GB986637A - Black organic fibres and fabrics and processes for making them from regenerated cellulose - Google Patents
Black organic fibres and fabrics and processes for making them from regenerated celluloseInfo
- Publication number
- GB986637A GB986637A GB1259061A GB1259061A GB986637A GB 986637 A GB986637 A GB 986637A GB 1259061 A GB1259061 A GB 1259061A GB 1259061 A GB1259061 A GB 1259061A GB 986637 A GB986637 A GB 986637A
- Authority
- GB
- United Kingdom
- Prior art keywords
- salts
- ammonium
- phosphate
- salt
- product
- 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
Links
- 239000004744 fabric Substances 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 3
- 239000004627 regenerated cellulose Substances 0.000 title abstract 3
- 150000003839 salts Chemical class 0.000 abstract 10
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 abstract 6
- 229940116349 dibasic ammonium phosphate Drugs 0.000 abstract 6
- 239000000835 fiber Substances 0.000 abstract 6
- 239000000463 material Substances 0.000 abstract 6
- 239000000203 mixture Chemical class 0.000 abstract 6
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract 6
- 239000002253 acid Substances 0.000 abstract 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 4
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 abstract 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 4
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract 4
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 abstract 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 abstract 4
- 150000003947 ethylamines Chemical class 0.000 abstract 4
- 238000010438 heat treatment Methods 0.000 abstract 4
- 239000000243 solution Substances 0.000 abstract 4
- 239000007858 starting material Substances 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 239000002184 metal Substances 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 230000009466 transformation Effects 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical class [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 2
- GEHMBYLTCISYNY-UHFFFAOYSA-N Ammonium sulfamate Chemical compound [NH4+].NS([O-])(=O)=O GEHMBYLTCISYNY-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 229920003043 Cellulose fiber Polymers 0.000 abstract 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical class OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 abstract 2
- 150000007513 acids Chemical class 0.000 abstract 2
- 150000001412 amines Chemical class 0.000 abstract 2
- 235000019270 ammonium chloride Nutrition 0.000 abstract 2
- 150000003863 ammonium salts Chemical class 0.000 abstract 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 abstract 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 abstract 2
- 239000001166 ammonium sulphate Substances 0.000 abstract 2
- 235000011130 ammonium sulphate Nutrition 0.000 abstract 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 2
- 239000004327 boric acid Substances 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 abstract 2
- 239000002657 fibrous material Substances 0.000 abstract 2
- 238000004079 fireproofing Methods 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 238000005470 impregnation Methods 0.000 abstract 2
- 150000003956 methylamines Chemical group 0.000 abstract 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N mono-methylamine Natural products NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 abstract 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract 2
- -1 nitrogenous phosphate salt Chemical class 0.000 abstract 2
- 235000011007 phosphoric acid Nutrition 0.000 abstract 2
- 150000003016 phosphoric acids Chemical class 0.000 abstract 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 abstract 2
- 239000012266 salt solution Substances 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 abstract 2
- 241000288673 Chiroptera Species 0.000 abstract 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 abstract 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 abstract 1
- 238000002679 ablation Methods 0.000 abstract 1
- 239000002390 adhesive tape Substances 0.000 abstract 1
- 239000010425 asbestos Substances 0.000 abstract 1
- 230000004888 barrier function Effects 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 239000011151 fibre-reinforced plastic Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 230000009970 fire resistant effect Effects 0.000 abstract 1
- 244000144992 flock Species 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 229910052895 riebeckite Inorganic materials 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 abstract 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/0076—Dyeing with mineral dye
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/13—Ammonium halides or halides of elements of Groups 1 or 11 of the Periodic Table
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
- D06M11/56—Sulfates or thiosulfates other than of elements of Groups 3 or 13 of the Periodic Table
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
- D06M11/66—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with sulfamic acid or its salts
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
- D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
- D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts
- D06M11/71—Salts of phosphoric acids
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/80—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides
- D06M11/82—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides with boron oxides; with boric, meta- or perboric acids or their salts, e.g. with borax
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
- D06M13/236—Esters of carboxylic acids; Esters of carbonic acid containing halogen atoms
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/325—Amines
- D06M13/328—Amines the amino group being bound to an acyclic or cycloaliphatic carbon atom
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/325—Amines
- D06M13/332—Di- or polyamines
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/325—Amines
- D06M13/335—Amines having an amino group bound to a carbon atom of a six-membered aromatic ring
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/325—Amines
- D06M13/338—Organic hydrazines; Hydrazinium compounds
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/325—Amines
- D06M13/342—Amino-carboxylic acids; Betaines; Aminosulfonic acids; Sulfo-betaines
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/35—Heterocyclic compounds
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/402—Amides imides, sulfamic acids
- D06M13/432—Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/402—Amides imides, sulfamic acids
- D06M13/438—Sulfonamides ; Sulfamic acids
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Fireproofing Substances (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Black, inert, heat-resistant, non-carbonized organic fibres and fabrics are made by a controlled thermochemical transformation of corresponding fibrous regenerated cellulose fibre, fabric, yarn or tow starting material without loss of fibre identity by impregnating the fibres of the starting material with a water-soluble salt of a strong acid and a nitrogenous base sufficient to bring about the transformation and heating the salt-impregnated material in a dry state at a temperature of 450-600 DEG F. until it has passed beyond the point of lowest fibre strength and has regained a tensile strength equal to at least 20% of the original fibre strength. The fibrous material may be held under tension during processing. A nitrogenous phosphate salt may be used for the impregnation. Salts suitable include amine and ammonium salts of strong acids, provided these have a solubility of at least 10% in water; e.g. salts of ammonium, mono-, di-, and tri-methyl- and ethyl-amines, hydrazine, aniline, morpholine, pyridine and ethylene diamine with sulphamic, sulphuric, phosphoric, hydrochloric, hydrofluoric, tri-chloroacetic and tri-fluoroacetic acids; ammonium sulphate and sulphamate, dibasic ammonium phosphate, ammonium chloride, and methyl- and ethyl-amine salts of phosphoric acids, and mixtures thereof, are preferred, 10-30% solutions being preferably used to give a salt pick-up of 5-20% on the dry basis. Hot solutions may be used, e.g. at 140 DEG F. A mixture which may be used consists of 10% ammonium sulphamate, 4% dibasic ammonium phosphate, 2% dicyandiamide, 4% boric acid and 80% water. In a preferred method, the impregnated material is heated for 5-30 mins. at 550-500 DEG F., conditions being so controlled as to produce a product having a tensile strength of at least 40% of the original tensile strength. The black product is thereafter washed to remove soluble residues. The material may be impregnated with a phosphate salt and so treated as to yield a flexible flame-resistant product which is free from after-glow on intense heating and has a chemical composition comprising 54-61% carbon, 3.4-4.0% hydrogen and 3.1-5.8% nitrogen. Phosphate salts are preferred owing to the flame- and fire-proofing thereby imparted and the freedom from glow or after-glow of the finished product when subjected to intense heat or flame. Alternatively, where other salts are used for the treatment, the black product may be impregnated with a phosphate salt solution, e.g. 10% aqueous dibasic ammonium phosphate and dried.ALSO:Black, inert, heat-resistant, non-carbonised organic fibres and fabrics are made by a controlled thermochemical transformation of corresponding fibrous regenerated cellulose fibre, fabric, yarn or tow starting material without loss of fibre identity by impregnating the fibres of the starting material with a water-soluble salt of a strong acid and a nitrogenous base and heating the salt-impregnated material in a dry state at a temperature of 450-600 DEG F. unit it has passed beyond the point of lowest fibre strength and has regained a tensile strength equal to at least 20% of the original fibre strength. The product is suitable for making heat-resistant insulative articles of wearing apparel, aprons and gloves, fire barrier drapes, fire-resistant insulating sleeves for electrical conductors and for piping and conduits, and fibrous insulating bats. Fibres in flock form can be used as heat-resistant flocked coatings. Fabrics, yarns and continuous filaments can be used in fibrereinforced plastics subject to high temperatures, including "ablation" types, and types which should not include any metal or metal atoms, or leave an ash residue upon decomposition or vapourization, as backings or reinforcing fibres in high-temperature types of adhesive tapes, including pressure-sensitive adhesive tapes, and as inert acid-resistant filter cloths for filtering very hot gases, liquids and even molten metals. The yarns have better heat resistance than insulating properties than asbestos fabrics. The fibrous material may be held under tension during processing. A nitrogenous phosphate salt may be used for the impregnation. Salts suitable include amine and ammonium salts of strong acids, provided these have a solubility of at least 10% in water; e.g. salts of ammonium, mono-, di-, and tri-methyl- and ethyl-amines, hydrazine, aniline, morpholine, pyridine and ethylene diamine with sulphamic, sulphuric, phosphoric, hydrochloric, hydrofluoric, tri-chloroacetic and tri-fluoroacetic acids; ammonium sulphate and sulphamate, dibasic ammonium phosphate, ammonium chloride, and methyl- and ethyl amine salts of phosphoric acids, and mixtures thereof, are preferred, 10-30% solutions being preferably used to give a salt pickup of 5-20% on the dry basis. Hot solutions may be used, e.g. at 140 DEG F. A mixture which may be used consists of 10% ammonium sulphamate, 4% dibasic ammonium phosphate, 2% dicyandiamide, 4% boric acid and 80% water. In a preferred method, the impregnated material is heated for 5-30 mins. at 550 DEG -500 DEG F., conditions being so controlled as to produce a product having a tensile strength of at least 40% of the original tensile strength. The black product is thereafter washed to remove soluble residues. The material may be impregnated with a phosphate salt and so treated as to yield a flexible flame-resistant product which is free from after-glow an intense heating and has a chemical composition comprising 54-61% carbon, 3.4-4.0% hydrogen and 3.1-5.8% nitrogen. Phosphate salts are preferred owing to the flame- and fire-proofing thereby imparted and the freedom from glow or after-glow of the finished product when subjected to intense heat or flame. Alternatively, where other salts are used for the treatment, the black product may be impregnated with a phosphate salt solution e.g. 10% aqueous dibasic ammonium phosphate and dried.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2212960A | 1960-04-14 | 1960-04-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB986637A true GB986637A (en) | 1965-03-17 |
Family
ID=21807955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1259061A Expired GB986637A (en) | 1960-04-14 | 1961-04-07 | Black organic fibres and fabrics and processes for making them from regenerated cellulose |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH373730A (en) |
DE (1) | DE1159387B (en) |
GB (1) | GB986637A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0007693A1 (en) * | 1978-06-07 | 1980-02-06 | Fireproof Products Limited | Process for the production of a black non-conductive cellulose-based textile fibre |
-
1961
- 1961-04-07 GB GB1259061A patent/GB986637A/en not_active Expired
- 1961-04-13 CH CH438061A patent/CH373730A/en unknown
- 1961-04-13 DE DEM48679A patent/DE1159387B/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0007693A1 (en) * | 1978-06-07 | 1980-02-06 | Fireproof Products Limited | Process for the production of a black non-conductive cellulose-based textile fibre |
Also Published As
Publication number | Publication date |
---|---|
DE1159387B (en) | 1963-12-19 |
CH438061A4 (en) | 1963-08-30 |
CH373730A (en) | 1964-01-31 |
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