US20170320975A1 - Synergistic visbreaking composition of peroxide and hydroxylamine ester for increasing the visbreaking efficiency - Google Patents

Synergistic visbreaking composition of peroxide and hydroxylamine ester for increasing the visbreaking efficiency Download PDF

Info

Publication number
US20170320975A1
US20170320975A1 US15/533,755 US201515533755A US2017320975A1 US 20170320975 A1 US20170320975 A1 US 20170320975A1 US 201515533755 A US201515533755 A US 201515533755A US 2017320975 A1 US2017320975 A1 US 2017320975A1
Authority
US
United States
Prior art keywords
peroxide
hydroxylamine ester
polypropylene
visbroken
visbreaking
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.)
Abandoned
Application number
US15/533,755
Other languages
English (en)
Inventor
Joachim Fiebig
Henk Van Paridon
Jingbo Wang
Markus Gahleitner
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.)
Borealis AG
Original Assignee
Borealis AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=52133861&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20170320975(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Borealis AG filed Critical Borealis AG
Assigned to BOREALIS AG reassignment BOREALIS AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FIEBIG, JOACHIM, GAHLEITNER, MARKUS, VAN PARIDON, HENK, WANG, JINGBO
Publication of US20170320975A1 publication Critical patent/US20170320975A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/50—Partial depolymerisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F10/04—Monomers containing three or four carbon atoms
    • C08F10/06—Propene
    • 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
    • C08K5/14—Peroxides
    • 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
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/17—Amines; Quaternary ammonium 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
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
    • C08K5/3432—Six-membered rings
    • C08K5/3435—Piperidines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C10G9/007—Visbreaking
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/02—Preparation of spinning solutions
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/544—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/14—Copolymers of polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/726—Fabrics
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
    • C08F2500/12—Melt flow index or melt flow ratio
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2810/00—Chemical modification of a polymer
    • C08F2810/10—Chemical modification of a polymer including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene

Definitions

  • the present invention is related to a synergistic visbreaking composition of peroxide and a hydroxylamine ester for increasing the visbreaking efficiency for polypropylene polymers at melt extrusion temperatures below 250° C. and its use in visbreaking polypropylene.
  • the present invention is furthermore related to the use of such visbroken polypropylene polymers for producing melt blown non-wovens with improved barrier properties.
  • polyolefin grades polymer types having different molar masses, melt viscosities, densities, molar mass distributions, etc.
  • customary compounding methods for example by extrusion or injection moulding, is a routine process employed by polymer manufacturers and polymer processors/compounders.
  • the setting of the desired parameters, for example the melt viscosity, by means of this polymer process step is critically dependent on the controlled reactivity and mode of action of the additives employed.
  • reaction of a polymer of the polypropylene type with a free-radical former during a polymer-processing process generally results in the degradation of the polymer, whereas polymers of the polyethylene type tend to crosslink.
  • PP polypropylene
  • reactor grades specific PP grades are obtainable by optimisation of the synthesis process or the catalyst systems (metallocene catalyst, Ziegler catalyst), standard PP grades are frequently modified in process technology by means of a processing step following the synthesis.
  • Known degradation processes proceed either thermally, in particular at temperatures above 280° C., or in the presence of free-radical generators.
  • the free-radical induced process is carried out in extruders or injection-moulding machines at temperatures above 180° C.
  • Free-radical generators used are organic peroxides, which are added during the processing step in diluted form (PP Mastermix, diluted in oil, stabilized on inorganic supports) or directly as a liquid. Under the given processing conditions, the peroxide disintegrates into free radicals, which initiate the chain cleavage reactions and form polymers having the desired rheological properties (melt viscosities).
  • the degradation of a PP to form a product having a lower molecular weight (higher melt flow rate (MFR)) and most importantly, a lower melt viscosity is generally referred to as a viscosity-breaking or vis-breaking process.
  • CR-PP grades are mainly used for film, fibre applications and injection-moulding applications in which low melt viscosities are a prerequisite for economical processing.
  • a wide range of melt viscosities or molecular weights is nowadays required in process technology.
  • a further parameter that influences the processing behaviour of the polymer, in addition to the molecular weight, is the molecular weight distribution (MWD). While polymer grades having broad MWDs display improved orientation behaviour of the polymer chains, at low pull-off speeds in a fibre spinning process, the reverse is the case for high putt off speeds and broad MWDs. For this reason, narrow MWDs are essential at high pull-off speeds in order to achieve improved continuity in the spinning process.
  • WO 97/49737 describes a process for reducing the molecular weight of polymers at temperatures above 280° C. using so-called NOR-HALS (HALS: Hindered Amino Light Stabilisers) compounds containing the group:
  • G is hydrogen or methyl and G1 and G2 are each hydrogen, methyl or are together oxo.
  • WO 01/90113 discloses a process for reducing the molecular weight of polypropylene, propylene copolymers or polypropylene blends, wherein a hydroxylamine ester of the formula:
  • Ra′ is a monoacyl radical and R1-R4 are alkyl-substituents; is added to the polypropylene polymers to be degraded, and the mixture is heated to temperatures below 280° C.
  • any hydroxylamine ester known in the art for reducing the molecular weight of, or viscosity breaking, polyolefin compounds, particularly propylene polymers can be used. It is referred to WO 01/90113, where such suitable hydroxylamine esters are generally described. Furthermore it is stated that a preferable hydroxylamine ester is Irgatec® CR76, sold commercially by Ciba Speciality Chemicals Corporation (now by BASF). The degraded polypropylene is used for non-woven filter elements.
  • Irgatec® CR76 shows equivalent visbreaking performance as a peroxide at a melt extrusion temperature of 250° C. Only at higher temperatures, like from 270° C. on, especially from 280° C. on, the performance of Irgatec® CR76 becomes better than the performance of the peroxide.
  • EP 1 282 630 describes the use of hydroxylamine esters for the controlled degradation of polypropylene, wherein the hydroxylamine ester has the formula
  • Ra′ is a monoacyl or diacyl radical
  • R1-R4 are each C1-C6alkyl
  • R5 and R6 are each, independently of one another, hydrogen, C1-C6alkyl or C6-C10 aryl; or
  • R5 and R6 are together oxygen. It is stated in EP 1 282 630 that in a specific embodiment, further sources of free radicals, e.g. a suitable bisazo compound, a peroxide or a hydroperoxide, in addition to the hydroxylamine esters (I) can be added to the polymers to be degraded.
  • a suitable bisazo compound, a peroxide or a hydroperoxide in addition to the hydroxylamine esters (I) can be added to the polymers to be degraded.
  • the use of two free radical sources is shown in the examples only for a sequential degradation of polypropylene (2 extrusion steps) using a hydroxylamine ester together with DTBPH (2,5-bis-tert-butylperoxy-2,5-dimethylhexane).
  • EP 1 282 630 does not show any effect of the use of this combination.
  • EP 1 786 861 discloses that the use of hydroxylamine esters as described in WO 01/90113, especially a hydroxylamine ester of formula
  • Thio-Compound 1 (Thio-1”) of formula
  • the present invention relates in a first aspect to a synergistic visbreaking composition of peroxide and a hydroxylamine ester for increasing the visbreaking efficiency for polypropylene polymers at melt extrusion temperatures below 250° C., comprising peroxide (i) and hydroxylamine ester (ii) in a range of from 1 wt % (i):99 wt % (ii) to 99 wt % (i): 1 wt % (ii), whereby peroxide (i) and hydroxylamine ester (ii) are to be added as mixture or as individual components to the polypropylene to be visbroken.
  • the present invention is related to the use of a such a composition comprising a peroxide (i) and a hydroxylamine ester (ii) for increasing the melt flow rate MFR 2 (230° C./2.16 kg) measured according to ISO 1133 of polypropylene polymers at melt extrusion temperatures below 250° C.
  • the present invention is related to a method for increasing the visbreaking efficiency for polypropylene polymers at melt extrusion temperatures below 250° C. by adding the synergistic visbreaking composition of peroxide (i) and a hydroxylamine ester(ii) to the polypropylene polymer to be visbroken.
  • the present invention is related to the use of polypropylene polymers being visbroken with the synergistic visbreaking composition for producing melt blown non-wovens with improved barrier properties.
  • the synergistic visbreaking composition according to the present invention contains peroxide (i) and a hydroxylamine ester (ii).
  • Typical peroxide visbreaking agents are 2,5-dimethyl-2,5-bis(tert.butyl-peroxy)hexane (DHBP) (for instance sold under the tradenames Luperox 101 and Trigonox 101), 2,5-dimethyl-2,5-bis(tert.butyl-peroxy)hexyne-3 (DYBP) (for instance sold under the tradenames Luperox 130 and Trigonox 145), dicumyl-peroxide (DCUP) (for instance sold under the tradenames Luperox DC and Perkadox BC), di-tert.butyl-peroxide (DTBP) (for instance sold under the tradenames Trigonox B and Luperox Di), tert.butyl-cumyl-peroxide (BCUP) (for instance sold under the tradenames Trigonox T and Luperox 801) and bis (tert.butylperoxy-isopropyl)benzene (DIPP) (for instance sold under the tradenames Perkadox 14S
  • Preferred peroxides are 5-dimethyl-2,5-bis(tert.butyl-peroxy)hexane (DHBP) and tert.butyl-cumyl-peroxide (BCUP)
  • the peroxide may be part of a masterbatch.
  • masterbatch means a concentrated premix of a propylene polymer with a free radical forming agent (peroxide).
  • the peroxide compound may preferably be contained in the peroxide masterbatch composition in a range of from 1 to 50 wt %, like from 5 to 40 wt %, based on the total composition of the masterbatch.
  • Suitable hydroxylamine esters are selected from the group of hydroxylamine esters known in the state of the art, like for example those disclosed in WO 01/90113.
  • One commercially available suitable hydroxylamine ester is for example Irgatec® CR76, sold commercially by BASF.
  • Preferred hydroxylamine esters (ii) are compounds of the formula
  • R a represents acyl
  • R b and R c represents hydrogen and the other one represents a substituent
  • R b and R c both represent hydrogen or identical or different substituents
  • R b and R c together represent oxygen
  • R 1 -R 4 each represent C 1 -C 6 alkyl
  • R 5 and R 6 each represent independently of one another hydrogen, C 1 -C 6 alkyl or C 6 -C 10 aryl; or R 5 and R 6 together represent oxygen.
  • acyl with regard to the definition of R a preferably represents an acyl radical selected from the group consisting of —C( ⁇ O)—H, —C( ⁇ O)—C 1 -C 19 alkyl, —C( ⁇ O)—C 2 -C 19 alkenyl, —C( ⁇ O)—C 2 -C 4 alkenyl-C 4 -C 10 aryl, —C( ⁇ O)—C 6 -C 10 aryl, —C( ⁇ O)—O—C 1 -C 6 alkyl, —C( ⁇ O)—O—C 6 -C 10 aryl, —C( ⁇ O)—NH—C 1 -C 6 alkyl, —C( ⁇ O)—NHC 6 -C 10 aryl and —C( ⁇ O)—N(C 1 -C 6 alkyl) 2 ;
  • C 1 -C 19 alkyl in the acyl group R a is, for example, C 1 -C 6 alkyl, e.g. methyl, ethyl, n-propyl or isopropyl or n-, sec- or tert-butyl or straight-chain or branched pentyl or hexyl, or C 7 -C 19 alkyl, e.g.
  • C 6 -C 10 aryl is, for example, carbocyclic monoaryl or diaryl, preferably monoaryl, e.g. phenyl, which may be monosubstituted or disubstituted by suitable substituents, e.g. C 1 -C 4 alkyl, e.g. methyl, ethyl or tert-butyl, alkoxy, e.g. methoxy or ethoxy, or halogen, e.g. chlorine.
  • the 2- and 6-positions are preferred.
  • acyl radical Ra may be substituted on the free valences by suitable substituents, e.g. fluorine or chlorine, and is preferably formyl, acetyl, trifluoroacetyl, pivaloyl, acryloyl, methacryloyl, oleoyl, cinnamoyl, benzoyl, 2,6-xyloyl, tert-butoxycarbonyl, ethylcarbmoyl or phenylcarbamoyl.
  • suitable substituents e.g. fluorine or chlorine
  • C 1 -C 6 alkyl as R 1 -R 4 is preferably C 1 -C 4 alkyl, in particular C 1 -C 2 alkyl, e.g. methyl or ethyl.
  • R 1 -R 4 are methyl or ethyl. Alternatively, from one to three substituents R 1 -R 4 are ethyl. The remaining substituents are then methyl.
  • R 5 and R 6 are preferably hydrogen.
  • C 1 -C 6 alkyl or C 6 -C 10 aryl as R 5 and R 6 are preferably methyl or phenyl.
  • the hydroxylamine esters (I) are known or can be prepared by known methods, e.g. by acylation of the corresponding >N—OH compound in a customary esterification reaction with an acid R a —OH that introduces the group R a and corresponds to an acyl group selected, for example, from the group consisting of —C( ⁇ O)—H, —C( ⁇ O)—C 1 -C 19 alkyl, —C( ⁇ O)—C 2 -C 19 alkenyl, —C( ⁇ O)—C 2 -C 4 alkenyl-C 6 -C 10 aryl, —C( ⁇ O)—C 6 -C 10 aryl, —C( ⁇ O)—O—C 1 -C 6 alkyl, —C( ⁇ O)—O—C 6 -C 10 aryl, —C( ⁇ O)—NH—C 1 -C 6 alkyl, —C( ⁇ O)—NH—C 6 -C 10
  • a preferred hydroxylamine ester (I) is selected from the group consisting of sterically hindered amine derivatives of the formula:
  • R 1 ′ and R 2 ′ independently of one another represent hydrogen or methyl
  • R a represents C 1 -C 8 alkanoyl
  • R a ′ represents C 8 -C 22 alkanoyl.
  • hydroxylamine ester (I) is selected from the group consisting of sterically hindered amine derivatives of the formula:
  • a compound of the above formula in which the alkylgroup is a C 17 -group.
  • Such a compound is commercially available under the tradename Irgatec® CR76.
  • the hydroxylamine ester can also be added in the form of a masterbatch containing these compounds in a polymer matrix in a concentration of, for example, from about 1 to 50% by weight, preferably from 2 to 10% by weight.
  • the synergistic visbreaking agent composition of the present invention contains peroxide (i) and a hydroxylamine ester (ii) in a range of from 1 wt % (i):99 wt % (ii) to 99 wt % (i):1 wt % (ii), preferably in the range of 20 wt % (i):80 wt % (ii) to 95 wt % (i):5 wt % (ii), more preferably in the range of 25 wt % (i):75 wt % (ii) to 90 wt % (i): 10 wt % (ii), even more preferably in the range of 30 wt % (i):70 wt % (ii) to 85 wt % i):15 wt % (ii) and most preferably in the range of 50 wt % (i):50 wt % (ii) to 85
  • the weight percentages are related to the pure compounds (i) and (ii).
  • the peroxide and the hydroxylamine ester can be used directly as mixture or the two components of the composition can be added separately to the to be visbroken polypropylene polymer.
  • the peroxide and the hydroxylamine ester are added to the to be visbroken polypropylene polymer directly as a mixture.
  • the hydroxylamine ester is added in the form of a masterbatch and the peroxide in pure form.
  • the peroxide as well as the hydroxylamine ester is added in the form of a masterbatch.
  • the polypropylene polymers to be visbroken can encompass propylene homopolymers, propylene random copolymers and polypropylene blends.
  • Propylene random copolymers comprise one or two comonomers in various proportions up to 20 wt %, preferably up to 10 wt %, of total content of comonomers.
  • comonomers are: olefins such as 1-olefins, e.g. ethylene, 1-butene, 1-pentene, 1-hexene, 1-heptene or 1-octene, isobutylene, cycloolefins, e.g.
  • cyclopentene cyclohexene, norbornene or ethylidenenorbome
  • dienes such as butadiene, isoprene, 1,4-hexadiene, cyclopentadiene, dicyclopentadiene or norbornadiene; also acrylic acid derivatives and unsaturated carboxylic anhydrides such as maleic anhydride.
  • Preferred comonomers are ethylene, 1-butene, 1-hexene and 1-octene.
  • Polypropylene blends which can be used are mixtures of polypropylene with polyolefins, preferably with polypropylene based polymers.
  • propylene homopolymers or propylene random copolymers are used as starting material, more preferably only propylene homopolymers are used.
  • polypropylene, propylene copolymers or polypropylene blend can be carried out in all customary mixing machines in which the polymer is melted and mixed with the additives. Suitable machines are known to those skilled in the art. They are predominantly mixers, kneaders and extruders.
  • the process is preferably carried out in an extruder by introducing the synergistic visbreaking agent composition during processing.
  • Particularly preferred processing machines are single-screw extruders, contra-rotating and co-rotating twin-screw extruders, planetary-gear extruders, ring extruders or co-kneaders. It is also possible to use processing machines provided with at least one gas removal compartment to which a vacuum can be applied.
  • compositions comprising peroxide (i) and hydroxylamine ester (ii) are added to the to be visbroken propylene polymer in concentrations, based on the amount of polymer to be visbroken, of from about 0.001 to 5.0% by weight, in particular from 0.01 to 2.0% by weight and particularly preferably from 0.02 to 1.0% by weight.
  • the peroxide (i) and the hydroxylamine ester ii) can be added as individual compounds or as mixtures to the polymer to be visbroken.
  • antioxidants In addition to the synergistic visbreaking agent composition selected antioxidants, acid scavengers and/or processing stabilizers or mixtures of these may be added to the to be visbroken propylene polymer in small amounts of up to 3.0 wt %, preferably up to 1.5 wt %, more preferably up to 1.0 wt % based on the polypropylene polymer at the most. For additive, typical we add max. 1 wt % to total
  • antioxidants examples are:
  • Pentaerythrityl tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) (Irganox® 1010), octadecyl-3-(3,5-di-tertbutyl-4-hydroxyphenyl)propionate) (IRGANOX 1076), 3,3′,3′,5,5′,5′-hexa-tert-butyl- ⁇ , ⁇ ′, ⁇ ′-(mesitylene-2,4,6-triyl) tri-p-cresol (IRGANOX 1330), calcium diethyl bis(((3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)methyl)phosphonate) (IRGANOX 1425), 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)trione (IRGANO
  • Suitable acid scavengers are for example calcium stearate, zinc stearate, hydrotalcites or calcium lactate or calcium lactylate from Patco (Pationic®)
  • the polypropylene polymers are visbroken at elevated temperatures, but still below a melt extrusion temperatures of below 250° C., preferably at a melt extrusion temperature from 160° C. to below 250° C. and more preferably from 200° C. to 245° C.
  • the period of time necessary for degradation can vary as a function of the temperature, the amount of material to be degraded and the type of, for example, extruder used.
  • the synergistic visbreaking agent composition increases the visbreaking efficiency compared to the use of the individual components as is shown in the experimental part. It is shown that the molecular weight reduction effect is higher than expected, indicating a synergism between the two radical generating agents.
  • a further aspect of the present invention is the use of such a composition comprising a peroxide (i) and a hydroxylamine ester (ii) for increasing the melt flow rate MFR 2 (230° C./2.16 kg) measured according to ISO 1133 of polypropylene polymers at melt extrusion temperatures below 250° C.
  • the present invention is related to a method for increasing the visbreaking efficiency for polypropylene polymers at melt extrusion temperatures below 250° C. by adding the synergistic visbreaking composition of peroxide (i) and a hydroxylamine ester(ii) to the polypropylene polymer to be visbroken.
  • the present invention is related to the use of polypropylene polymers being visbroken with the synergistic visbreaking composition for producing melt blown non-wovens with improved barrier properties.
  • melt blown non-wovens produced from a polypropylene polymer being visbroken with the synergistic visbreaking composition shows increased barrier properties compared to polypropylene polymers being visbroken either by the use of peroxide or by the use of hydroxylamine ester alone.
  • the increased barrier properties are shown by a higher hydrohead value (3rd drop, cm H2O resp. mbar), measured according to standard test WSP 80.6 (09).
  • the present invention is also directed to an article selected from the group consisting of filtration media (filter), diapers, sanitary napkins, panty liners, incontinence products for adults, protective clothing, surgical drapes, surgical gown, and surgical wear in general, comprising the melt-blown non-wovens, preferably in an amount of at least 80.0 wt %, more preferably in an amount of at least 95.0 wt %, based on the total weight of the article.
  • the article consists of the melt-blown non-woven.
  • the total MFR of the composition visbroken with peroxide and hydroxylamine follows the additive law, the total MFR will be the sum of the MFR(peroxide)+MFR (hydroxylamine).
  • the calculated MFR is the sum of MFR of material visbroken only with peroxide and the MFR of material visbroken only with hydroxylamine ester, which have been measured (see also FIG. 1 )
  • MFR 2 (230° C.) is measured according to ISO 1133 (230° C., 2.16 kg load).
  • the MFR 2 of the polypropylene composition is determined on the granules of the material, while the MFR 2 of the melt-blown web is determined on cut pieces of a compression-molded plaque prepared from the web in a heated press at a temperature of not more than 200° C., said pieces having a dimension which is comparable to the granule dimension.
  • the hydrohead or water resistance as determined by a hydrostatic pressure test is determined according to the WSP (worldwide strategic partners) standard test WSP 80.6 (09) as published in December 2009. This industry standard is in turn based on ISO 811:1981 and uses specimens of 100 cm 2 at 23° C. with purified water as test liquid and a rate of increase of the water pressure of 10 cm/min. An H 2 O column height of X cm in this test corresponds to a pressure difference of X mbar.
  • Air filtration efficiency was determined based on EN 1822-3 for flat sheet filter media, using a test filter area of 400 cm 2 .
  • the particle retention was tested with a usual aerosol of di-ethyl-hexyl-sebacate (DEHS), calculating efficiency for the fraction with 0.4 ⁇ m diameter from a class analysis with 0.1 ⁇ m scale.
  • An airflow of 16 m 3 ⁇ h ⁇ was used, corresponding to an airspeed of 0.11 m ⁇ s ⁇ .
  • PP-Homo-1 HC001A-B1: propylene homopolymer with a density of 905 kg/m 3 and an MFR (2.16 kg, 230° C.) of ⁇ 3.7 g/10 min. It is distributed by Borealis.
  • PP-Homo-2 HJ120UB: propylene homopolymer of Borealis with an MFR 2 (2.16 kg, 230° C.) of 75 g/10 min, and a density of 0.905 g/cm
  • PP-Homo-3 HD120MO: propylene homopolymer of Borealis with an MFR 2 (2.16 kg, 230° C.) of 9 g/10 min and a density of 0.905 g/cm
  • Antioxidant (AO) Irganox 1010 (FF) provided by BASF
  • Acid Scavenger Calcium stearate provided by Faci.
  • PDX peroxide pure: 2,5-dimethyl-2,5-bis(tert.butyl-peroxy)hexane (DHBP) (CAS No. 78-63-7; sold under trade nameTrigonox 101 from AkzoNobel, NL)
  • DHBP 2,5-dimethyl-2,5-bis(tert.butyl-peroxy)hexane
  • PDX PP5% ig Masterbatch 5% in PP: DHBP-5-ICS produced by United Initiators.
  • Thio-Compound 1 1-Octadecanethiol, CAS NO. 2885-00-9, assay 98% was purchased from Sigma Aldrich and used as it is.
  • X wt % PP-Homo-1 were mixed with 0.1 wt % Irganox 1010 (FF), 0.05 wt % Calcium stearate (CAS No. 1592-23-0) y wt % Peroxide Masterbatch and z wt % Irgatec ® CR 76 Masterbatch by using extruder ZSK 18 at 240° C., with a throughput of 7 kg/h.
  • FF Irganox 1010
  • CAS No. 1592-23-0 0.05 wt % Calcium stearate
  • y wt % Peroxide Masterbatch y wt % Peroxide Masterbatch
  • z wt % Irgatec ® CR 76 Masterbatch by using extruder ZSK 18 at 240° C., with a throughput of 7 kg/h.
  • Table 2 shows the calculated MFR 2 (2.16 kg, 230° C.) that has been expected compared to the real MFR 2 (2.16 kg, 230° C.)
  • FIG. 1 shows the MFR 2 values for the addition of only PDX PP5% ig or only Irgatec® MB
  • FIG. 2 shows the calculated MFR 2 values vs. the real MFR 2 values for 1.6 wt % of total visbreaking agent minus the wt % of PDX (peroxide) used.
  • PP-homo-2 was mixed with 0.1wt % Irganox 1010 (FF) and 0.05 wt % Calcium stearate (CAS No. 1592-23-0).
  • PP-homo-2 has been visbroken by using a co-rotating twin-screw extruder at 240° C. and using 1700 ppm pure PDX (Trigonox 101) to achieve the target MFR 2 of 800 g/10 min for CE6.
  • IE4 1.1 wt % of Irgatec® CR76 MB and 300 ppm pure PDX (Trigonox 101) was used to achieve the target MFR 2 of 800 g/10 min.
  • the polypropylene compositions of IE4, CE6 and CE7 have been converted into melt-blown non-woven webs on a Reicofil MB250 line using a spinneret having 470 holes of 0.4 mm exit diameter and 35 holes per inch. Webs were produced at different melt temperatures, throughputs, DCD (die to collector distance) and air volumes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Artificial Filaments (AREA)
  • Nonwoven Fabrics (AREA)
US15/533,755 2014-12-15 2015-12-14 Synergistic visbreaking composition of peroxide and hydroxylamine ester for increasing the visbreaking efficiency Abandoned US20170320975A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP14197888.2A EP3034552B1 (en) 2014-12-15 2014-12-15 Synergistic visbreaking composition of peroxide and hydroxylamine ester for increasing the visbreaking efficiency
EP14197888.2 2014-12-15
PCT/EP2015/079530 WO2016096687A1 (en) 2014-12-15 2015-12-14 Synergistic visbreaking composition of peroxide and hydroxylamine ester for increasing the visbreaking efficiency

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/079530 A-371-Of-International WO2016096687A1 (en) 2014-12-15 2015-12-14 Synergistic visbreaking composition of peroxide and hydroxylamine ester for increasing the visbreaking efficiency

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/658,366 Division US10982022B2 (en) 2014-12-15 2019-10-21 Method of forming melt-blown non-wovens

Publications (1)

Publication Number Publication Date
US20170320975A1 true US20170320975A1 (en) 2017-11-09

Family

ID=52133861

Family Applications (2)

Application Number Title Priority Date Filing Date
US15/533,755 Abandoned US20170320975A1 (en) 2014-12-15 2015-12-14 Synergistic visbreaking composition of peroxide and hydroxylamine ester for increasing the visbreaking efficiency
US16/658,366 Active US10982022B2 (en) 2014-12-15 2019-10-21 Method of forming melt-blown non-wovens

Family Applications After (1)

Application Number Title Priority Date Filing Date
US16/658,366 Active US10982022B2 (en) 2014-12-15 2019-10-21 Method of forming melt-blown non-wovens

Country Status (12)

Country Link
US (2) US20170320975A1 (da)
EP (1) EP3034552B1 (da)
KR (1) KR101846805B1 (da)
CN (1) CN107001503A (da)
BR (1) BR112017011886B1 (da)
DK (1) DK3034552T3 (da)
ES (1) ES2710998T3 (da)
IL (1) IL252747A (da)
MY (1) MY184039A (da)
RU (1) RU2661868C1 (da)
TW (1) TWI606086B (da)
WO (1) WO2016096687A1 (da)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022101683A1 (en) * 2020-11-13 2022-05-19 Braskem S.A. Processing of polypropylene and products therefrom
US11993699B2 (en) * 2018-09-14 2024-05-28 Fina Technology, Inc. Polyethylene and controlled rheology polypropylene polymer blends and methods of use

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670547B1 (en) 2018-12-21 2023-06-07 Borealis AG Polypropylene composition for film sealing layer
US20230025875A1 (en) * 2019-12-04 2023-01-26 Borealis Ag Light weight melt blown webs with improved barrier properties
CN114729482B (zh) * 2019-12-04 2024-01-02 博里利斯股份公司 由具有改善的过滤性能的熔喷纤维制成的过滤介质
WO2021170615A1 (en) * 2020-02-26 2021-09-02 Basf Se Additive mixtures for rheology modification of polymers
EP4222183A1 (en) 2020-09-30 2023-08-09 Borealis AG Process for recycling propylene-ethylene copolymers
CN116724153A (zh) * 2020-12-08 2023-09-08 Sabic环球技术有限责任公司 由聚丙烯制造的熔喷网
CN112522859A (zh) * 2020-12-30 2021-03-19 宿迁市美达净化科技有限公司 一种抗菌聚丙烯熔喷非织造材料的制备方法
WO2024052176A1 (en) * 2022-09-07 2024-03-14 Basf Se Rheology modifying of polymers with a radical initiator and thiourethane

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030216494A1 (en) * 2000-05-19 2003-11-20 Michael Roth Hydroxylamine esters as polymerization initiators
US20040265509A1 (en) * 2001-09-25 2004-12-30 Michael Roth Crosslinking of unsaturated polymers by the use of hydroxylamine-esters
US20070200272A1 (en) * 2006-02-24 2007-08-30 Horst David E Viscosity breaking process for olefin polymers
US20080045662A1 (en) * 2004-09-09 2008-02-21 Michael Roth Degradation of Polypropylene with Hydroxylamine Ester Compositions
US20080199673A1 (en) * 2005-08-19 2008-08-21 Allgeuer Thomas T Propylene Based Meltblown Nonwoven Layers and Composite Structures

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE195745T1 (de) 1996-06-26 2000-09-15 Ciba Sc Holding Ag Abbau von polymeren durch nor-hals-verbindungen
JP2001119799A (ja) 1999-10-18 2001-04-27 Phone Or Ltd マイクロフォン
CN1302002C (zh) 2000-05-19 2007-02-28 西巴特殊化学品控股有限公司 作为聚合引发剂的羟胺酯类
AU2001235686A1 (en) * 2000-09-22 2002-04-02 Atofina Peroxide degradation of polymers in the presence of multifunctional stable free radicals
DE602004001517T2 (de) * 2003-03-12 2006-12-28 Ciba Speciality Chemicals Holding Inc. Hydroxylaminester enthaltende beschichtungszusammensetzung
CN101432319B (zh) * 2006-04-26 2012-10-03 埃克森美孚化学专利公司 颗粒状聚合物产品及其制备方法
EP2014707B1 (en) * 2007-07-12 2014-04-23 Borealis Technology Oy Modified polymer compositions, modification process and free radical generating agents for i.a. wire and cable applications
DE102007049190B4 (de) 2007-10-13 2014-10-02 Rehau Ag + Co. Verfahren zur Herstellung und Verwendung thermoplastischer Elastomere
US9168718B2 (en) * 2009-04-21 2015-10-27 Exxonmobil Chemical Patents Inc. Method for producing temperature resistant nonwovens
WO2010151508A1 (en) * 2009-06-23 2010-12-29 Dow Global Technologies Inc. Controlled-rheology polypropylene
DK2529044T3 (da) 2010-01-28 2014-05-12 Borealis Ag Smelteblæst fiber
JP5405675B2 (ja) * 2010-03-12 2014-02-05 エクソンモービル・ケミカル・パテンツ・インク 弾性メルトブロー積層体構造体およびこれを作製するための方法
KR20140058748A (ko) * 2012-11-05 2014-05-15 주식회사 만텍 과산화물 마스터배치 생산 기술 및 이를 이용한 폴리프로필렌 개질 방법
WO2015112844A1 (en) * 2014-01-24 2015-07-30 Fitesa Simpsonville, Inc. Meltblown nonwoven web comprising reclaimed polypropylene component and reclaimed sustainable polymer component and method of making same field

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030216494A1 (en) * 2000-05-19 2003-11-20 Michael Roth Hydroxylamine esters as polymerization initiators
US20040265509A1 (en) * 2001-09-25 2004-12-30 Michael Roth Crosslinking of unsaturated polymers by the use of hydroxylamine-esters
US20080045662A1 (en) * 2004-09-09 2008-02-21 Michael Roth Degradation of Polypropylene with Hydroxylamine Ester Compositions
US20080199673A1 (en) * 2005-08-19 2008-08-21 Allgeuer Thomas T Propylene Based Meltblown Nonwoven Layers and Composite Structures
US20070200272A1 (en) * 2006-02-24 2007-08-30 Horst David E Viscosity breaking process for olefin polymers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Pure, Definition of Pure by Merriam-Webster, http://www.merriam-webster.com/dictionary/pure, retrieved 15March2019. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11993699B2 (en) * 2018-09-14 2024-05-28 Fina Technology, Inc. Polyethylene and controlled rheology polypropylene polymer blends and methods of use
WO2022101683A1 (en) * 2020-11-13 2022-05-19 Braskem S.A. Processing of polypropylene and products therefrom
US20220153976A1 (en) * 2020-11-13 2022-05-19 Braskem S.A. Processing of polypropylene and products therefrom
US20220153883A1 (en) * 2020-11-13 2022-05-19 Braskem S.A. Processing of polyethylene-based compositions and products therefrom

Also Published As

Publication number Publication date
DK3034552T3 (da) 2019-02-04
MY184039A (en) 2021-03-17
ES2710998T3 (es) 2019-04-29
KR101846805B1 (ko) 2018-05-18
BR112017011886B1 (pt) 2022-03-15
EP3034552B1 (en) 2018-11-28
KR20170077256A (ko) 2017-07-05
TWI606086B (zh) 2017-11-21
WO2016096687A1 (en) 2016-06-23
US20200087428A1 (en) 2020-03-19
IL252747A (en) 2017-11-30
EP3034552A1 (en) 2016-06-22
CN107001503A (zh) 2017-08-01
US10982022B2 (en) 2021-04-20
IL252747A0 (en) 2017-07-31
RU2661868C1 (ru) 2018-07-20
BR112017011886A2 (pt) 2018-02-27
TW201627372A (zh) 2016-08-01

Similar Documents

Publication Publication Date Title
US10982022B2 (en) Method of forming melt-blown non-wovens
EP1987070B1 (en) Viscosity breaking process for propylene polymers
KR102059982B1 (ko) 개질된 헤테로상 폴리올레핀 조성물
JP4884391B2 (ja) ヒドロキシルアミンエステル組成物を用いたポリプロピレンの分解
EP2454298B1 (en) Polypropylene impact copolymers having high melt flow and izod ductility
DE60207870T2 (de) Thermoplastische elastomere und verfahren zu ihrer herstellung
RU2684098C2 (ru) Сшиваемая композиция, содержащая полиэтилен, и ее применение для ротационного формования
KR20150058407A (ko) 헤테로상 프로필렌 공중합체 및 탈크를 함유하는 조성물의 제조 방법
JP2000169643A (ja) 高衝撃強度を有するタルク強化ポリプロピレン成形材料
RU2676763C1 (ru) Нетканые мельтблауны без дробинок и с улучшенными барьерными свойствами
WO2016014122A1 (en) Modified heterophasic polyolefin composition
EP3802634A1 (en) Propylene copolymer compositions suitable for foaming
US5461119A (en) Olefin polymers partially crosslinked with bismaleimido compounds
JP2007023398A (ja) 長繊維不織布用ポリプロピレン樹脂組成物
US6020437A (en) Propylene polymer and process for obtaining it
JP2011256247A (ja) プロピレン樹脂組成物
JP4808419B2 (ja) ポリプロピレン系樹脂組成物並びにその組成物からなる注射器外筒
EP3850041A1 (en) Clarifier blends for optimum performance
JP5070714B2 (ja) ポリプロピレン樹脂組成物およびその射出成形体
US11377544B2 (en) Polypropylene impact copolymers with reduced emission of volatiles
JPS6119646A (ja) 軟質ポリプロピレン組成物

Legal Events

Date Code Title Description
AS Assignment

Owner name: BOREALIS AG, AUSTRIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FIEBIG, JOACHIM;VAN PARIDON, HENK;WANG, JINGBO;AND OTHERS;REEL/FRAME:042753/0452

Effective date: 20170529

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION