WO1991014750A1 - Compositions de colles a fusion - Google Patents

Compositions de colles a fusion Download PDF

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Publication number
WO1991014750A1
WO1991014750A1 PCT/EP1991/000576 EP9100576W WO9114750A1 WO 1991014750 A1 WO1991014750 A1 WO 1991014750A1 EP 9100576 W EP9100576 W EP 9100576W WO 9114750 A1 WO9114750 A1 WO 9114750A1
Authority
WO
WIPO (PCT)
Prior art keywords
polymer
hot melt
formulation
formulation according
melt adhesive
Prior art date
Application number
PCT/EP1991/000576
Other languages
English (en)
Inventor
Michel Louis Faissat
Original Assignee
Exxon Chemical Patents Inc.
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 Exxon Chemical Patents Inc. filed Critical Exxon Chemical Patents Inc.
Priority to JP91506803A priority Critical patent/JPH05505638A/ja
Publication of WO1991014750A1 publication Critical patent/WO1991014750A1/fr

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Classifications

    • 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
    • C09J123/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials

Definitions

  • the invention relates to hot melt adhesive compositions for use especially but not exclusively in sanitary (diaper) end uses.
  • medium melt index ethylene vinylacetate polymers in hot melt adhesive blends is known from EP-A-78122.
  • a range of vinyl acetate contents of from 11 to 40 % is used together with a high melt index of from 700 to 10000.
  • a range of different transfer agents is disclosed for use providing the high melt index.
  • EP-A-271254 disclosed hot melt formulations including ethylene vinyl acetate acrylic acid terpolymers having a melt viscosity of from 3000 mPa.s to 7000 mPa.s. at a temperature of 190-.C.
  • the terpolymers may contain from 5 to 20 wt% of vinylacetate.
  • AU 2995689 discloses the use of an ethylene vinylacetate copolymer having a melt index from 700 to 10000 and from 5 to 40 wt% of VA with less than 10 alkyl branches per 1000 backbone C-atoms as asphalt modifier.
  • a melt index from 700 to 10000 and from 5 to 40 wt% of VA with less than 10 alkyl branches per 1000 backbone C-atoms as asphalt modifier.
  • VA ethylene vinylacetate copolymer having a melt index from 700 to 10000 and from 5 to 40 wt% of VA with less than 10 alkyl branches per 1000 backbone C-atoms as asphalt modifier.
  • the invention provides a hot melt adhesive composition including
  • the polymer may be a co- or terpolymer with additional functional groups. It is preferred that the polymer is an EVA copolymer. It is further preferred to have an ester derived content of from 25 wt%, especially from 30 wt% up to 35 wt % so as to obtain a flexible formulation with good compatibility characteristics.
  • the ester may also be methyl acrylate or is homologues or methacrylate equivalents. It is preferred that the melt index is from 200 to 1000 and especially from 300 to 800.
  • the polymer may be made by the process described in EP-A-78122 but preferably using an aldehyde, particularly acetaldehyde, as a chain transfer agent for increasing the
  • the tackifiers are preferably compatible hydrogenated, low colour tackifiers.
  • Advantageously hydrogenated petroleum resins are used derived from a C5/C6 olefin or diolefin feed stream and a C9 aromatic compound containing feed stream by thermal or catalytic (Friedel-Crafts) polymerisation. It is preferred, in order that compatibility can be optimised to provide a resin having an aromaticity of from 0 to 50 % preferably from 10 to 40 wt%. With good compatability high tackifier amounts can be incorporated preferably from 35 to 65 wt%.
  • the tackifiers have a Mn of from 200 to 1300 and a Mw/Mn of from 11 to 25 as determined by GPC.
  • the oils and waxes are used optionally to lower the viscosity of the overall formulation to a level suitable for application. As these ingredients reduce generally reduce tack they are used in minimal amounts.
  • the oils may be naphthenic oils, polybutenes, liquid resins, paraffinic oils etc.
  • the overall viscosity of the formulation is preferably from 300 to 15000 mPa.s at 180°C. Amounts of the ingredients and melt indices are selected so as to produce the desired viscosity.
  • MI EVA'S were prepared using acetaldehyde as the transfer agent. Properties of the products are listed below in Table 1.
  • the MI was determined according to ASTM 1238D using condition E i.e. a load of 2,1 kg at 190 - ⁇ C
  • the number of alkyl branches per 1000 C backbone atoms is less than 10 as determined by proton NMR.
  • Runs 3, 6, 7, 10 are not according to the invention and are for comparative purpose.
  • Cloud point (degC) 115 105 145 >200 170 190 >200 170 110 135
  • T-peel PE/N C multiline (g/cm) at 23 degC 2.25 1.40 0.6 0.8 0.7 0.5 0.2 0.4 jerking at 40 degC 0.5 0.5 0.2 - 0.15 0.3 0.45 0.5 0.4
  • Formulation of the invention shows superior heat resistance as measured with hot shear shaft test and similar adhesive properties at lower HMA blend viscosity than formulation using regular EVAs.
  • Runs 1, 4 and 8 are not according to the invention and are for comparative purposes
  • the invention permits formulations to be prepared which are in many ways competitive with formulations based on propylene/butene copolymer and regular EVAs.
  • the formulation of the invention of superior compatibility, lower cloud point, better adhesive performance as measured with T-peel test, of higher tensile strength, and secant modulus, good elongation and higher heat resistance, obtained at lower HMA blend viscosity.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Une colle à fusion comprend: (a) de 15 à 80 % en poids d'un polymère dérivé de l'éthylène et d'un ester non saturé d'éthylène, la partie dérivée de l'ester représentant de 20 à 40 % en poids du total et le polymère ayant un MI de 100 à 6000 et de 0 à 10 ramifications alkyles pour 1000 atomes de carbone de l'ossature; (b) de 20 à 70 % en poids de résine adhésive compatible; (c) de 0 à 30 % en poids d'une huile ou d'une cire compatible, les pourcentages en poids de (a), (b) et (c) étant calculés sur le poids total de la formule. On peut obtenir une meilleure résistance à la chaleur à des viscosités faibles.
PCT/EP1991/000576 1990-03-23 1991-03-21 Compositions de colles a fusion WO1991014750A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP91506803A JPH05505638A (ja) 1990-03-23 1991-03-21 熱溶融型接着組成物

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9006548.3 1990-03-23
GB909006548A GB9006548D0 (en) 1990-03-23 1990-03-23 Hot melt adhesive compositions

Publications (1)

Publication Number Publication Date
WO1991014750A1 true WO1991014750A1 (fr) 1991-10-03

Family

ID=10673136

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/000576 WO1991014750A1 (fr) 1990-03-23 1991-03-21 Compositions de colles a fusion

Country Status (4)

Country Link
EP (1) EP0521079A1 (fr)
JP (1) JPH05505638A (fr)
GB (1) GB9006548D0 (fr)
WO (1) WO1991014750A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009153A1 (fr) * 1991-10-29 1993-05-13 E.I. Du Pont De Nemours And Company Compositions thermoplastiques fortement chargees pour sous-couche de tapis
EP0612824A1 (fr) * 1993-02-23 1994-08-31 National Starch and Chemical Investment Holding Corporation Adhésif thermofusible amélioré
EP0727470A1 (fr) * 1995-02-17 1996-08-21 National Starch and Chemical Investment Holding Corporation Adhésifs thermofusibles à faible température d'application
US6568399B1 (en) 1999-04-26 2003-05-27 National Starch And Chemical Investment Holding Corporation Low application temperature hot melt adhesive for cigarette preparation
US10619081B2 (en) 2017-05-22 2020-04-14 H.B. Fuller Company Hot melt adhesive composition

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0925371A (ja) * 1995-07-12 1997-01-28 Sumitomo Chem Co Ltd 樹脂組成物、ホットメルト接着用樹脂組成物及び積層体
JP5382344B2 (ja) * 2008-12-27 2014-01-08 荒川化学工業株式会社 太陽電池用封止材シート

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2015979B2 (de) * 1969-04-04 1974-07-11 National Starch And Chemical Corp., New York, N.Y. (V.St.A.) Schmelzklebergemisch zum Binden von Büchern auf der Basis von Copolymerisaten des Äthylens
US4497941A (en) * 1981-10-16 1985-02-05 Exxon Research & Engineering Co. Ethylene copolymers for hot melt systems
US4874804A (en) * 1987-06-19 1989-10-17 National Starch And Chemical Corporation Hot melt adhesives based on ethylene-n-butyl acrylate
EP0340990A2 (fr) * 1988-05-04 1989-11-08 Minnesota Mining And Manufacturing Company Adhésif thermofusible, résistant au fluage et à bon délai de prise à température ambiante

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2015979B2 (de) * 1969-04-04 1974-07-11 National Starch And Chemical Corp., New York, N.Y. (V.St.A.) Schmelzklebergemisch zum Binden von Büchern auf der Basis von Copolymerisaten des Äthylens
US4497941A (en) * 1981-10-16 1985-02-05 Exxon Research & Engineering Co. Ethylene copolymers for hot melt systems
US4874804A (en) * 1987-06-19 1989-10-17 National Starch And Chemical Corporation Hot melt adhesives based on ethylene-n-butyl acrylate
EP0340990A2 (fr) * 1988-05-04 1989-11-08 Minnesota Mining And Manufacturing Company Adhésif thermofusible, résistant au fluage et à bon délai de prise à température ambiante

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009153A1 (fr) * 1991-10-29 1993-05-13 E.I. Du Pont De Nemours And Company Compositions thermoplastiques fortement chargees pour sous-couche de tapis
US5332773A (en) * 1991-10-29 1994-07-26 E. I. Du Pont De Nemours And Company Highly filled thermoplastic carpet precoat compositions
EP0612824A1 (fr) * 1993-02-23 1994-08-31 National Starch and Chemical Investment Holding Corporation Adhésif thermofusible amélioré
EP0727470A1 (fr) * 1995-02-17 1996-08-21 National Starch and Chemical Investment Holding Corporation Adhésifs thermofusibles à faible température d'application
US6568399B1 (en) 1999-04-26 2003-05-27 National Starch And Chemical Investment Holding Corporation Low application temperature hot melt adhesive for cigarette preparation
US10619081B2 (en) 2017-05-22 2020-04-14 H.B. Fuller Company Hot melt adhesive composition

Also Published As

Publication number Publication date
GB9006548D0 (en) 1990-05-23
EP0521079A1 (fr) 1993-01-07
JPH05505638A (ja) 1993-08-19

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