WO1983003420A1 - Aluminum flake-resin dispersions - Google Patents

Aluminum flake-resin dispersions Download PDF

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Publication number
WO1983003420A1
WO1983003420A1 PCT/US1983/000209 US8300209W WO8303420A1 WO 1983003420 A1 WO1983003420 A1 WO 1983003420A1 US 8300209 W US8300209 W US 8300209W WO 8303420 A1 WO8303420 A1 WO 8303420A1
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WO
WIPO (PCT)
Prior art keywords
ethylene glycol
solvent
monobutyl ether
aluminum flake
glycol monobutyl
Prior art date
Application number
PCT/US1983/000209
Other languages
French (fr)
Inventor
I. Du Pont De Nemours And Company E.
Original Assignee
Huybrechts, Jozef, Theresia
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 Huybrechts, Jozef, Theresia filed Critical Huybrechts, Jozef, Theresia
Publication of WO1983003420A1 publication Critical patent/WO1983003420A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C08J3/11—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids from solid polymers
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D17/00—Pigment pastes, e.g. for mixing in paints
    • C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
    • C09D17/006—Metal
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/38—Paints containing free metal not provided for above in groups C09D5/00 - C09D5/36
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2381/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
    • C08J2381/02—Polythioethers; Polythioether-ethers

Definitions

  • BACKGROUND Dispersions of aluminum flake have been made in mixtures of kerosene and ethylene glycol monobutyl ether and other petroleum distillates such as "Solvesso 150" from Exxon Chemicals Co. for use with solvent-based dispersions of poly(arylene sulfide) such as poly (phenylene sulfide) (PPS) and known fluorocarbon polymers such as polytetra fluoroethylene (PTFE) and copolymers of tetra fluoroethylene and hexafluoropropylene (FEP) .
  • poly(arylene sulfide) such as poly (phenylene sulfide) (PPS)
  • PPS poly(phenylene sulfide)
  • fluorocarbon polymers such as polytetra fluoroethylene (PTFE) and copolymers of tetra fluoroethylene and hexafluoropropylene (FEP) .
  • the present invention provides a dispersion of aluminum flake in a mixture of ethylene glycol and ethylene glycol monobutyl ether.
  • each of the ethylene glycol and ethylene glycol monobutyl ether are present in amounts of about 40-60% by weight of the two combined; more preferably at levels of about 55% ethylene glycol, 45% ethylene glycol monobutyl ether.
  • the invention also provides for using such dispersions of aluminum flakes in solvent-based dispersions of poly (phenylene sulfide) and optionally particulate fluorocarbon resin, preferably PTFE or FEP .
  • Ethylene glycol alone does not suitably wet aluminum flake.
  • Ethylene glycol monobutyl ether alone as the solvent will not provide suitable long-term dispersion stability. Blended together accord ing to the invention, the proper combination of the two gives good wetting and longer dispersion stability.
  • Tipure R 900 TiO 2 pigment 4.24 from Du Pont
  • the coating composition has satisfactory dispersion stability and has desirable viscosity and flow characteristics for application to coiled substrate of any suitable material such as aluminum by suitable techniques such as doctor blade or rolling coating.
  • the coating can be cured by heating 10 minutes at 400°C. This drives off the liquid carrier and causes desirable coalescence of the coating. Alternatively, the coating can be cured at 370°C for 15 minutes, at 425°C for 5-7 minutes or under equivalent conditions.
  • Aluminum flake was dispersed with a mixer in various solvent blends, and a settling rating was determined by putting bottles of the dispersions on a vibrating table for 24 hours and then testing the dispersion with a spatula. Equal weights of aluminum flake and solvent were used. The solvent modifications were:
  • E. Dispersed rating 5 The rating system, on a scale of 1-10, includes:

Abstract

Aluminum flake dispersed in a mixture of ethylene glycol and ethylene glycol monobutyl ether and solvent-based dispersions of polyphenylene sulfide and optionally a fluorocarbon resin.

Description

Aluminum Flake-Resin Dispersions CROSS REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of U.S. Ser. No. 364,926 filed April 2, 1982, which is a continuation-in-part of U.S. Ser. No. 254,458, filed April 15, 1981, which claims priority from international application PCT/US80/01759 filed December 31, 1980, designating the United Kingdom (EPO) among other countries.
BACKGROUND Dispersions of aluminum flake have been made in mixtures of kerosene and ethylene glycol monobutyl ether and other petroleum distillates such as "Solvesso 150" from Exxon Chemicals Co. for use with solvent-based dispersions of poly(arylene sulfide) such as poly (phenylene sulfide) (PPS) and known fluorocarbon polymers such as polytetra fluoroethylene (PTFE) and copolymers of tetra fluoroethylene and hexafluoropropylene (FEP) .
Such solvent-based dispersions are quite suitable for spray application, but they can exhibit less than desirable settling and flow characteristics for application by coil coating techniques. SUMMARY OF THE INVENTION
The present invention provides a dispersion of aluminum flake in a mixture of ethylene glycol and ethylene glycol monobutyl ether. Preferably, each of the ethylene glycol and ethylene glycol monobutyl ether are present in amounts of about 40-60% by weight of the two combined; more preferably at levels of about 55% ethylene glycol, 45% ethylene glycol monobutyl ether. The invention also provides for using such dispersions of aluminum flakes in solvent-based dispersions of poly (phenylene sulfide) and optionally particulate fluorocarbon resin, preferably PTFE or FEP .
DETAILED DESCRIPTION By changing the solvent mix and substituting ethylene glycol for kerosene in the prior art, the stability and flow characteristics of coating compositions of the invention are improved to an extent desirable for coil coating. The advantages of the invention are especially noticeable in the wetting of the aluminum flake and the production of stable dispersions in polyphenylene sulfide.
Ethylene glycol alone does not suitably wet aluminum flake. Ethylene glycol monobutyl ether alone as the solvent will not provide suitable long-term dispersion stability. Blended together accord ing to the invention, the proper combination of the two gives good wetting and longer dispersion stability.
The invention will now be illustrated by examples. Parts, percentages and proportions herein are by weight except where indicated otherwise.
EXAMPLE 1 Solvent-Based 66.6 PPS/16 FEP/ 12.75 TiO2/3.65 Al Flake
Prepare a premix by grinding in a pebble mill for 48 hours or grinding in a Dyno-mill for 5 passes a blend of "Ryton" V-I PPS resin 22.16 from Phillips Petroleum Co. FEP powder from Du Pont 5.65
"Tipure R 900" TiO2 pigment 4.24 from Du Pont
"Triton X-100" from Rohm & 6.14 Haas (isooctylphenoxy- polyethoxyethanol) Channel Black (carbon 2.00 colorant)
Cobalt blue pigment 0.05
Ethylene glycol 32.62
Ethylene glycol monobutyl 26.69 ether (butyl Cellosolve from Union Carbide)
Figure imgf000005_0001
100.00 This premix is then mixed in the following proportions:
Premix 96.44 Aluminum flake 1.78
Blend of 55 parts ethylene 1.78 glycol and 45 parts ethylene glycol monobutyl ether
Figure imgf000005_0002
100.00
The coating composition has satisfactory dispersion stability and has desirable viscosity and flow characteristics for application to coiled substrate of any suitable material such as aluminum by suitable techniques such as doctor blade or rolling coating. The coating can be cured by heating 10 minutes at 400°C. This drives off the liquid carrier and causes desirable coalescence of the coating. Alternatively, the coating can be cured at 370°C for 15 minutes, at 425°C for 5-7 minutes or under equivalent conditions. EXAMPLE 2
Comparison of Dispersion Stability
Aluminum flake was dispersed with a mixer in various solvent blends, and a settling rating was determined by putting bottles of the dispersions on a vibrating table for 24 hours and then testing the dispersion with a spatula. Equal weights of aluminum flake and solvent were used. The solvent modifications were:
A. 100 Ethylene glycol B. 75A/25E
C. 50A/50E
D. 25A/75E
E. 100 Butyl Cellosolve The ratings were as follows: A. Impossible to disperse - coagulated
B. Impossible to disperse - coagulated
C. Dispersed rating 7
D. Dispersed rating 6
E. Dispersed rating 5 The rating system, on a scale of 1-10, includes:
7 = Considerable soft deposit on bottom which, when lifted up, runs off the spatula freely. Deposit may be in appreciable volume. 6 = Considerable soft cake on bottom which does not flow off spatula. Cake may fall off spatula due to its mass. 5 = Considerable resistance to movement of the face of the spatula but only slight resistance to movement of the edge of the spatula. In a blend of PPS, PTFE, mica flake, baryte, surfactant and solvent, the same variations in solvent blend gave the following ratings: A. Dispersed rating 7 B. Dispersed rating 6
C. Dispersed rating 6
D. Dispersed rating 5
E. Dispersed rating 5
This shows that about equal parts of the two solvents are best for dispersion stability and the ability to disperse aluminum flake.

Claims

CLAIMS:
1. A solvent-based dispersion of poly (phenylene sulfide) containing a dispersion of aluminum flakes in a mixture of ethylene glycol and ethylene glycol monobutyl ether wherein each of the ethylene glycol and ethylene glycol monobutyl ether are present in amounts of about 40-60% by weight of the two combined.
2. The solvent-based dispersion of claim 1 wherein the proportions are, by weight, about 50% ethylene glycol and 50% ethylene glycol monobutyl ether.
3. The solvent-based dispersion of claim 1 wherein the proportions are, by weight, about 55% ethylene glycol and 45% ethylene glycol monobutyl ether.
4. The solvent-based dispersion of claim 1 also containing fluorocarbon resin in particulate form.
5. The solvent-based dispersion of claim 4 wherein the fluorocarbon resin is polytetrafluoroethylene.
6. The solvent-based dispersion of claim 4 wherein the fluorocarbon resin is a copolymer of tetrafluoroethylene and hexa fluoropropylene.
PCT/US1983/000209 1982-04-02 1983-02-17 Aluminum flake-resin dispersions WO1983003420A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36492682A 1982-04-02 1982-04-02
US364,926820402 1982-04-02

Publications (1)

Publication Number Publication Date
WO1983003420A1 true WO1983003420A1 (en) 1983-10-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
WO (1) WO1983003420A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937156A (en) * 1954-12-22 1960-05-17 Du Pont Colloidal dispersions of polytetrafluoroethylene in certain alcohols, ethers, or amines and process for preparing same
US3856736A (en) * 1972-10-19 1974-12-24 Phillips Petroleum Co Incorporation of high molecular weight fluorocarbon polymer in arylene sulfide polymer
US4139576A (en) * 1976-12-14 1979-02-13 Daikin Kogyo Co., Ltd. Coating compositions containing fluorocarbons, polyarylene sulfides and polyimides
US4212923A (en) * 1975-03-20 1980-07-15 Phillips Petroleum Company Laminate using a poly(arylene sulfide)-polytetrafluoroethylene adhesive
US4287112A (en) * 1979-11-16 1981-09-01 E. I. Du Pont De Nemours And Company Coating of poly(arylene sulfide), fluoropolymer and aluminum flake

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937156A (en) * 1954-12-22 1960-05-17 Du Pont Colloidal dispersions of polytetrafluoroethylene in certain alcohols, ethers, or amines and process for preparing same
US3856736A (en) * 1972-10-19 1974-12-24 Phillips Petroleum Co Incorporation of high molecular weight fluorocarbon polymer in arylene sulfide polymer
US4212923A (en) * 1975-03-20 1980-07-15 Phillips Petroleum Company Laminate using a poly(arylene sulfide)-polytetrafluoroethylene adhesive
US4139576A (en) * 1976-12-14 1979-02-13 Daikin Kogyo Co., Ltd. Coating compositions containing fluorocarbons, polyarylene sulfides and polyimides
US4287112A (en) * 1979-11-16 1981-09-01 E. I. Du Pont De Nemours And Company Coating of poly(arylene sulfide), fluoropolymer and aluminum flake

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