Classifications

• • D—TEXTILES; PAPER
  • 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
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/61—Polyamines polyimines
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/92—Fire or heat protection feature
  • Y10S428/921—Fire or flameproofing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2631—Coating or impregnation provides heat or fire protection
  • Y10T442/2672—Phosphorus containing
  • Y10T442/2689—A phosphorus containing compound and a nitrogen containing compound

Definitions

• the present invention relates to a new or improved method of flame-proofing combustible cellulosic materials that enables them to be washed or laundered in hot aqueous media'without losing their flame-proof qualities, and to the resulting fiame-proofed cellulosic materials.
• the invention also relates to a new reagent for use as a flame-proofing component according to the aforesaid new or improved method of flame-proofing combustible cellulosic materials.
• the cellulosic materials to which the invention is especially applicable are textile fabrics, for instance woven or pleated fabrics, threads, yarns, filaments, and fibres, made of cotton, linen, regenerated cellulose, jute, cellulose acetate, and the like.
• a process has already been disclosed which comprises treating with an acidic-flre-retardant as for example phosphoric acid or calcium phytate a cellulosic material impregnated with polyethyleneimine.
• an acidic-flre-retardant as for example phosphoric acid or calcium phytate a cellulosic material impregnated with polyethyleneimine.
• An object of the present invention is to provide a method of flame-proofing combustible cellulosic materials, and a new flame-proofing component used in carrying out the method, yielding flame-proof products that retain their flame-proof qualities subsequent to hot water washing and laundering with hot soap solutions in a more satisfactory degree than heretofore.
• compositions comprising the novel compound pentaerythritol tetraorthophosphate can be readily anchored to cellulosic materials impregnated with a polyethyleneimine to give flame-proof cellulosic materials which retain their flame-proof characteristics subsequent to their treatment with soap and water washing.
• the method of flame-proofing combustible cellulosic materials comprises treating the said materials impregnated with .a polyethyleneimine with a solution comprising pentaerythritol tetraorthophosphate.
• Crude pentaerythritol tetra-orthophosphate was prepared from pentaerythritol, ortho-phosphoric acid and phosphorus pentoxide as follows, the quantities employed being based upon the molecular ratio of three parts pentaerythritol, four parts of ortho-phosporic acid and four parts phosphorus pentoxide.
• Phosphoric acid 11 gr. of 88%) was added gradually to phosphorus pentoxide (25 gr.) and when the mixture was cool, pentaerythritol (15.3 gr.) was added thereto, the whole being well stirred.
• the mixture was heated in an oil bath at -130 C. for 20 hours with exclusion of moisture and occasional stirring.
• the crude pentaerythritol tetra-orthophosphate product thus formed probably contained phosphoric acid and pentaerythritol tri-, diand monoorthophosphate in addition to the pentaerythritol tetra-orthophosphate.
• the handle or feel is found to be often improved by cutting down the quantity of polyethyleneimine with which the combustible cellulosic materials is impregnated, as for example by working with polyethyleneimine solutions of strengths lower than 8-12 per cent, but to make certain that in such cases the product remains flame-proof after soap and water washing it is often necessary to treat it subsequent to the pentaerythritol tetra-orthophosphate treatment with an acidified aqueous solution of hexamethoxymethyl melamine or triethoxymethyl melamine followed by baking at about 100 C.
• the said acidification can be efiected for ex-' ample with paratolueue sulphonic acid.
• a piece of cotton cloth (12 sq. ins.) was soaked in 10 ml. or a boiling aqueous solution of polyethyleneimine for one hour, wrung out and baked in a steam oven overnight.
• the clot-h was then steeped in 15 ml. of an aqueous solution of the crude pentaerythritol tetra-orthophosphate for one hour at room temperature, thoroughly rinsed, and dried. The time given for each operation and the quantities used were arbitrarily fixed.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9711065

Family Applications (1)

Country Status (3)

Cited By (5)

Families Citing this family (1)

Citations (4)

• 0
  • BE BE461753D patent/BE461753A/xx unknown
• 1945
  • 1945-11-15 US US62899445 patent/US2472335A/en not_active Expired - Lifetime
  • 1945-12-22 FR FR919288D patent/FR919288A/fr not_active Expired

Patent Citations (4)

Also Published As

Similar Documents