US 41653441A US 2432056 A US2432056 A US 2432056A
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Prior art keywords
fur
felting
carroting
fibres
solution
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US416534A
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Weissman Milton
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A PAPISH Inc
PAPISH Inc A
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PAPISH Inc A
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
    • D04H1/08—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres and hardened by felting; Felts or felted products

Definitions

  • the present invention relates to the processing of fur fibres preliminary to the felting operation thereof and it has for its object a process which will avoid the use of mercury nitrate which is customarily used with nitric acid in aqueous medium, and which employs a reagent combination inexpensive and certain in its action.
  • the carroting process is usually accomplished by brushing the chemical carroting solution into the fur fibres while they are attached to the pelt.
  • the carroted fur may be used with entire safety without any toxic effect. There is no discoloration of the fur so that white and light shades of ,fur fibres remain unchanged as to shade. Quick starting is a characteristic of 'my process and thus the felting operation is rapidly produced and manufacturing costs lowered.
  • a process for carroting fur for felting which consists in treating such fur fibres with a solu-- tion containing a sodium salt of condensed dinaphthyl-methane-disulfonic acid, a hydrolizing agent and an oxidizing agent.
  • a process for carroting fur for felting which consists in treating such fur fibres with a solution containing a sodium salt of condensed dinaphthyl-methane-disulfonic acid, nitric acid and hydrogen peroxide.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Description

Patented "Dec. 2, 1947 1 3;
PRooEssroaoAimoTmG FUR FOR VFIFELTING Milton Weissman, Rego Park, N. Y., assignor to A. Papish, Inc., Danbury, Conn.-, a'corporation of Connecticut No Drawing.
3 Claims.
The present invention relates to the processing of fur fibres preliminary to the felting operation thereof and it has for its object a process which will avoid the use of mercury nitrate which is customarily used with nitric acid in aqueous medium, and which employs a reagent combination inexpensive and certain in its action.
About the year 1725 the discovery was made that if, before removal from the pelt, the fur be brushed with a dilute solution of nitric acid and mercuric nitrate, very satisfactory felting properties are imparted to the fur. It, is a treatment which has continued in use until the present day.
The most objectionable feature of the mercury carroting process is that it is highly toxic to the operating personnel engaged in the batting industry. Therefore, a great deal of effort has been expended in an effort to discover a successful non-mercuric carrot.
The carroting process is usually accomplished by brushing the chemical carroting solution into the fur fibres while they are attached to the pelt.
- Other alternative methods sometimes used are either spraying the fibres or total immersion thereof in the chemical solution; then the fur fibres are dried and subsequently removed from the pelt. Thereupon they are ready for the felting operation. In practice, however, carroted fur is generally stored for substantial periods of time before being utilized in the felting operations.
There are several non-mercuric carroting processes known today. However, the fact remains that mercury carrot is still preponderantly used Application October 25, Serial No. 416,534
in hat manufacture. The reason for this is that In the art various other acid hydrolyzing agents, including hydrochloric or sulfuric acid, and mixtures thereof, have been proposed and may be used in substitution of the nitric acid, when desired, and various substitutions for peroxide of hydrogen set forth in the art may likewise be employed, if desired.
Because of the different properties of the various types of fur fibres suitable for felting operations and because of the variations possible in 2 the dryin conditions, those versed in the carroting art know that for any iven set of operating conditions the proportions of the carroting solution can best be determined by test upon the particular fur fibres to be treated. It therefore is understood that the example is illustrative and that the proportions may vary in accordance with particular conditions. The solution .may be combed into the furwhile it is still on the pelts and after drying the 'fur maybe cut' from'the pelts and used in the felting operation or-aged by storing. Ihave found that the felting characteristic of the fur treated in accordance with my process is substantially improved. The carroted fur may be used with entire safety without any toxic effect. There is no discoloration of the fur so that white and light shades of ,fur fibres remain unchanged as to shade. Quick starting is a characteristic of 'my process and thus the felting operation is rapidly produced and manufacturing costs lowered.
Having described my invention, whatI claim and desire to secure by Letters Patent is as follows:
1. A process for carroting fur for felting which consists in treating such fur fibres with a solu-- tion containing a sodium salt of condensed dinaphthyl-methane-disulfonic acid, a hydrolizing agent and an oxidizing agent.
2. A process for carroting fur for felting which consists in treating such fur fibres with a solution containing a sodium salt of condensed dinaphthyl-methane-disulfonic acid, nitric acid and hydrogen peroxide.
3.- A process for carroting fur for felting which consists in treating such fur fibres with a solution containing:
Per cent (approximately) A sodium salt of dinaphthyl-methane-disulfonic acid 2 Nitric acid 5 Hydrogen peroxide 2 Water 91 MILTON WEISSMAN.
REFERENCES CITED The following references are of record in the file of this patent:
. UNITED STATES PATENTS,
3 4 Numbeni- Name Date 1,955,678; Mercier' ,Apr. 17:, 1934 QTH'ER REFERENGES' 2,179,371 Dyer Nov. 7, 1939 Weidlein, Progress, News Edition of Indus- 2,029,322 Jaeger Feb. 4, 1 3 trial and Engineering Chemistry, April 20, 1932,
FOREIGN PATENT Page S Beal etall, "Elimination of Mercury Hazard," Number Country Date News Edition, American Chemical 800., Nov. 25,
250,453 Germany awn-"S pt. 6; 1912 941, page;1234- 457,057 Germany Mar. 7 1-923-
US416534A 1941-10-25 1941-10-25 Process for carroting fur for felting Expired - Lifetime US2432056A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089478A (en) * 1961-04-17 1963-05-14 Jefferson F Jones Miter table for use with masonry saw
US6990983B1 (en) 2005-05-24 2006-01-31 Lyman Jr Hugh Marion Disposable foldable cup holder ashtray

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE250453C (en) *
US1616103A (en) * 1927-02-01 James hill
DE457057C (en) * 1925-09-18 1928-03-07 I G Farbenindustrie Akt Ges Method for fulling textile fabrics
US1686836A (en) * 1923-07-10 1928-10-09 Chem Fab Pott & Co Treating and wetting out fibrous material
US1696199A (en) * 1925-11-21 1928-12-25 Ig Farbenindustrie Ag Aromatic sulphonic acid
US1722904A (en) * 1928-01-18 1929-07-30 Rohm & Haas Condensed aromatic sulphonic acids and process of making same
US1778473A (en) * 1925-04-09 1930-10-14 Ig Farbenindustrie Ag Process for preparing hair to be worked into felt
US1885887A (en) * 1930-07-16 1932-11-01 Mellon Inst Of Ind Res Method of carroting fur
US1955678A (en) * 1931-03-28 1934-04-17 American Hatters And Furriers Fur treating composition and process
US2029322A (en) * 1934-03-12 1936-02-04 American Cyanamid & Chem Corp Synthetic tanning material
US2126232A (en) * 1936-02-21 1938-08-09 Ig Farbenindustrie Ag Diaryl methane water-soluble condensation products
US2169997A (en) * 1938-11-08 1939-08-22 Non Mercuric Carrot Company Process of carroting fur and the like and composition therefor
US2179371A (en) * 1936-05-29 1939-11-07 Monsanto Chemicals Dyeing textile materials

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616103A (en) * 1927-02-01 James hill
DE250453C (en) *
US1686836A (en) * 1923-07-10 1928-10-09 Chem Fab Pott & Co Treating and wetting out fibrous material
US1778473A (en) * 1925-04-09 1930-10-14 Ig Farbenindustrie Ag Process for preparing hair to be worked into felt
DE457057C (en) * 1925-09-18 1928-03-07 I G Farbenindustrie Akt Ges Method for fulling textile fabrics
US1696199A (en) * 1925-11-21 1928-12-25 Ig Farbenindustrie Ag Aromatic sulphonic acid
US1722904A (en) * 1928-01-18 1929-07-30 Rohm & Haas Condensed aromatic sulphonic acids and process of making same
US1885887A (en) * 1930-07-16 1932-11-01 Mellon Inst Of Ind Res Method of carroting fur
US1955678A (en) * 1931-03-28 1934-04-17 American Hatters And Furriers Fur treating composition and process
US2029322A (en) * 1934-03-12 1936-02-04 American Cyanamid & Chem Corp Synthetic tanning material
US2126232A (en) * 1936-02-21 1938-08-09 Ig Farbenindustrie Ag Diaryl methane water-soluble condensation products
US2179371A (en) * 1936-05-29 1939-11-07 Monsanto Chemicals Dyeing textile materials
US2169997A (en) * 1938-11-08 1939-08-22 Non Mercuric Carrot Company Process of carroting fur and the like and composition therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089478A (en) * 1961-04-17 1963-05-14 Jefferson F Jones Miter table for use with masonry saw
US6990983B1 (en) 2005-05-24 2006-01-31 Lyman Jr Hugh Marion Disposable foldable cup holder ashtray

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