GB700822A - Improvements in or relating to a process of producing a condensation product having fire-resistant properties and to products incorporating said composition - Google Patents
Improvements in or relating to a process of producing a condensation product having fire-resistant properties and to products incorporating said compositionInfo
- Publication number
- GB700822A GB700822A GB14004/51A GB1400451A GB700822A GB 700822 A GB700822 A GB 700822A GB 14004/51 A GB14004/51 A GB 14004/51A GB 1400451 A GB1400451 A GB 1400451A GB 700822 A GB700822 A GB 700822A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphorus
- condensation product
- nitrogen
- solution
- 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
- 239000007859 condensation product Substances 0.000 title abstract 10
- 239000000047 product Substances 0.000 title abstract 4
- 230000009970 fire resistant effect Effects 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 10
- 239000000463 material Substances 0.000 abstract 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 6
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 abstract 6
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 abstract 6
- 239000000243 solution Substances 0.000 abstract 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 4
- 229920002678 cellulose Polymers 0.000 abstract 4
- 239000001913 cellulose Substances 0.000 abstract 4
- 239000004744 fabric Substances 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 3
- 229920000742 Cotton Polymers 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 229920003180 amino resin Polymers 0.000 abstract 3
- 229910021529 ammonia Inorganic materials 0.000 abstract 3
- 235000019270 ammonium chloride Nutrition 0.000 abstract 3
- 238000005341 cation exchange Methods 0.000 abstract 3
- 239000000460 chlorine Substances 0.000 abstract 3
- 229910052801 chlorine Inorganic materials 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 abstract 3
- 229920001568 phenolic resin Polymers 0.000 abstract 3
- 239000005011 phenolic resin Substances 0.000 abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 238000010306 acid treatment Methods 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 2
- 239000012442 inert solvent Substances 0.000 abstract 2
- 239000013067 intermediate product Substances 0.000 abstract 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract 2
- 239000011574 phosphorus Substances 0.000 abstract 2
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 abstract 2
- DGXAGETVRDOQFP-UHFFFAOYSA-N 2,6-dihydroxybenzaldehyde Chemical compound OC1=CC=CC(O)=C1C=O DGXAGETVRDOQFP-UHFFFAOYSA-N 0.000 abstract 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract 1
- 239000004115 Sodium Silicate Substances 0.000 abstract 1
- 229920001807 Urea-formaldehyde Polymers 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 abstract 1
- 229920005546 furfural resin Polymers 0.000 abstract 1
- 239000003365 glass fiber Substances 0.000 abstract 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical group [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 abstract 1
- 238000005342 ion exchange Methods 0.000 abstract 1
- 239000003350 kerosene Substances 0.000 abstract 1
- -1 naphtha Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052911 sodium silicate Inorganic materials 0.000 abstract 1
- 239000002023 wood Substances 0.000 abstract 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/34—Ignifugeants
-
- 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
- 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
- D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
-
- 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
- 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
- D06M11/32—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—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 oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/47—Oxides or hydroxides of elements of Groups 5 or 15 of the Periodic Table; Vanadates; Niobates; Tantalates; Arsenates; Antimonates; Bismuthates
-
- 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
- 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
- D06M13/244—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 sulfur or phosphorus
- D06M13/282—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 sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
-
- 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
- D06M15/667—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing phosphorus in the main chain
-
- 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
- D06M15/667—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing phosphorus in the main chain
- D06M15/673—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing phosphorus in the main chain containing phosphorus and nitrogen in the main chain
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/10—Phosphorus-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/73—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of inorganic material
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/0002—Flame-resistant papers; (complex) compositions rendering paper fire-resistant
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
A water - soluble nitrogen and phosphorus containing condensation product substantially free from chlorine obtained by reacting phosphorus oxychloride with an ammonia (see Group III) having a molecular weight 180-300 and a nitrogen-phosphorus atomic ratio of 2.1 - 2.3, yielding a solution having an alkaline pH 7.0 - 8.5, and being reactive with cellulose, may be used as a constituent of phenolic resins or aminoplasts, e.g. urea- or melamine-form-aldehyde, or urea-or-melamine-furfural resins, which in the case of aminoplasts, intumesce when heated, and may be used to impregnate fabrics, or may be applied, in combination with phenolic resins to a mass of glass fibres to bond them together and form a material suitable for insulating layers or air filters. Examples describe how (iv) cotton sheeting is impregnated with an aqueous solution containing 30 per cent. of the condensation product and 1.5 per cent. of a water soluble urea-formaldehyde condensation product and is cured at 140 DEG C. for 30 mins; (v) cloth is impregnated with a water solution of a resorcinol-formaldehyde resin (75 parts) containing the condensation product (5 parts) and a basic condensation catalyst (20 parts) and is cured at 150 DEG C.ALSO:A water-soluble nitrogen and phosphorus-containing condensation product, substantially free from chlorine, having a molecular weight 180-300, and a nitrogen-phosphorus atomic ratio of 2.1-2.3, and yielding a solution having an alkaline pH 7.0-8.5 is prepared by reacting phosphorus oxychloride with ammonia at a temperature below 100 DEG C. and then heating the product so formed to at least 110 DEG C., but below 150 DEG C. The reaction may be carried out with at least the stoichiometric proportion of gaseous or liquid ammonia in an inert solvent, e.g. kerosene, naphtha, hexane, benzene, or acetone, in an autoclave to form an intermediate product soluble in anhydrous liquid ammonia. The further heating for 30 minutes to 6 hours in the autoclave converts the nitrogen-phosphorus-containing intermediate product to a form insoluble in anhydrous liquid ammonia. After filtration, the inert solvent may be recovered by distillation, and resulting product may be separated from the ammonium chloride also formed by (i) treatment with water to dissolve the product, which is precipitated from the solution by methanol, (ii) treatment with anhydrous liquid ammonia to dissolve the ammonium chloride, or (iii) treatment with methanol to dissolve the ammonium chloride. The nitrogen-phosphorus-containing condensation product may be used to treat cellulose materials to form a cation exchange material, which after acid treatment, yields silica sols when contacted with sodium silicate solution. The condensation products may also be used to render combustible materials, such as wood, paper or cotton fabric glowproof, and as constituents of aminoplast or phenolic resins.ALSO:A water-soluble nitrogen- and phosphorus-containing condensation product substantially free from chlorine obtained by reacting phosphorus oxychloride with ammonia (see Group III), having a molecular weight 180-300 and a nitrogen-phosphorus atomic ratio of 2.1-2.3, yielding a solution having an alkaline pH 7.0-8.5, and being reactive with cellulose, may be used to treat cellulose materials to form after heating to 100-200 DEG C. and preferably after acid treatment, a cation exchange material. Examples describe how cotton fabric is impregnated with the condensation product, is soaked with a 5 per cent soluton of hydrochloric acid and is used as hydrogen ion exchange material for calcium chloride solution, the resulting acid being titrated against caustic soda to determine the cation exchange capacity.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US169507A US2661263A (en) | 1950-06-21 | 1950-06-21 | Phosphorous oxychloride and ammonia reaction products in flame retarding compositions applied to cellulosic materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB700822A true GB700822A (en) | 1953-12-09 |
Family
ID=22615985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14004/51A Expired GB700822A (en) | 1950-06-21 | 1951-06-13 | Improvements in or relating to a process of producing a condensation product having fire-resistant properties and to products incorporating said composition |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2661263A (en) |
| GB (1) | GB700822A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1161675B (en) * | 1955-07-22 | 1964-01-23 | Bayer Ag | Flame retardants |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2898180A (en) * | 1956-05-09 | 1959-08-04 | Olin Mathieson | Method of flameproofing cellulosic textile material with phosphorous triisocyanate or phosphoryl triisocyanate and products produced thereby |
| US2964377A (en) * | 1957-02-18 | 1960-12-13 | Victor Chemical Works | Flameproofing reaction product and use of same |
| CN104760096B (en) * | 2015-03-30 | 2017-05-03 | 广西宾阳县荣良新材料科技有限公司 | Production method of anticorrosion low-formaldehyde composite solid wood floor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2052836A (en) * | 1934-03-13 | 1936-09-01 | Lowy Rudolf | Brush, especially for massage purposes |
| US2401440A (en) * | 1942-02-18 | 1946-06-04 | Monsanto Chemicals | Cellulose phosphonamides |
| US2464342A (en) * | 1943-04-16 | 1949-03-15 | Frederick F Pollak | Manufacture of waterproof and water-repellent noninflammable fibrous materials |
| US2416447A (en) * | 1943-07-27 | 1947-02-25 | Du Pont | Weather resistant flameproof paper |
| US2427997A (en) * | 1944-01-07 | 1947-09-23 | Clarence B White | Flame resistant fabric material |
| US2462803A (en) * | 1945-03-23 | 1949-02-22 | Kenneth S Campbell | Fireproofing compositions |
-
1950
- 1950-06-21 US US169507A patent/US2661263A/en not_active Expired - Lifetime
-
1951
- 1951-06-13 GB GB14004/51A patent/GB700822A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1161675B (en) * | 1955-07-22 | 1964-01-23 | Bayer Ag | Flame retardants |
Also Published As
| Publication number | Publication date |
|---|---|
| US2661263A (en) | 1953-12-01 |
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