AU634415B2 - Ammonium pyrophosphate flame retardants - Google Patents
Ammonium pyrophosphate flame retardants Download PDFInfo
- Publication number
- AU634415B2 AU634415B2 AU82451/91A AU8245191A AU634415B2 AU 634415 B2 AU634415 B2 AU 634415B2 AU 82451/91 A AU82451/91 A AU 82451/91A AU 8245191 A AU8245191 A AU 8245191A AU 634415 B2 AU634415 B2 AU 634415B2
- Authority
- AU
- Australia
- Prior art keywords
- pyrophosphate
- phosphorus
- process according
- ammonium
- present
- 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.)
- Ceased
Links
- VKFFEYLSKIYTSJ-UHFFFAOYSA-N tetraazanium;phosphonato phosphate Chemical compound [NH4+].[NH4+].[NH4+].[NH4+].[O-]P([O-])(=O)OP([O-])([O-])=O VKFFEYLSKIYTSJ-UHFFFAOYSA-N 0.000 title claims description 27
- 239000003063 flame retardant Substances 0.000 title claims description 6
- 239000000758 substrate Substances 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 32
- 239000000243 solution Substances 0.000 claims description 23
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 claims description 22
- 235000011180 diphosphates Nutrition 0.000 claims description 17
- 229940048084 pyrophosphate Drugs 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- 239000002023 wood Substances 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 10
- 239000011574 phosphorus Substances 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 150000004657 carbamic acid derivatives Chemical class 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 5
- 229920000388 Polyphosphate Polymers 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 5
- 239000001205 polyphosphate Substances 0.000 claims description 5
- 235000011176 polyphosphates Nutrition 0.000 claims description 5
- 229940005657 pyrophosphoric acid Drugs 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- ZRALSGWEFCBTJO-UHFFFAOYSA-N guanidine group Chemical group NC(=N)N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims description 2
- 239000011093 chipboard Substances 0.000 claims description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 2
- 239000000123 paper Substances 0.000 claims description 2
- 125000004437 phosphorous atom Chemical group 0.000 claims description 2
- 239000011120 plywood Substances 0.000 claims description 2
- 239000007790 solid phase Substances 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims 2
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims 2
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims 1
- 210000002837 heart atrium Anatomy 0.000 claims 1
- 150000002500 ions Chemical class 0.000 claims 1
- KJAMZCVTJDTESW-UHFFFAOYSA-N tiracizine Chemical compound C1CC2=CC=CC=C2N(C(=O)CN(C)C)C2=CC(NC(=O)OCC)=CC=C21 KJAMZCVTJDTESW-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 description 12
- 239000000047 product Substances 0.000 description 12
- 239000013078 crystal Substances 0.000 description 10
- 238000005470 impregnation Methods 0.000 description 10
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 9
- 229920001276 ammonium polyphosphate Polymers 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000002425 crystallisation Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 239000004114 Ammonium polyphosphate Substances 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 238000001723 curing Methods 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 235000021317 phosphate Nutrition 0.000 description 5
- 229920000137 polyphosphoric acid Polymers 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 230000000979 retarding effect Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- -1 ammonium ions Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013007 heat curing Methods 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- RDMZIKMKSGCBKK-UHFFFAOYSA-N disodium;(9,11-dioxido-5-oxoboranyloxy-2,4,6,8,10,12,13-heptaoxa-1,3,5,7,9,11-hexaborabicyclo[5.5.1]tridecan-3-yl)oxy-oxoborane;tetrahydrate Chemical compound O.O.O.O.[Na+].[Na+].O1B(OB=O)OB(OB=O)OB2OB([O-])OB([O-])OB1O2 RDMZIKMKSGCBKK-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 235000019809 paraffin wax Nutrition 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/38—Condensed phosphates
- C01B25/42—Pyrophosphates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/02—Inorganic materials
- C09K21/04—Inorganic materials containing phosphorus
-
- 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
- D06M11/68—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
- D06M11/72—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 metaphosphoric acids or their salts; with polyphosphoric acids or their salts; with perphosphoric acids or their salts
-
- 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
- D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
- D06M15/423—Amino-aldehyde resins
- D06M15/43—Amino-aldehyde resins modified by phosphorus compounds
- D06M15/433—Amino-aldehyde resins modified by phosphorus compounds by phosphoric acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Fireproofing Substances (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Paper (AREA)
- Anti-Oxidant Or Stabilizer Compositions (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB909017823A GB9017823D0 (en) | 1990-08-14 | 1990-08-14 | Complex phosphates |
| GB9017823 | 1990-08-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU8245191A AU8245191A (en) | 1992-02-20 |
| AU634415B2 true AU634415B2 (en) | 1993-02-18 |
Family
ID=10680642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU82451/91A Ceased AU634415B2 (en) | 1990-08-14 | 1991-08-14 | Ammonium pyrophosphate flame retardants |
Country Status (19)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5508120A (en) * | 1994-08-12 | 1996-04-16 | The Dow Chemical Company | Boron carbide cermet structural materials with high flexure strength at elevated temperatures |
| US5912196A (en) * | 1995-12-20 | 1999-06-15 | Kimberly-Clark Corp. | Flame inhibitor composition and method of application |
| US6296045B1 (en) | 1998-08-12 | 2001-10-02 | The Dow Chemical Company | Ceramic-metal composite and method to form said composite |
| CN1273413C (zh) * | 2001-08-29 | 2006-09-06 | 陶氏环球技术公司 | 含硼陶瓷－铝金属复合材料和形成该复合材料的方法 |
| US9995947B2 (en) | 2012-09-07 | 2018-06-12 | BeautiEyes, LLC | Prosthesis and method for widening the palpebral fissure of an individual's eye |
| US9132005B2 (en) | 2012-09-07 | 2015-09-15 | BeautiEyes, LLC | Eye aperture enhancing prosthesis and method |
| US9414906B2 (en) | 2012-09-07 | 2016-08-16 | BeautiEyes, LLC | Eye aperture enhancing prosthesis and method |
| WO2018221567A1 (ja) | 2017-06-01 | 2018-12-06 | 大八化学工業株式会社 | 木質材料用難燃剤及び難燃性木質材料 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920796A (en) * | 1973-04-30 | 1975-11-18 | Tennessee Valley Authority | Method of preparing purified phosphates from impure phosphoric acid |
| AU7382391A (en) * | 1990-03-26 | 1991-10-03 | Albright & Wilson Limited | Coating composition and process |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3436250A (en) * | 1964-08-25 | 1969-04-01 | Asahi Chemical Ind | Method for retaining flame and soil resistances to fabrics |
| US3537814A (en) * | 1967-08-24 | 1970-11-03 | Tennessee Valley Authority | Ammonium polyphosphate produced at atmospheric pressure |
| SU331657A1 (ru) * | 1970-09-28 | 1975-09-25 | Институт органической химии АН Киргизской ССР | Способ получени комплексной соли на основе пирофосфата меди |
| BE757018A (fr) * | 1970-10-05 | 1971-03-16 | Smits Eugene Pierre | Materiau pour l'execution d'elements de contruction, procede defabrication dudit materiau et installation. |
| JPS498839B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1970-12-29 | 1974-02-28 | ||
| GB1504507A (en) * | 1973-11-29 | 1978-03-22 | Albright & Wilson | Flameproofing process |
| US4447336A (en) * | 1981-12-18 | 1984-05-08 | Monsanto Company | Stabilized galactomannan gum compositions |
| US4935055A (en) * | 1988-01-07 | 1990-06-19 | Lanxide Technology Company, Lp | Method of making metal matrix composite with the use of a barrier |
| US4834938A (en) * | 1988-04-25 | 1989-05-30 | The Dow Chemical Company | Method for making composite articles that include complex internal geometry |
| US5039633A (en) * | 1989-09-14 | 1991-08-13 | The Dow Chemical Company | B4C/Al cermets and method for making same |
-
1990
- 1990-08-14 GB GB909017823A patent/GB9017823D0/en active Pending
-
1991
- 1991-02-25 US US07/660,370 patent/US5196238A/en not_active Expired - Lifetime
- 1991-08-08 GB GB9117077A patent/GB2247010A/en not_active Withdrawn
- 1991-08-09 EP EP19910113433 patent/EP0471313A3/en not_active Withdrawn
- 1991-08-12 IL IL99164A patent/IL99164A0/xx unknown
- 1991-08-13 PL PL29141891A patent/PL291418A1/xx unknown
- 1991-08-13 FI FI913838A patent/FI913838A7/fi not_active Application Discontinuation
- 1991-08-13 TW TW080106375A patent/TW214565B/zh active
- 1991-08-13 ZA ZA916397A patent/ZA916397B/xx unknown
- 1991-08-13 CA CA002049078A patent/CA2049078A1/en not_active Abandoned
- 1991-08-13 IE IE286491A patent/IE912864A1/en unknown
- 1991-08-13 NO NO91913154A patent/NO913154L/no unknown
- 1991-08-14 CN CN91108857A patent/CN1059945A/zh active Pending
- 1991-08-14 KR KR1019910014010A patent/KR920004548A/ko not_active Withdrawn
- 1991-08-14 BR BR919103475A patent/BR9103475A/pt unknown
- 1991-08-14 AU AU82451/91A patent/AU634415B2/en not_active Ceased
- 1991-08-14 JP JP3204162A patent/JPH04233992A/ja active Pending
- 1991-08-14 HU HU912701A patent/HUT59178A/hu unknown
- 1991-08-14 CS CS912518A patent/CS251891A3/cs unknown
- 1991-08-14 PT PT98683A patent/PT98683A/pt not_active Application Discontinuation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3920796A (en) * | 1973-04-30 | 1975-11-18 | Tennessee Valley Authority | Method of preparing purified phosphates from impure phosphoric acid |
| AU7382391A (en) * | 1990-03-26 | 1991-10-03 | Albright & Wilson Limited | Coating composition and process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059945A (zh) | 1992-04-01 |
| EP0471313A3 (en) | 1992-12-23 |
| BR9103475A (pt) | 1992-05-12 |
| KR920004548A (ko) | 1992-03-27 |
| US5196238A (en) | 1993-03-23 |
| GB9117077D0 (en) | 1991-09-25 |
| GB9017823D0 (en) | 1990-09-26 |
| CS251891A3 (en) | 1992-03-18 |
| FI913838A0 (fi) | 1991-08-13 |
| HUT59178A (en) | 1992-04-28 |
| JPH04233992A (ja) | 1992-08-21 |
| IE912864A1 (en) | 1992-02-26 |
| FI913838L (fi) | 1992-02-15 |
| EP0471313A2 (en) | 1992-02-19 |
| ZA916397B (en) | 1993-04-28 |
| PL291418A1 (en) | 1992-02-24 |
| HU912701D0 (en) | 1992-01-28 |
| TW214565B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-10-11 |
| FI913838A7 (fi) | 1992-02-15 |
| IL99164A0 (en) | 1992-07-15 |
| NO913154L (no) | 1992-02-17 |
| PT98683A (pt) | 1992-07-31 |
| CA2049078A1 (en) | 1992-02-15 |
| GB2247010A (en) | 1992-02-19 |
| AU8245191A (en) | 1992-02-20 |
| NO913154D0 (no) | 1991-08-13 |
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