GB2058109A - PTFE-containing finish for glass fabrics - Google Patents
PTFE-containing finish for glass fabrics Download PDFInfo
- Publication number
- GB2058109A GB2058109A GB8021764A GB8021764A GB2058109A GB 2058109 A GB2058109 A GB 2058109A GB 8021764 A GB8021764 A GB 8021764A GB 8021764 A GB8021764 A GB 8021764A GB 2058109 A GB2058109 A GB 2058109A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- glass fabric
- weight
- coating
- aqueous dispersion
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- C08L27/12—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 fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2003—Glass or glassy material
- B01D39/2017—Glass or glassy material the material being filamentary or fibrous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2055—Carbonaceous material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/38—Organo-metal compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/057—Metal alcoholates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0471—Surface coating material
- B01D2239/0478—Surface coating material on a layer of the filter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1291—Other parameters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Laminated Bodies (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Woven Fabrics (AREA)
Abstract
Improved flex life and acid resistance are imparted to glass fabric by forming thereon a coating comprising polytetrafluoroethylene, polyphenylene sulfide, a silicone oil and at least one water-insoluble product derived from a titanium compound selected from polyhydrolyzable organic titanates and water-soluble inorganic titanium salts. Preferably, the coating also includes graphite. The coating can be obtained by applying one or more aqueous dispersions of the above materials followed by drying at elevated temperature (the titanium compound being used in water-soluble form and being converted to a water-insoluble product on drying). The coated fabric is useful as a filter medium.
Description
SPECIFICATION
High temperature finish for glass fabrics
This invention relates to coating glass fabric to improve its flex life and acid resistance. The resulting product is particularly useful as a filter medium.
It is known to apply polytetrafluoroethylene coating to glass fabric to obtain a product which is useful as a filtration material. One such product is disclosed in British Patent No. 1,262,070, wherein glass fabric is coated with a bath containing polytetrafluoroethylene, a mixture of silicone resin and silicone oil and optionally graphite. At present the most effective type of polytetrafluoroethylene coating for glass filter fabrics on the market are dispersions containing water, polytetrafluoroethylene and a polyhydrolyzable tetravalent organic titanate such as the coatings disclosed in U.S. patent No. 3,838,082. However, it is necessary to apply a high chemical loading of these dispersions in order to obtain acceptable flex life and acid resistance and thus the resulting product is quite expensive.
The present invention relates to a coating for glass fabric which improves flex life and acid resistance to acceptable levels at lower chemical loadings than the coatings presently available. These coatings are prepared by applying to the fabric polytetrafluoroethylene, polyphenylene sulfide, silicone oil and at least one titanium compound selected from the group consisting of water-soluble polyhydrolyzable organic titanates and water-soluble inorganic titanium salts. Additionally, the coating can include graphite.
The coatings of this invention can be applied by means of a single aqueous dispersion containing all of the required components. If desired, two or more aqueous dispersions can be used, each containing a portion of the components. After application of the aqueous dispersion the fabric is dried by heating. The amount of solids coated on the fabric should be equal to about 1 to 10% by weight based on the weight of the fabric.
In accordance with the present invention, a coating is provided which imparts improved flex life and acid resistance to glass fabric at a relatively low chemical add-on. As described above, the coating is prepared by applying polytetrafluoroethylene, polyphenylene sulfide, silicone oil, at least one titanium compound selected from the group consisting of water-soluble polyhydrolyzable organic titanates and water-soluble inorganic titanium salts and optionally graphite. The above components are applied to the glass fabric from baths followed by drying at an elevated temperature. The final dried coating contains water-insoluble titanium compounds derived from the water-soluble titanium compounds applied in an aqueous bath. These water-insoluble titanium compounds are formed in situ on the surface of the glass fabric.
Polytetrafluoroethylenes suitable for the present invention are the same as those described as being suitable for use in the invention of U.S. Patent No. 3,838,082. Such polytetrafluoroethylenes have a high molecular weight and are characterized by an apparent melt viscosity of at least 1 x 109 poisies at 380"C.
under a shear stress of 0.457 kg./cm.2 using the melt indexer described in U.S. Patent No. 2,946,763.
The water-soluble polyhydrolyzable organic titanates suitable for use in the present invention are described in detail in U.S. Patent No. 3,838,082. Specific examples of such titanates include the tetraalkyl titanafes such as tetraethyl titanate, tetraisopropyl titanate, and tetrabutyl titanate; tetraethylene glycol titanate; triethanolamine titanate; titanium acetyl acetonate; titanium lactate; and the prepolymer which can be obtained by reacting tetraalkyl titanate with water. Hydrolysis of these titanates converts them to polyhydroxy compounds which are condensable to form condensation products containing the repeating unit
The preferred water-soluble inorganic titanium salt is titanium sulfate. Particularly good results are obtained with a mixture of titanium sulfate and one or more of the above-described organic titanates.
Suitable polyphenylene sulfide resins are commercially available as "Ryton" TM from Phillips Petroleum
Company. Such resins can be prepared by the process disclosed in U.S. Patent No.3,354,129. The preferred silicone oils for use in the present invention are methyl, phenyl and methylphenyl silicone oiis as well as mixtures of these compounds.
Optional components can be added to further improve performance of the coating of the present invention. These include graphite, wetting agents, migration inhibitors and ammonia. The components of the coating can be applied from one or more aqueous dispersions.
When the coating is applied from a single aqueous dispersion this dispersion should comprise:
(a) About 0.5 to 15% by weight of polytetrafluoroethylene
(b) About 1 to 10% by weight of polyphenylene sulfide
(c) About 0.2 to 8% by weight of silicone oil, and
(d) About 0.5 to 15% by weight of water-soluble titanium compound.
In a typical two-step procedure, the polytetrafluoroethylene is applied from a second aqueous dispersion after a first aqueous dispersion containing all or most of the water-soluble titanium compound has been applied to the fabric. Separating the aqueous dispersions in this manner gives increased bath stability, particularly when an inorganic titanium salt is used, and is advantageous when thetreatment bath is to be stored for a long period of time.
When drying the fabric, after application of a polytetrafluoroethylene, the drying temperature should not exceed 300"C. to ensure that sintering of polytetrafluoroethylene will not occur which would lower the flex life of the fabric. The final coating after drying should be equal to about 1 to 10% by weight based on the weight of the glass fabric prior to treatment. The coating itself should comprise at least 5% by weight of polytetrafluoroethylene, at least 4% by weight of polyphenylene sulfide, at least 3% by weight of one or more water-insoluble products derived from water-soluble polyhydrolyzable organic titanates and/or watersoluble inorganic titanium salts, and at least 2% by weight of silicone oil. The coating can additionally include up to about 30% by weight of graphite as well as other additives.
The following example is given to further illustrate the invention. In the example, parts and percent are by weight unless otherwise indicated. The glass fabric used for all the samples was Style 601 which has the following specifications: Warp yarn - 150's 1/2; fill yarn - 150's 1/4texturized; thread count (picks/in.) 54 x30; and weave - 3 x 1 twill.
The abrasion resistance of the glass fabric was determined by the M.I.T. flex test which was conducted as follows: The apparatus used is an M.I.T. Folding Endurance Tester made by Tinius Olsen Testing Machine
Company, which basically consists of a pair of spaced jaws arranged to grip opposite ends of a glass fabric sample. The machine operates to fold the fabric sample repeatedly back and forth about a line of flexure through an angle of 270". The flex life of the sample is the number of double folds (two folds are equal to one cycle) sustained by the sample prior to breaking. During the folding, one of the jaws is biased away from the other by a given constant load of two pounds, and when the sample breaks, the biased jaw pulls away from the other jaw, indicating the test has ended.At least three runs are made for each fabric sample in the fill direction (three samples of the same fabric) and the flex life reported is the mean value of the three runs. The glass fabric sample is die cut from larger samples of glass fabric, each sample being 7.61 cm. long in the weft direction and 1.27 cm. wide in the warp direction. Adhesive tape is secured to each end of the sample on both sides thereof at the location where gripped by the jaws to prevent slippage of the sample within the jaws during the flex testing.
The acid resistances of the glass fabric was determined as follows: Samples of the fabric were first pretreated under one of the following conditions:
(a) Original, i.e., no pretreating
(b) 161/2 hours at 550"F.
(c) 2 weeks at 550"F.
(d) 4 weeks at 5500F.
The samples were then subjected to five consecutive dips in 0.5 Normal sulfuric acid for 5 minutes at 185"F.
After each dip the excess acid was removed by padding and the fabric dried for five minutes at 300"F. The tensile strength (Ibs./in. - fill direction) of the treated samples were determined by the procedure of ASTM
D-1682.
Example
Samples of glass fabric were treated as follows:
(A) A treatment bath was prepared by mixing 18 parts of a dispersion containing 57.2% polytetrafluoro ethylene, 6.1% triethanolamine titanate and 36.7%water; 2.5 parts of polyphenylene sulfide; 10 parts of a mixture-containing 11% graphite in deionized water, 3 parts of methyiphenyl silicone oil; 4 parts of triethanolamine titanate; 2.5 parts of a migration inhibitor; and 61 parts water. This bath was padded onto a sample of glass fabric at a wet pick-up of about 40% and then dried at 450"F. The add-on of coating after drying was equal to about 7.5% by weight based on the weight of the fabric.
(B) A treatment bath was prepared by mixing 18 parts of a dispersion containing 57.2% polytetrafluoroethylene, 6.1% triethanolamine titanate and 36.7% water; 2.5 parts polyphenylene sulfide; 7.0 parts of a dispersion of 50% graphite in mineral spirits; 3.0 parts of methylphenyl silicone oil; 4.0 parts of titanium sulfate; 2.5 parts of migration inhibitor and 61 parts of water. This bath was padded onto glass fabric and was dried at 4500F. to give an add-on of dry coating equal to about 4.8% by weight based on the weight of the fabric.
(C) A bath was prepared by mixing 2.5 parts polyphenylene sulfide; 7.0 parts of a dispersion of 50% graphite in mineral spirits; 3.0 parts of methylphenyl silicone oil; 4.0 parts titanium sulfate; 2.5 parts migration inhibitor and 81 parts of water. This bath was padded onto glass fabric and the fabric dried at 450"F. A second bath was then prepared by mixing 7 parts of a dispersion of 57.2% of polytetrafluoroethylene; 6.1% of triethanolamine titanate and 36.7% water with 93 parts of water. This bath was applied to the fabric and the fabric was again dried at 450"F. The total add-on of coating was equal to 3.5% by weight based on the weight of the fabric.
(D) A bath was prepared by mixing 3 parts of a dispersion of 57.2% polytetrafluoroethylene; 6.1% triethanolamine titanate and 36.7% water; 2.5 parts polyphenylene sulfide; 3 parts of a dispersion of 50% graphite in mineral spirits; 4 parts titanium sulfate; 5 parts migration inhibitor; 1 part petroleum distillate; 0.5 parts of octylphenoxy polyethoxy ethanol wetting agent (Triton X-100); 3 parts ammonia; 1.5 parts methylphenyl silicone oil and 76.5 parts of water. The bath was applied to glass fabric and dried to give a total add-on of 2.9% by weight based on the weight of the fabric.
(t) A bath was prepared by mixing 4 parts of titanium sulfate, 2 parts of ammonia, 1.5 parts of methylphenyl silicone oil and 92.5 parts of water. This bath was padded onto glass fabric and the fabric dried at 300 F. A second bath was then padded onto the fabric which contained 2.5 parts of polyphenylene sulfide; 5.0 parts of migration inhibitor, 0.5 parts of Triton X-100; 1.5 parts of methylphenyl silicone oil; 3.0 parts of a dispersion of 57.2% polytetrafluoroethylene; 6.1%triethanolaminetitanate and 36.7% water; and 10.0 parts of a mixture containing 11% graphite in deionized water. The fabric was then dried again at 450 F. to give a total add-on of coating equal to 3.1% by weight based on the weight of the fabric.
CONTROL - A bath was prepared by mixing 25 parts of a dispersion containing 57.2% polytetrafluoroethylene, 6.1% triethanolamine titanate and 36.7% water with 75 parts of water. This bath was padded onto glass fabric and the fabric dried at 450 F. The add-on of dried coating was equal to about 15.3% by weight based on the weight of the fabric.
The acid resistance and abrasion resistance of the above samples are given in Table 1 and 2 respectively.
Table 1 includes the tensile strengths (fill direction) of the samples prior to heat and acid treatments (Column marked "No Acid") as well as the percent of tensile strength retained after each treatment (Column marked TABLE 1
Acid resistance (Fill Tensile)
Coating Original 61 1/2 hrs/550 F. 2 wks./550 F. 4 wks/550 F.
Sample add-on No acid 5 dips (%R) 5 dips (%R) 5 dips (%R) 5 dips (%R)
A 7.5% 82 41.3 (50.3) 89.3 (108.8) 72.6 (88.5) 100 (122)
B 4.8% 66 62.6 (94.8) 76.0 (115.2) 124 (187.9) 66 (100)
C 3.5% 86.6 74.0 (85.5) 79.3 (91.6) 80.6 (93.1) 74.6 (86.1)
D 2.9% 69.3 54.6 (78.8) 70.6 (101.9) 77.3 (115.5) 49.3 (71.1)
E 3.1% 72.0 34.6 (48.1) 46.6 (64.7) 62.6 (86.9) 68.0 (94.4)
Control 15.3% 85.4 2.0 (2.3) 3.3 (3.9) 26.3 (31.1) 6.6 (7.7) TABLE 2
Abrasion resistance
Flex test - cycles to failure - fill direction
Sample Original 161/2 hrs./550 F. 2wks./550 F. 4wks./550 F.
A 2900 1556 - 1551
B 2682 835 - 270
C 1811 1018 1920 1340
D 1971 1002 652 654
E 1148 - 1628 1526
Control 1879 412 109 181
It will be apparent that many modifications and variations may be effected without departing from the scope of the novel conception of the present invention, and the illustrative details disclosed are not to be construed as imposing undue limitations on the invention.
Claims (14)
1. Glass fabric having a coating thereon which improves its flex life and acid resistance, said coating comprising polytetrafluoroethylene, polyphenylene sulfide, a silicone oil and at least one water-insoluble product derived from a titanium compound selected from the group consisting of polyhydrolyzable organic titanates and water-soluble inorganic titanium salts.
2. A coated glass fabric as claimed in claim 1 wherein said coating comprises a water-insoluble product derived from titanium sulfate.
3. A coated glass fabric as claimed in claim 1 wherein said coating additionally includes graphite.
4. A coated glass fabric as claimed in claim 1 wherein the amount of said coating on said glass fabric is equal to about 1 to 10% by weight based on the weight of said glass fabric.
5. A coated glass fabric as claimed in claim 4 wherein said coating comprises at least 5% by weight of polytetrafluoroethylene, at least 4% by weight of polyphenylene sulfide, at least 2% by weight of silicone oil and at least 3% by weight of at least one water-insoluble product derived from a titanium compound selected from the group consisting of polyhydrolyzable organic titantes and water-soluble inorganic titanium salts.
6. An aqueous dispersion useful for improving the flex life and acid resistance of glass fabric, said aqueous dispersion comprising polytetrafluoroethylene, polyphenylene sulfide, at least one water-soluble titanium compound selected from the group consisting of polyhydrolyzable organic titanates and water-soluble inorganic titanium salts, a silicone oil and water.
7. An aqueous dispersion as claimed in claim 6 wherein at least a portion of said water-soluble titanium compound is titanium sulfate.
8. An aqueous dispersion as claimed in claim 6, additionally containing graphite.
9. An aqueous dispersion useful for improving the flex life and acid resistance of glass fabric, said aqueous dispersion comprising:
(a) about 0.5 to 15% by weight of polytetrafluoroethylene, (b) about 1 to 7 10% by weight of polyphenylene sulfide, (c) about 0.2 to 8 /o by weight of silicone oil, and
(d) about 0.5 to 15 ,O by weight of at least one titanium compound selected from the group consisting of water-soluble polyhydrolyzable organic titanates and water-soluble inorganic titanium salts.
10. An aqueous dispersion as claimed in claim 9 additionally containing graphite.
11. A process for improving the flex life and acid resistance of glass fabric comprising applying to said glass fabric an aqueous dispersion comprising polytetrafluoroethylene, polyphenylene sulfide, a silicone oil and a titanium compound selected from the group consisting of water-soluble polyhydrolyzable organic titanates and water-soluble inorganic titanium salts.
12. Glass fabric having a coating thereon substantially as described herein.
13. An aqueous dispersion as claimed in claim 6 substantially as described herein.
14. A process as claimed in claim 11 substantially as described herein with reference to the Example.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5787279A | 1979-07-16 | 1979-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2058109A true GB2058109A (en) | 1981-04-08 |
Family
ID=22013247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8021764A Withdrawn GB2058109A (en) | 1979-07-16 | 1980-07-02 | PTFE-containing finish for glass fabrics |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5617949A (en) |
| AU (1) | AU6013980A (en) |
| DE (1) | DE3026987A1 (en) |
| FR (1) | FR2466443A1 (en) |
| GB (1) | GB2058109A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3805570A1 (en) * | 1987-02-24 | 1988-09-01 | Aisin Seiki | ACCUMULATOR EXHAUST PLUG FILTER AND METHOD FOR THE PRODUCTION THEREOF |
| US4798863A (en) * | 1984-05-21 | 1989-01-17 | Phillips Petroleum Company | Zinc titanate in poly (arylene sulfide) compositions |
| EP0681013A3 (en) * | 1994-05-04 | 1996-01-03 | Lambda Srl | Water paints containing decomposable products for the non-stick coating of aluminium cookware. |
| GB2308598A (en) * | 1995-12-29 | 1997-07-02 | Shell Int Research | Dispersed polymer blend |
| CN104389178A (en) * | 2014-09-19 | 2015-03-04 | 太仓苏纶纺织化纤有限公司 | Modified polyphenylene sulfide/polytetrafluoroethylene layered coating method for basalt fiber filter material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404338A (en) * | 2019-08-29 | 2019-11-05 | 安徽元琛环保科技股份有限公司 | A kind of preparation method of organic substrate-Ceramic Composite film filtering material and filtrate obtained |
-
1980
- 1980-07-02 GB GB8021764A patent/GB2058109A/en not_active Withdrawn
- 1980-07-04 AU AU60139/80A patent/AU6013980A/en not_active Abandoned
- 1980-07-15 FR FR8015616A patent/FR2466443A1/en not_active Withdrawn
- 1980-07-16 JP JP9632180A patent/JPS5617949A/en active Pending
- 1980-07-16 DE DE19803026987 patent/DE3026987A1/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4798863A (en) * | 1984-05-21 | 1989-01-17 | Phillips Petroleum Company | Zinc titanate in poly (arylene sulfide) compositions |
| DE3805570A1 (en) * | 1987-02-24 | 1988-09-01 | Aisin Seiki | ACCUMULATOR EXHAUST PLUG FILTER AND METHOD FOR THE PRODUCTION THEREOF |
| GB2201679A (en) * | 1987-02-24 | 1988-09-07 | Aisin Seiki | Filter materials |
| US4885218A (en) * | 1987-02-24 | 1989-12-05 | Aisin Seiki Kabushiki Kaisha | Battery exhaust gas plug filter and process for manufacturing the same |
| GB2201679B (en) * | 1987-02-24 | 1990-11-07 | Aisin Seiki | Filter materials |
| EP0681013A3 (en) * | 1994-05-04 | 1996-01-03 | Lambda Srl | Water paints containing decomposable products for the non-stick coating of aluminium cookware. |
| GB2308598A (en) * | 1995-12-29 | 1997-07-02 | Shell Int Research | Dispersed polymer blend |
| CN104389178A (en) * | 2014-09-19 | 2015-03-04 | 太仓苏纶纺织化纤有限公司 | Modified polyphenylene sulfide/polytetrafluoroethylene layered coating method for basalt fiber filter material |
| CN104389178B (en) * | 2014-09-19 | 2016-09-07 | 太仓苏纶纺织化纤有限公司 | The modified polyphenyl thioether of a kind of basalt fibre filter material/polytetrafluoroethylene (PTFE) layered coated method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3026987A1 (en) | 1981-02-12 |
| AU6013980A (en) | 1981-01-22 |
| FR2466443A1 (en) | 1981-04-10 |
| JPS5617949A (en) | 1981-02-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |