US20150183980A1 - Polyethylene and Polypropylene Based Tie Resin for Co-Extrusion - Google Patents

Polyethylene and Polypropylene Based Tie Resin for Co-Extrusion Download PDF

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US20150183980A1
US20150183980A1 US14/146,416 US201414146416A US2015183980A1 US 20150183980 A1 US20150183980 A1 US 20150183980A1 US 201414146416 A US201414146416 A US 201414146416A US 2015183980 A1 US2015183980 A1 US 2015183980A1
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tie resin
anhydride
tie
polyethylene
polypropylene
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Abandoned
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US14/146,416
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English (en)
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Yong Zheng
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Evergreen Packaging LLC
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Evergreen Packaging LLC
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Priority to US14/146,416 priority Critical patent/US20150183980A1/en
Assigned to Evergreen Packaging, Inc. reassignment Evergreen Packaging, Inc. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YONGZHENG
Priority to PCT/US2014/072495 priority patent/WO2015103108A1/fr
Publication of US20150183980A1 publication Critical patent/US20150183980A1/en
Priority to US14/933,162 priority patent/US9783932B2/en
Assigned to THE BANK OF NEW YORK MELLON reassignment THE BANK OF NEW YORK MELLON PATENT SECURITY AGREEMENT Assignors: CLOSURE SYSTEMS INTERNATIONAL INC., EVERGREEN PACKAGING INC., GRAHAM PACKAGING COMPANY, L.P., GRAHAM PACKAGING PET TECHNOLOGIES INC., Pactiv LLC, PACTIV PACKAGING INC., Reynolds Consumer Products LLC, Reynolds Presto Products Inc.
Assigned to EVERGREEN PACKAGING LLC reassignment EVERGREEN PACKAGING LLC CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: EVERGREEN PACKAGING INC.
Abandoned legal-status Critical Current

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    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/22—Polyalkenes, e.g. polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/003—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
    • C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/06—Polyethene
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Definitions

  • the present invention relates to extrudable blends or compounds of anhydride modified polypropylene and polyethylene and to their applications as a tie resin in coextrusion of polypropylene and polyethylene plastics.
  • the improvement in the ability to coextrude polyethylene (PE) and polypropylene (PP) resins provides improved performance and lower material costs for packaging, construction, automobile and consumer goods products.
  • PE and PP are immiscible polymers. Without proper compatibilizers or tie resins, coextrusion of these materials can lead to separation of the two base polymers.
  • measures to improve the bonding between the polymers include: using PP and PE blends in place of pure PP or PE; using PE and ethylene acrylate copolymer blends in place of pure PE; or using various tie resins which are compatible with both PE and PP during coextrusion.
  • Blending PE with PP affects the end blended product's optical, mechanical and barrier properties.
  • a blend of PE with ethylene methacrylate (EMA) can improve its adhesion to PP. Nonetheless, a large percentage of EMA is required to achieve a good adhesion. It inevitably increases material cost and affects the properties of PE. It has also been observed that at a high percentage of ethylene methacrylate copolymer, the blend adheres not only to PP, but also to the equipment. This can lead to frequent disruptions to the production and an increase in downtime. The same problem exists when using ethylene methacrylate copolymer as an individual tie layer between PP and PE.
  • Polypropylene based POP (Polyolefin Plastomer) and POE (Polyolefin Elastomer) using metallocene techniques can produce copolymers with excellent compatibilities to both PE and PP, and thus are effective tie resins for the two. Nonetheless, POP and POE typically have lower crystallization temperatures than PP and PE. It has been observed that this difference in crystallization temperature can cause wrinkles in multilayer films during sealing.
  • Kiang U.S. Pat. No. 5,336,721 discloses an adhesive consisting of an ethylene alkyl acrylate copolymer and a polypropylene and ethylene copolymer grafted with carboxylic acid or anhydride. The percentage of the latter is between 3 to 10 percent. The main purpose of this adhesive blend is for the adhesion between PMP and EVOH.
  • Adur U.S. Pat. No. 4,957,968 discloses an adhesive consisting of a polyolefin modified with functional groups, including anhydride and capable of binding metals, an unmodified polyolefin and a partially cured elastomer.
  • the percentage of the modified polyolefin is in the range between 15 to 40 percent.
  • the main purpose of this adhesive is to promote adhesion between polymer and metals.
  • Lee U.S. Pat. No. 8,236,886 discloses an adhesive composition comprising a polymer grafted with carboxylic acids or anhydrides, a paraffinic liquid hydrocarbon and a polyolefin base resin of homopolymer, copolymer or mixtures thereof.
  • a polymer grafted with carboxylic acids or anhydrides a paraffinic liquid hydrocarbon
  • a polyolefin base resin of homopolymer, copolymer or mixtures thereof.
  • a tie resin comprising a blend of at least one polyethylene based tie resin and at least one polypropylene based tie resin.
  • a coextrusion structure comprising: a layer of polyethylene; a layer of polypropylene; and a tie resin bonding the polyethylene layer to the polypropylene layer, the tie resin comprising a blend of a polyethylene based tie resin and a polypropylene based tie resin.
  • the polyethylene can be selected from the group comprising of ultrahigh molecular weight polyethylene, high molecular weight polyethylene, high density polyethylene, medium density polyethylene, linear low density polyethylene, low density polyethylene, very low density polyethylene, and blends thereof.
  • the polypropylene can be selected from the group consisting of polypropylene homopolymer, random ethylene-propylene copolymer and impact ethylene-propylene copolymer, among others and blends thereof.
  • a polyethylene based tie resin which comprises a polyethylene modified by grafting with ethylenically unsaturated carboxylic anhydrides.
  • the ethylenically unsaturated carboxylic anhydrides may be selected from the group consisting of maleic anhydride, Nadic anhydride, Himic anhydride, tetrahydrophthalic anhydride, methyl nadic anhydride, methyl Himid anhydride, and combinations thereof.
  • a polypropylene based tie resin which comprises at least a polypropylene modified by grafting with ethylenically unsaturated carboxylic anhydrides.
  • the ethylenically unsaturated carboxylic anhydrides are selected from the group consisting of maleic anhydride, Nadic anhydride, Himic anhydride, tetrahydrophthalic anhydride, methyl nadic anhydride, methyl Himid anhydride, and combinations thereof.
  • FIGS. 1A-1C sets forth representative structures of a tie resin blend produced by a co-extrusion process.
  • FIG. 2 is a graph showing various control and tie layers setting forth bonding strength between the polypropylene and the polyethylene layers.
  • FIG. 3 is a graph setting forth additional bond strength test results from various tie resin blends made in accordance with the present invention.
  • FIG. 4 is a graph setting forth bond strength between extrusion coating layers illustrating differences of bond strength at different sealing temperatures.
  • ranges mentioned herein include all ranges located within the prescribed range. As such, all ranges mentioned herein include all sub-ranges included in the mentioned ranges. For instance, a range from 100-200 also includes ranges from 110-150, 170-190, and 153-162. Further, all limits mentioned herein include all other limits included in the mentioned limits. For instance, a limit of up to 7 also includes a limit of up to 5, up to 3, and up to 4.5.
  • This invention relates to a tie resin blend or compound comprising 10 to 90% polyethylene based tie resin, 10 to 90% polypropylene based tie resin and 0 to 80% other polyolefin resins.
  • the preferred applications of this invention are coatings and films produced by coextrusion of PP and PE. Further applications include coextrusion of PE, PP, Nylon and EVOH. Exemplary configurations of this invention are shown in FIGS. 1A-1C .
  • polyethylene based tie resin comprises polyethylenes modified by grafting of ethylenically unsaturated carboxylic anhydrides, including maleic anhydride, Nadic anhydride, Himic anhydride, tetrahydrophthalic anhydride, methyl nadic anhydride, and methyl Himid anhydride, among others, and other components including unmodified polyethylenes or other polyolefins, fillers, lubricants, stabilizers, and other processing aids.
  • the polyethylene base resin before grafting includes but not limited to linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE). Examples of commercialized tie resins within this category include brands of Plexar, Amplify GR, Bynel and Admer.
  • Polypropylene based tie resin comprises polypropylenes modified by grafting of ethylenically unsaturated carboxylic anhydrides, including but not limited to maleic anhydride, Nadic anhydride, Himic anhydride, tetrahydrophthalic anhydride, methyl nadic anhydride, methyl Himid anhydride, and among others, and other components including unmodified polypropylenes or other polyolefins, fillers, lubricants, stabilizers, and other processing aids.
  • the polypropylene base resin before grafting includes but not limited to polypropylene homopolymer, random polypropylene copolymer and impact polypropylene copolymer. Examples of commercialized tie resin fall into this category including Piexar, Bynel and Admer.
  • the polyolefin resin can be polyethylene homopolymers or copolymers, polypropylene homopolymers or copolymers, ethylene and propylene copolymers, polybutene homopolymers or copolymers, a-polyolefins, and blend thereof.
  • the grafting modification of polyethylene and polypropylene can be accomplished by thermal or mechanical methods.
  • the grafted products are prepared according to U.S. Pat. Nos. 4,927,888 and 4,762,890 which are incorporated herein by reference. Namely, the grafting is accomplished in melt at the presence of polyethylene or polypropylene, a free radical initiator or catalyst, and anhydride molecules.
  • the preferred equipment for this process is twin or single extruders.
  • the grafted anhydride concentration for the resin components is preferably between 0 to 2% by weight.
  • the preferred range is between 0.3 to 1.5% by weight.
  • the polyethylene based tie resin has melt flow index between 0.4 to 10 g/10 min.
  • the preferred range is between 2.0 and 6.0 g/10 min and has density of between 0.90 to 0.96 g/cm 3 .
  • the preferred density range is between 0.91 to 0.93 g/cm 3 .
  • the polypropylene based tie resin has melt flow Rate between 2 to 470 g/10 min.
  • the preferred range is between 2.0 to 32 g/ 10 min.
  • a preferred density range is between 0.88 and 0.90 g/cm 3 .
  • the tie resin blend is prepared by dry mixing of the resins pellets, it is preferred that the extruder for any application should have sufficient mixing capacity.
  • the material of this invention can also be prepared by compounding using single or twin screw extruders with sufficient mixing capacity.
  • Film coatings consisting of PP, tie and LDPE were coextruded onto a 17 pt. paper board substrate. Five different ties were compared, including 50:50 blend of an anhydride modified PE tie resin and an anhydride modified PP tie resin, a LDPE and EMA blend, individual EMA, a LDPE and PP blend and a PP based plastomer. The finished structures are shown as follows:
  • Stripe samples (1′′ wide) were cut from each coated board for adhesion strength testing. They were heat sealed with another strip (1′′ wide) coated with only LDPE. The sealing was conducted at 60 psi and 150° C. with duration of 30 seconds on a heat sealer. After sealing, the sealed samples were cooled down to the room temperature. To measure the adhesion strength, two unbonded ends of each sealed pair were bent perpendicular to the rest of the board and clamped in the test grip of a tensile testing apparatus. The overhead speed was set at 10 inch/minute. The forces at the failure of the samples were reported. The types of the failure were also checked. For each condition, five samples were prepared and measured. The results are shown in FIG. 2 .
  • Extrusion coating was conducted in the same manner as Example 1.
  • Four tie blends of varying concentrations of an anhydride modified PE tie resin, an anhydride modified PP tie resin and LDPE were compared in PP and PE coextrusion.
  • the finished structures were,
  • Example-1 The sealing and subsequent adhesion strength measurements were also carried out as Example-1. The results are shown in FIG. 3 .
  • the failures for 100/0/0 and 70/30/0 occurred mainly at the interface between PP and PE.
  • the failures for 40/40/20 and 50/50/0 took place in the paper board, an indication of strong bonding between PP and PE layers
  • Extrusion coating was conducted in the same manner as Example-1.
  • the adhesion strengths of three types of tie resins were compared at two different sealing temperatures, 150° C. and 180° C.
  • the compared structures were,
  • Example-1 The sealing and subsequent adhesion strength measurements were also carried out as Example-1. The results are shown in FIG. 4 .
  • Extrusion coating was conducted in the same manner as Example-1.
  • a 50:50 blend of an anhydride modified PE tie resin and an anhydride modified PP tie resin was coextruded with PP, nylon and PE having a structure of

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
US14/146,416 2014-01-02 2014-01-02 Polyethylene and Polypropylene Based Tie Resin for Co-Extrusion Abandoned US20150183980A1 (en)

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US14/146,416 US20150183980A1 (en) 2014-01-02 2014-01-02 Polyethylene and Polypropylene Based Tie Resin for Co-Extrusion
PCT/US2014/072495 WO2015103108A1 (fr) 2014-01-02 2014-12-29 Polyéthylène et résine de liaison à base de polypropylène
US14/933,162 US9783932B2 (en) 2014-01-02 2015-11-05 Polyethylene and polypropylene based tie resin for co-extrusion

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2580279A1 (es) * 2015-02-20 2016-08-23 Tubos Neupex, S.A. Recubrimiento protector para tuberías plásticas
US20180305592A1 (en) * 2015-10-26 2018-10-25 Toyobo Co., Ltd. Adhesive composition and hot-melt adhesive
WO2019156733A1 (fr) * 2018-02-09 2019-08-15 Jindal Films Americas Llc Compositions de film de polyéthylène, stratifiés, et leurs procédés de fabrication
CN112778945A (zh) * 2020-12-25 2021-05-11 上海邦中高分子材料股份有限公司 一种pvc薄膜专用粘结树脂及其制备方法
CN112851861A (zh) * 2020-12-25 2021-05-28 上海邦中新材料有限公司 一种pe和pa用相容粘接树脂及其制备方法
CN112961630A (zh) * 2020-12-25 2021-06-15 上海邦中高分子材料股份有限公司 一种高耐候防腐基材用粘结树脂及其制备方法
CN114250048A (zh) * 2021-12-30 2022-03-29 上海邦中新材料有限公司 一种尺寸稳定、粘接性能良好的衬塑复合管专用粘结树脂及其制备方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150183980A1 (en) 2014-01-02 2015-07-02 Evergreen Packaging, Inc. Polyethylene and Polypropylene Based Tie Resin for Co-Extrusion
CN109796912B (zh) * 2018-12-27 2022-03-11 广州鹿山新材料股份有限公司 一种改性聚丙烯热熔胶及其制备方法
TWI781394B (zh) * 2020-04-22 2022-10-21 三芳化學工業股份有限公司 聚丙烯積層材料及其製法

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US9783932B2 (en) 2017-10-10
WO2015103108A1 (fr) 2015-07-09

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