EP0092917A1 - Spurted polyolefin fibers with improved dispersibility in hydrocarbons, including hydrocarbon containing asphalt compositions and method for making the same - Google Patents

Spurted polyolefin fibers with improved dispersibility in hydrocarbons, including hydrocarbon containing asphalt compositions and method for making the same Download PDF

Info

Publication number
EP0092917A1
EP0092917A1 EP83301843A EP83301843A EP0092917A1 EP 0092917 A1 EP0092917 A1 EP 0092917A1 EP 83301843 A EP83301843 A EP 83301843A EP 83301843 A EP83301843 A EP 83301843A EP 0092917 A1 EP0092917 A1 EP 0092917A1
Authority
EP
European Patent Office
Prior art keywords
pulp
spurted
spurted polyolefin
water dispersible
polyolefin pulp
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Withdrawn
Application number
EP83301843A
Other languages
German (de)
English (en)
French (fr)
Inventor
Harold Jabloner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hercules LLC
Original Assignee
Hercules LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hercules LLC filed Critical Hercules LLC
Publication of EP0092917A1 publication Critical patent/EP0092917A1/en
Withdrawn legal-status Critical Current

Links

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
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/20—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres
    • D21H5/202—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres polyolefins
    • 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
    • D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N5/00—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds

Definitions

  • This invention relates to spurted polyolefin pulp. More particularly, the invention relates to spurted polyolefin pulp having precipitated thereon a natural rubber or a synthetic resin.
  • the pulp is readily dispersible in organic media and is particularly useful as an additive to cutback asphalt compositions.
  • cutback asphalt compositions have long been used, primarily in the construction industry, as coatings and cements.
  • cutback asphalt compositions have a viscosity less than about 2,000 cps.
  • fibers in the compositions it has been desirable to include fibers in the compositions to thicken them while at the same time improving their rheology so as to permit ready spraying, brushing and trowelling. Asbestos has been particularly suitable as the fiber component of such asphalt compositions.
  • a cutback asphalt composition containing well dispersed polyolefin pulp comprising asphalt, a hydrocarbon solvent and spurted polyolefin pulp having precipitated thereon a natural rubber or a synthetic resin.
  • the pulp is readily dispersible in the cutback asphalt, remains well dispersed therein for several days and is easily redispersed using mild stirring if separation occurs after prolonged storage.
  • the composition has the desired rheological properties and, upon application, is resistant to cracking and to slumping.
  • the indicated pulp is prepared by adding water dispersible spurted polyolefin pulp in low concentration to water; agitating the resulting mixture to form an aqueous dispersion of the pulp; adding to the dispersion, with continued agitation, an anionic latex of a natural rubber or a synthetic resin; precipitating said natural rubber or synthetic resin onto the polyolefin pulp by adding to the agitated aqueous dispersion containing said pulp and said anionic latex an agent capable of precipitating an anionic latex, preferably a water-soluble calcium, barium, magnesium or aluminum salt or calcium or barium hydroxide and then isolating the treated pulp so formed from the aqueous dispersion.
  • an agent capable of precipitating an anionic latex preferably a water-soluble calcium, barium, magnesium or aluminum salt or calcium or barium hydroxide and then isolating the treated pulp so formed from the aqueous dispersion.
  • Ethanol refined spurted polypropylene pulp was made by placing into a Waring Blender, 2 liters of ethyl alcohol and 113.5 g of spurted polypropylene pulp. The pulp was refined for two minutes in the blender, filtered and allowed to dry at room temperature.
  • Water dispersible treated spurted polypropylene pulp was made by mixing 3.5 liters water and 56.75 g of a 1% aqueous solution of a cationic copolymer which was 66% by weight acrylamide and 34% by weight methacryloyloxyethyltrimethyl- ammonium methyl sulfate. The pH of the solution was adjusted to 10 with aqueous sodium hydroxide. Then 113.5 g of spurted polypropylene pulp was added and refined in a Waring Blender for one minute.
  • the water dispersible polypropylene pulp was latex treated by adding 10.99 g of a 51.6% emulsion of a carboxylated styrene-butadiene latex commercially available as Polysar XD 958, from Polysar Ltd. of Sarnia, Ontario, to the water dispersion. The mixture was beaten for 20 seconds.
  • Two asphalt cutback compositions were made. The first contained five grams of ethanol refined pulp in 400 g cutback asphalt. The second contained five grams latex treated pulp in 400 g of asphalt. For each composition the pulp was dispersed using a Hobart Planetary Mixer for 30 minutes. After dispersion the viscosity of each asphalt composition was measured using a Brookfield RVT model viscosmeter and a #6 spindle at 1 rpm. The composition containing the ethanol refined pulp had a viscosity of 28,000 cps while the latex treated pulp containing composition had a viscosity of 14,200 cps. Each composition was then placed in a metal can and aged at 66°C for three days. Examination after that time showed the latex treated pulp had only slightly separated from the cutback and was easily redispersed. The ethanol refined pulp was greatly separated and did not redisperse easily.
  • a solution was prepared containing 1.14 g of the cationic copolymer described in Example 1 dissolved in 20 liters of water at a pH of 10. The solution was circulated in a Sprout-Waldren single disc, 12 inch refiner equipped with D2A502 blades. Then 227 grams spurted polypropylene pulp was added and refined for 5 minutes at one mil blade clearance. This procedure was duplicated and the materials were combined. Pulp length was measured by Bauer McNett procedure essentially as described in TAPPI standard T233. The only change was a reduction in weight of pulp charged to 2 grams, which was necessitated by the lower density of the synthetic pulp.
  • the refined water dispersible pulp slurry was divided into eight 50 g. portions. To each portion was added a different latex as outlined in Table 1. The amount of latex added to each portion was chosen to give 10% by weight of latex solids based on the weight of the spurted polypropylene pulp. Each latex was then precipitated onto the pulp by slowly adding a 10% aqueous calcium hydroxide slurry. The amount of calcium hydroxide need to precipitate the latex was predetermined in the following manner: Each latex was added to sufficient water to make a 0.15% solids dispersion. 14 ml of each dispersion was then placed in three bottles.
  • the eight samples were dried at ambient conditions and each dispersed in an asphalt cutback at 1.25% pulp concentration.
  • the pulps were dispersed by mixing in a Hobart Planetary Mixer for 30 minutes.
  • the viscosities of the various samples are reported in Table 1.
  • Example 2 Five samples were made in the manner outlined in Example 2, except that the spurted polypropylene pulp was refined for 9 minutes at a 3 mil clearance. Each sample was prepared with 10% by weight of a different carboxylated styrene-butadiene latex. The particular latex used is shown in Table 2.
  • Each sample was used to make a different asphalt composition.
  • Each composition consisted of 1.5% by weight treated pulp and 98.5% asphalt cutback. Slump resistance of these formulations in asphalt cutback was determined by applying a 150 mil of the composition coat of the composition to a 15 pound roofing felt. The coating was allowed to dry for two days at room temperature and 8 hours at 150°F. The samples were rated as failing if any amount of asphalt dripped off.
  • Water dispersible spurted polypropylene pulp was prepared as outlined in Example 2. To three 227 g. portions of the pulp sufficient carboxylated styrene-butadiene latex, commercially available as Polysar XD-958, sold by Polysar Ltd., Sarnia, Ontario, was added so that there was 5% latex solids based on the weight of the pulps. The latex was then precipitated onto the pulp of each portion by use of a different precipitation agent. The precipitation agent used is outlined in Table 3. Finally, the pulp was filtered and dried.
  • carboxylated styrene-butadiene latex commercially available as Polysar XD-958, sold by Polysar Ltd., Sarnia, Ontario
  • the latex was then precipitated onto the pulp of each portion by use of a different precipitation agent.
  • the precipitation agent used is outlined in Table 3. Finally, the pulp was filtered and dried.
  • Each latex treated pulp was then added at 1.25% by weight to a cutback asphalt to form three different samples.
  • each of the cutback asphalt samples were placed in metal cans and after the first day, aged at 66°C.
  • the amount of pulp separation for the three cutback asphalt samples was determined after 1, 2, and 6 days. The results are shown in Table 3. The ratings are relative to one another; a rating of one indicated the best sample.
  • Example 2 Four samples containing latex treated spurted polypropylene pulp were made as outlined in Example 2 except for the refining. As shown in Table 4, the first sample was refined for 5 minutes at a 10 mil clearance after latex precipitation. The other three samples were refined for 5 minutes with a 10 mil clearance before the latex was added.
  • the pulps were wet lapped on the wet end of a Fourdrinier and dried.
  • a standard roof coating mix was made with 1.5% of the treated pulp and 98.5% dead level asphalt cutback by weight.
  • the cutback was 65% dead level asphalt and 35% mineral spirits.
  • the asphalt cutback had a Brookfield Viscosity of 1300 cps at 25°C (25 rpm, #3 spindle).
  • Using a Hobart Planetary Mixer the treated pulp was blended into the asphalt cutback in about 1/2 minute.
  • the mix was stirred for 10 minutes at. which time it had a smooth creamy, buttery consistency. Examination of a smear under a microscope slide showed a fine dispersion and only a hint of pulp grouping.
  • the mix toweled smoothly without lumps. The mixture poured smoothly and only showed slight floccing.
  • An aluminum roof coating was made by combining 520 grams, asphalt dead level cutback which had a viscosity of 1300 cps.; 40 grams, talc (5 micron size); 46 grams, talc (16 micron size); 10 grams of the treated pulp and 184 grams, Alcoa Aluminum Paste #6233, an aluminum flake pigment homogenously incorporated in a solvent such as mineral spirits.
  • the spurted polyolefin pulp immediately mixed into the cutback to give a smooth creamy mix. The total mix time was eleven minutes. The pulp was well dispersed. The mixture poured smoothly with only slight floccing.
  • the pulp was isolated and then dewatered to form wet lap.
  • the solids content of the wet lap was about 50 to 52% by weight and it was 10 to 12 mils thick.
  • the cutback asphalts used in accordance with this invention are well known in the art. They are formed by diluting asphalt to a liquid or semi-solid state using a petroleum thinner mainly composed of alphatic hydrocarbons, such as mineral spirits, either alone or in conjunction with a small amount of aromatic hydrocarbons, such as benzene, toluene or xylene, to assist in solubilizing the asphalt.
  • the asphalt component itself is a solid or semi-solid bitumen which can occur either naturally or can be obtained as a residue in the refining of petroleum.
  • the solids content of the cutback asphalts will ordinarily range from about 20 to about 70% by weight based on the total weight of the cutback composition.
  • spurted polyolefin pulps which can be used in accordance with this invention are polypropylene and polyethylene which are both commercially available. These pulps are generally treated so as to make them water dispersible before they are sold.
  • the spurted polyolefin pulps may be prepared by a process wherein the polyolefin is dispersed in a liquid which is not a solvent for the polyolefin at its normal boiling point, heating the resulting dispersion at superatmospheric pressure to dissolve the polymer and then discharging the resulting solution into a zone of reduced temperature and pressure to form the fibrous product.
  • the liquid in which the polyolefin is dispersed may be a halogenated hydrocarbon such as methylene chloride, chloroform or carbon tetrachloride; an aromatic hydrocarbon such as benzene, toluene or xylene; an aliphatic hydrocarbon such as pentane or hexane; or an alicyclic hydrocarbon such as cyclohexane.
  • a halogenated hydrocarbon such as methylene chloride, chloroform or carbon tetrachloride
  • an aromatic hydrocarbon such as benzene, toluene or xylene
  • an aliphatic hydrocarbon such as pentane or hexane
  • an alicyclic hydrocarbon such as cyclohexane.
  • the pressure generated by the solvent vapors may be augmented by a pressurized inert gas such as nitrogen or carbon dioxide.
  • the temperature to which the dispersion of the polyolefin in the solvent is heated to form a solution of the polyolefin will depend upon the particular solvent used but should be sufficiently high to effect dissolution of the polyolefin. Temperatures in the range of abut 100° to about 225°C ordinarily will be used, and the concentration of the polyolefin in the resulting solution normally will be from about 5 to about 40% by weight.
  • the pressure on the polyolefin solution may be from about 600 to about 1500 p.s.i., preferably from about 900 to about 1200 p.s.i.
  • the orifice through which the solution is discharged will have a diameter of from about 1/2 to about 15 mm and a length to diameter ratio of from about 1/5 to about 10 mm.
  • the polyolefin pulp shown in the examples are spurted polypropylene pulp. However, there may also be used spurted polyethylene pulp and spurted pulps prepared from copolymers of ethylene and propylene, copolymers of propylene and other 1-olefins such as 1-butene, 4-methyl-pentene-l and 1-hexene, and mixtures of any of the aforementioned polymers.
  • the pulp length distribution of the spurted polyolefin pulp plays an integral part in determining the viscosity of the cutback asphalt composition.
  • Fiber lengths are commonly reported in terms of their Bauer-McNett classification. Using this classification it is desirable that the pulp length distribution contain less than 2.5% pulps retained on a 24 mesh screen and at from about 10% to about 30% pulps retained on a 48 mesh screen. If the pulp is too short the viscosity of the asphalt composition is unacceptably low. If the pulp is too long the asphalt composition becomes lumpy and the pulp is hard to redisperse once they have separated from the cutback asphalt. It can be refined to the desired length by any of the methods known in the art. Typical of such refining methods is the use of a disc refiner.
  • the spurted polyolefin pulp can be made water dispersible by dispersing it in an aqueous solution containing a dispersing agent.
  • the dispersing agent may be cationic, anionic or nonionic.
  • Typical of applicable cationic dispersing agents are those formed by the copolymerization of from about 60 to about 85% by weight of an acrylamide having the formula: with from about 15 to about 40% by weight of an acrylate or methacrylate ester having the formula: The amount of each monomer is based on the total monomers charged.
  • R is hydrogen or methyl.
  • R' is hydrogen, methyl or ethyl.
  • R" is methyl or ethyl, at least one R" being methyl when X is the methyl sulfate anion.
  • X can be the chloride anion.
  • n is 1 to 4.
  • the pH of the aqueous solution containing them dissolved therein is adjusted to be in the range of from about 9.5 to about 12 either prior to, during or after contact of the polyolefin pulps with said solution.
  • a preferred dispersing agent is a cationic copolymer of acrylamide and a methacrylate ester; more specifically, it is a copolymer of acrylamide and methacryloyloxyethyltrimethyl- ammonium methyl sulfate (MTMMS).
  • MTMMS methacryloyloxyethyltrimethyl- ammonium methyl sulfate
  • operable cationic dispersing agents include the tetraalkylammonium halides such as dodecyltrimethylammonium chloride or bromide, tetradecyltrimethylammonium chloride, hexadecyltriethylammonium iodide and octadecyltri-n-butylammonium chloride.
  • anionic dispersing agents are the alkyl aryl sulfonates, such as sodium p-dodecylbenzene sulfonate, sodium isopropylnaphthalene sulfonate, sodium tetrahydronaphthalene sulfonate, sodium methylnaphthalene sulfonate, and the alkyl sulfates, such as sodium cetyl sulfate, ammonium lauryl sulfate and sodium tridecyl sulfate.
  • nonionic dispersing agents are the polyvinyl alcohols as well as the aryloxypoly(ethyleneoxy) alkanols, such as phenoxypenta(ethyleneoxy)ethanol, phenoxyocta-(ethyleneoxy)ethanol, phenoxydeca(ethyleneoxy)ethanol, 4-methylphenoxypenta(ethyleneoxy)ethanol and 2,3,6-triethyl- phenoxyhepta(ethyleneoxy)ethanol.
  • Related compounds containing both ethyleneoxy and propyleneoxy groups are also useful nonionic dispersing agents. All of the aforementioned dispersing agents are used in the amounts ordinarily required to provide an effective dispersion of pulps in an aqueous medium. Other methods of dispersion such as oxidation or ozonolysis of the spurted polyolefin pulp or addition of alkali treated water-soluble polymers containing quaternary ammonium groups will be known to those skilled in the art.
  • water dispersible spurted polyolefin pulp is obtained it is added to water and agitated to form an aqueous dispersion. Only a small amount, preferably up to about 3% pulp by weight, is added to the water. If too much pulp is added the dispersion becomes impossible to pump or stir.
  • the natural rubber of synthetic resins which are to be precipitated onto the spurted polyolefin pulp are added to the agitated dispersion as anionic latices. It is the swelling of the precipitated natural rubber or synthetic resin when exposed to the solvent used in a cut back asphalt which gives rises to the dispersibility of the spurted polyolefin pulp in the cutback asphalt. Consequently, it is important that the natural rubber or synthetic resin be one that swells, but is not dissolved, in the solvent used to form the cutback asphalt.
  • Suitable latices include those formed from natural rubber; butadiene-styrene rubber; neoprene; a carboxylated butadiene-styrene rubber such as a terpolymer containing butadiene, styrene and an anionic monomer such as acrylic or methacrylic acid; a butadiene-acrylonitrile rubber; polybutadiene rubber or polyisobutylene rubber.
  • the latex may also be formed from a polyacrylic or polymethacrylic acid ester.
  • the latices containing the resins are anionic. This can be achieved via the anionic nature of the resin itself, i.e. a resin containing carboxyl functionality such as a carboxylated butadiene-styrene rubber, or through the use of an anionic emulsifier. Being in such form, the elastomers readily precipitate onto the surface of the spurted polyolefin pulp when from about 1% to about 20%, preferably from about 2% to about 12%, by weight of a solid precipitating agent based on the weight of spurted polyolefin pulp is added to the dispersion. Methods of precipitating anionic latices are known to those skilled in the art.
  • Useful precipitating agents include water-soluble multivalent salts such as those of calcium, barium, magnesium, or aluminum or calcium or barium hydroxides.
  • Other exemplary precipitants include aluminum sulfate, alum (hydrated sodium aluminum sulfate), calcium nitrate and calcium bromide.
  • the pulp may be isolated from the dispersion by conventional means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP83301843A 1982-04-05 1983-03-31 Spurted polyolefin fibers with improved dispersibility in hydrocarbons, including hydrocarbon containing asphalt compositions and method for making the same Withdrawn EP0092917A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36571982A 1982-04-05 1982-04-05
US365719 1982-04-05

Publications (1)

Publication Number Publication Date
EP0092917A1 true EP0092917A1 (en) 1983-11-02

Family

ID=23440056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83301843A Withdrawn EP0092917A1 (en) 1982-04-05 1983-03-31 Spurted polyolefin fibers with improved dispersibility in hydrocarbons, including hydrocarbon containing asphalt compositions and method for making the same

Country Status (4)

Country Link
EP (1) EP0092917A1 (enrdf_load_stackoverflow)
JP (1) JPS58197379A (enrdf_load_stackoverflow)
KR (1) KR840004450A (enrdf_load_stackoverflow)
CA (1) CA1241476A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102995493A (zh) * 2012-10-31 2013-03-27 蚌埠首创滤清器有限公司 一种升降机滤清器用滤纸及其制备方法
CN114016190A (zh) * 2021-11-30 2022-02-08 高梵(浙江)信息技术有限公司 一种防辐射面料及其处理方法
CN114045594A (zh) * 2021-11-30 2022-02-15 高梵(浙江)信息技术有限公司 一种清凉透气型防辐射面料及其制备方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE184542T1 (de) * 1992-01-21 1999-10-15 Polyweave International Llc Wiederverwertbares, polymeres synthetisches papier sowie dessen herstellungsverfahren
CN102979004B (zh) * 2012-10-31 2014-11-26 蚌埠首创滤清器有限公司 一种负载氧化锆的滤清器滤纸及其制备方法
CN102979005B (zh) * 2012-10-31 2014-11-26 蚌埠首创滤清器有限公司 一种耐高温阻燃滤纸及其制备方法
CN102979006B (zh) * 2012-10-31 2014-11-26 蚌埠首创滤清器有限公司 一种含有改性纳米二氧化钛的滤清器滤纸及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413922A1 (de) * 1973-03-26 1974-10-17 Toray Industries Papier bildendes material und verfahren zu dessen herstellung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413922A1 (de) * 1973-03-26 1974-10-17 Toray Industries Papier bildendes material und verfahren zu dessen herstellung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102995493A (zh) * 2012-10-31 2013-03-27 蚌埠首创滤清器有限公司 一种升降机滤清器用滤纸及其制备方法
CN114016190A (zh) * 2021-11-30 2022-02-08 高梵(浙江)信息技术有限公司 一种防辐射面料及其处理方法
CN114045594A (zh) * 2021-11-30 2022-02-15 高梵(浙江)信息技术有限公司 一种清凉透气型防辐射面料及其制备方法

Also Published As

Publication number Publication date
JPH0323670B2 (enrdf_load_stackoverflow) 1991-03-29
CA1241476A (en) 1988-08-30
JPS58197379A (ja) 1983-11-17
KR840004450A (ko) 1984-10-15

Similar Documents

Publication Publication Date Title
US4738723A (en) Asbestos-free asphalt composition
AU710273B2 (en) Emulsifier system for rosin sizing agents
US4468254A (en) Wax emulsion
FI58507C (fi) Foer limning av papper avsett hartslimpreparat i form av en stabil vattensuspension och foerfarande foer dess framstaellning
JP2656156B2 (ja) 現場で安定化した組成物
EP0376684A2 (en) Process for preparing polymer emulsion particles having pores
JPH07502058A (ja) 水性分散体の製造方法
US4039492A (en) Synthetic fiber water base surface coating composition
EP0083984B1 (en) Preparation of stable aqueous dispersions of polyolefin fibres
CA1241476A (en) Spurted polyolefin fibers with improved dispersibility in hydrocarbons, including hydrocarbons containing asphalt compositions and method for making same
EP0278602A1 (en) Aqueous suspensions of calcium-containing fillers
DE2107287C3 (de) Verfahren zur Herstellung einer Papierstreichmasse
US4678823A (en) Asphalt compositions containing spurted polyolefin fibers with improved dispersibility in hydrocarbons
US3110604A (en) Paving composition and method of making it
US1956053A (en) Rubber-bonded asbestos product and method of making
NO139448B (no) Fremgangsmaate for fremstilling av en ikke-vevet bane av fibroest material
US2370057A (en) Finishing and dressing agents for fibrous materials
US2782169A (en) Continuous process for producing bituminous emulsions
EP0446391A1 (en) Bituminous binder compositions
US2687394A (en) Coated particles of calcium carbonate and method of making same
Fadat The influence of associative rheology modifiers on paper coating
DE19645732A1 (de) Pulverförmige Polymerzusammensetzungen
JP3229616B2 (ja) 巨大分子による非相溶性材料の安定化
US3622447A (en) Process for the manufacture of bonded fiber sheets
GB2151642A (en) Method of producing bituminous/polymer emulsion

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19840409

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850625

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JABLONER, HAROLD