GB1453178A - Flame-retardant compositions for polyurethane foams - Google Patents
Flame-retardant compositions for polyurethane foamsInfo
- Publication number
- GB1453178A GB1453178A GB3929674A GB3929674A GB1453178A GB 1453178 A GB1453178 A GB 1453178A GB 3929674 A GB3929674 A GB 3929674A GB 3929674 A GB3929674 A GB 3929674A GB 1453178 A GB1453178 A GB 1453178A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalyst
- metal
- polyurethane foams
- barium carbonate
- flame
- 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
- 239000000203 mixture Substances 0.000 title abstract 8
- 229920005830 Polyurethane Foam Polymers 0.000 title abstract 4
- 239000011496 polyurethane foam Substances 0.000 title abstract 4
- 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 title abstract 3
- 239000003063 flame retardant Substances 0.000 title abstract 3
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 abstract 6
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 abstract 6
- 229910052751 metal Inorganic materials 0.000 abstract 6
- 239000002184 metal Substances 0.000 abstract 6
- -1 polytetrafluoroethylene Polymers 0.000 abstract 4
- 239000003054 catalyst Substances 0.000 abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- 229910052787 antimony Inorganic materials 0.000 abstract 2
- 229920001577 copolymer Polymers 0.000 abstract 2
- 238000009472 formulation Methods 0.000 abstract 2
- 229910052736 halogen Inorganic materials 0.000 abstract 2
- 150000002367 halogens Chemical class 0.000 abstract 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 2
- 229920000642 polymer Polymers 0.000 abstract 2
- 150000003839 salts Chemical class 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- ZWWKXEXFVYBART-UHFFFAOYSA-N 2,5-diisocyanato-5-methylcyclohexa-1,3-diene Chemical class O=C=NC1(C)CC=C(N=C=O)C=C1 ZWWKXEXFVYBART-UHFFFAOYSA-N 0.000 abstract 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 abstract 1
- 239000004604 Blowing Agent Substances 0.000 abstract 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 abstract 1
- 229910010413 TiO 2 Inorganic materials 0.000 abstract 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 abstract 1
- 239000007983 Tris buffer Substances 0.000 abstract 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 150000007513 acids Chemical class 0.000 abstract 1
- 150000001335 aliphatic alkanes Chemical class 0.000 abstract 1
- RGCKGOZRHPZPFP-UHFFFAOYSA-N alizarin Chemical compound C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 abstract 1
- 150000001336 alkenes Chemical class 0.000 abstract 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 abstract 1
- 239000003963 antioxidant agent Substances 0.000 abstract 1
- 229910052785 arsenic Inorganic materials 0.000 abstract 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 abstract 1
- 229920001400 block copolymer Polymers 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 239000001055 blue pigment Substances 0.000 abstract 1
- 239000006229 carbon black Substances 0.000 abstract 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 abstract 1
- 150000001735 carboxylic acids Chemical class 0.000 abstract 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 abstract 1
- 239000004927 clay Substances 0.000 abstract 1
- 229910052570 clay Inorganic materials 0.000 abstract 1
- 239000003426 co-catalyst Substances 0.000 abstract 1
- 238000004132 cross linking Methods 0.000 abstract 1
- LRCFXGAMWKDGLA-UHFFFAOYSA-N dioxosilane;hydrate Chemical compound O.O=[Si]=O LRCFXGAMWKDGLA-UHFFFAOYSA-N 0.000 abstract 1
- 239000000975 dye Substances 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 abstract 1
- 150000002118 epoxides Chemical class 0.000 abstract 1
- 239000000417 fungicide Substances 0.000 abstract 1
- 239000001056 green pigment Substances 0.000 abstract 1
- 229920001519 homopolymer Polymers 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 150000004679 hydroxides Chemical class 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 235000019198 oils Nutrition 0.000 abstract 1
- 150000007524 organic acids Chemical class 0.000 abstract 1
- 235000005985 organic acids Nutrition 0.000 abstract 1
- 125000002524 organometallic group Chemical class 0.000 abstract 1
- 150000004707 phenolate Chemical class 0.000 abstract 1
- 150000003003 phosphines Chemical group 0.000 abstract 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 abstract 1
- 229920005862 polyol Polymers 0.000 abstract 1
- 229920000098 polyolefin Polymers 0.000 abstract 1
- 150000003077 polyols Chemical class 0.000 abstract 1
- 229920001451 polypropylene glycol Polymers 0.000 abstract 1
- 229920001296 polysiloxane Polymers 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 1
- 239000004800 polyvinyl chloride Substances 0.000 abstract 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 229960004029 silicic acid Drugs 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012424 soybean oil Nutrition 0.000 abstract 1
- 239000003549 soybean oil Substances 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000004094 surface-active agent Substances 0.000 abstract 1
- 239000000454 talc Substances 0.000 abstract 1
- 229910052623 talc Inorganic materials 0.000 abstract 1
- 239000012970 tertiary amine catalyst Substances 0.000 abstract 1
- 229910052718 tin Inorganic materials 0.000 abstract 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 abstract 1
- 239000011787 zinc oxide Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L57/00—Compositions of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08L57/06—Homopolymers or copolymers containing elements other than carbon and hydrogen
- C08L57/08—Homopolymers or copolymers containing elements other than carbon and hydrogen containing halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/302—Polyurethanes or polythiourethanes; Polyurea or polythiourea
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- 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
- Y10S521/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S521/906—Polyurethane cellular product containing unreacted flame-retardant material
Landscapes
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00405072A US3857802A (en) | 1973-10-10 | 1973-10-10 | Barium carbonate as a modifier for certain non-rigid polymethane forms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1453178A true GB1453178A (en) | 1976-10-20 |
Family
ID=23602163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3929674A Expired GB1453178A (en) | 1973-10-10 | 1974-09-09 | Flame-retardant compositions for polyurethane foams |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3857802A (cg-RX-API-DMAC7.html) |
| JP (1) | JPS5066597A (cg-RX-API-DMAC7.html) |
| CA (1) | CA1039449A (cg-RX-API-DMAC7.html) |
| DE (1) | DE2446620C2 (cg-RX-API-DMAC7.html) |
| FR (1) | FR2247497B1 (cg-RX-API-DMAC7.html) |
| GB (1) | GB1453178A (cg-RX-API-DMAC7.html) |
| NL (1) | NL7412126A (cg-RX-API-DMAC7.html) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3931062A (en) * | 1973-11-08 | 1976-01-06 | The General Tire & Rubber Company | Flexible hot-molded flame retardant polyurethane foams |
| DE2916232A1 (de) * | 1979-04-21 | 1980-10-30 | Helmut Pelzer | Verfahren zur herstellung von mit fuellstoffen versehenen polyurethanschaumstoffen |
| FR2504716A1 (fr) * | 1981-04-24 | 1982-10-29 | Sogefid Sarl | Composition ignifuge d'isolation et de protection et cables electriques en faisant application |
| US4544678A (en) * | 1984-11-19 | 1985-10-01 | Stauffer Chemical Company | Filled or extended polyurethane foam containing polyethylene glycol softening agent |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3075928A (en) * | 1960-06-09 | 1963-01-29 | Union Carbide Corp | Preparation of flame-resistant urethane foams |
| US3718611A (en) * | 1969-04-24 | 1973-02-27 | Gen Tire & Rubber Co | Urethane foams containing halogen containing polymers and methods for preparing the same using certain catalysts |
| US3574149A (en) * | 1969-05-13 | 1971-04-06 | Gen Tire & Rubber Co | Flame retardant flexible polyurethane foams |
| US3600340A (en) * | 1969-06-30 | 1971-08-17 | Basf Wyandotte Corp | Polyurethane foam |
| US3635821A (en) * | 1969-07-23 | 1972-01-18 | M & T Chemicals Inc | Flame retardant compositions comprising an inert filler, a halogen source and a phosphorus-containing compound and methods for their preparation |
| US3644229A (en) * | 1970-06-01 | 1972-02-22 | Gen Tire & Rubber Co | Hydrophilic-poromeric foam method of making, and articles made therefrom |
| US3697456A (en) * | 1970-09-03 | 1972-10-10 | Olin Corp | Flame-retardant polyurethane foam |
| US3738953A (en) * | 1971-12-06 | 1973-06-12 | Upjohn Co | Synergistic fire retardant foams |
-
1973
- 1973-10-10 US US00405072A patent/US3857802A/en not_active Expired - Lifetime
-
1974
- 1974-09-09 GB GB3929674A patent/GB1453178A/en not_active Expired
- 1974-09-12 NL NL7412126A patent/NL7412126A/xx not_active Application Discontinuation
- 1974-09-30 DE DE2446620A patent/DE2446620C2/de not_active Expired
- 1974-10-01 JP JP49112391A patent/JPS5066597A/ja active Pending
- 1974-10-02 FR FR7433165A patent/FR2247497B1/fr not_active Expired
- 1974-10-04 CA CA210,788A patent/CA1039449A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2446620C2 (de) | 1983-10-20 |
| NL7412126A (nl) | 1975-04-14 |
| FR2247497A1 (cg-RX-API-DMAC7.html) | 1975-05-09 |
| JPS5066597A (cg-RX-API-DMAC7.html) | 1975-06-04 |
| FR2247497B1 (cg-RX-API-DMAC7.html) | 1978-11-24 |
| US3857802A (en) | 1974-12-31 |
| DE2446620A1 (de) | 1975-04-17 |
| CA1039449A (en) | 1978-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |