Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
  • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
  • B05D5/061—Special surface effect
• • 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
  • C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S260/00—Chemistry of carbon compounds
  • Y10S260/26—Multicolor

Definitions

• bi-color coating compositions consisting of an unstable emulsion of two different colored phases, an internal phase being of aqueous nature, and containing cellulose-containing fibre materials Patented May 25, 1965 and an external phase being of non-aqueous nature.
• a coating composition When such a coating composition is applied to a wall, a wallpaper-like coating patterned in two colors with an appearance similar to paper is obtained. This effect is due to the presence of cellulose-containing fibres to protect the globules of the emulsion so that the coating composition may be applied by brush.
• a coating composition can only be used when a wallpaper-like coating is wanted. Further, this emulsion is unstable, and the coating composition can be stored only for a very short time.
• a well known type of coating composition is the socalled emulsion paints.
• a paint consists of an emulsion of a disperse phase in a continuous'aqueous phase, which disperse phase as binder comprises polymeric materials, preferably of polystyrene type, styrene-butadiene type, poly(vinyl acetate) type and polyacrylic type, conf. for example Encyclopedia of Chemical Technology, First Supplement Volume, The Interscience Encyclopedia, Inc., New York, 1957.
• a further object of my invention is to provide a method of preparing a coating composition of the kind stated above.
• My invention is based on the discovery that a useful emulsion coating composition overcoming the above disadvantages by the known coating compositions adapted to produce spotted color efifects may be obtained when a coating composition having a binder consisting of a solution of cyclized rubber in a hydrocarbon solvent selected from the group consisting of aliphatic, cycloaliphaticand aromatic hydrocarbons is emulgated in an emulsion'paint in which further a hydrocarbon solvent of the same group is emulgated, provided said emulsion coating composition, further comprises a colloidal stabilizing agent.
• the globules form colored spots seen on the background of the color of the emulsion paint
• the colored globules form colored spots seen on the background of the original color of the surface. It has to be noted that'the globules of the emulsion paint are not protected so that these globules will as in conventional emulsion paints coalesce when the emulsion coating composition is applied to a surface.
• the continuous aqueous phase included a phase comprising a hydrocarbon solvent this is owing thereto that otherwise the continuous aqueous phase alone as Well as together with the second dispersed phase has a tendency to draw the hydrocarbon solvent out of the dispersed phase or phases comprising a solution of cyclized rubber which results in a hardening the surface of the globules of said last named phase and the coating composition becomes unusable. This tendency is eliminated, however, when a hydrocarbon solvent is emulgated in the continuous aqueous phase.
• colloidal stabilizing agent contains a colloidal stabilizing agent.
• a salt preferably an alkali salt of polyacrylic acid, for example ammonium polyacrylate or sodium polyacrylate.
• colloidal stabilizing agent which advantageously may be used, methyl cellulose, carboxy-methyl-cellulose, alginates,
• a one-color coating composition according to my invention the pigment or pigments necessary for producing the color are incorporated only in the dispersed phase containing cyclized rubber and a coating film is obtained showing a great number of discrete color stains in a colorless coating film.
• the greatest difficulty in the manufacture of the present coating composition is to produce the final emulsion since the pigmented solution of cyclized rubber cannot or can at least only with very great difficulty be directly emulsified in the continuous aqueous phase.
• the emulsifying in the pre-emulsion of the second dispersed phase in the continuous aqueous phase of the above stated further pro-emulsion of dispersed phase of the first kind in a solution of colloidal stabilizing agent is most suitably carried out by pouring the last pro-emulsion into a bulk ofthe first pre-emulsion under very gentle agitatation. If too great an amount of the second pre-emulsion is added to the first pre-emulsion'at a time, there is a dangerof separation of the dispersed phase of the first kind from the continuous phase. Even a too powerful agitation during the emulsifying process has been shown to EXAMPLE 1 Bi-color coating composition providing a white base color with black spots A white emulsion paint is made by mixing:
• a black/white coating composition is obtained having a good storage stability.
• the paint can be applied on a support, even on a rough or porous support in thick as well as thin coats by means of a paint brush by any other suitable application method resulting in a coating film having a smooth surface.
• the film will have a white base color on which is scattered a great number of discrete black stains, the pattern of the stains depending mainly on the manner in which the brush or other application device has been manipulated.
• Bi-color coating composition providing a grey base color with green spots are mixed and homogenized in a slowly rotating homogenizer, whereupon 30 parts by weight of an emulsified polymer such as a 55% aqueous dispersion of acrylic acid methyl-butyl ester copolymer (based on 40% methyl acrylate and 60% butyl acrylate and having a mol. wt. of about 1.410 for example an emulsion based on emulsion of the kind sold in the trade as Acronal 14D is added under stirring.
• a pre-emulsion or dispersion is 8 obtained in which 12 parts by weight of petroleum spirit are emulsified by vigorous agitation.
• a paste is made by grinding Parts by weight Chromium oxide hydrate, green 24.0 Dolomite 26.0 60% solution of cyclized rubber in petroleum spirit 50.0
• a white/black coating composition is obtained having approximately the same properties as the compositions according to the foregoing examples.
• coating compositions having more than three colors may be obtained by mixing a suitable number already prepared coating compositions of the kind described each with one or more colors.
• each of these phases is mixed with at least some pre-' emulsion before reaching another of these phases.
• a method of preparing a coating composition comprising a stable emulsion of at least two dispersed phases in a continuous aqueous phase; one of said two dispersed phases comprising a colored solution of cyclized rubber in at least one hydrocarbon solvent selected from the group consisting of aliphatic, cycloaliphatic and aromatic hydrocarbons; the second of said two dispersed phases comprising an emulsified synthetic polymeric material; said method including the steps of emulsifying said second dispersed phase in said continuous aqueous phase, in order to obtain an emulsion component; emulsifying at least one hydrocarbon solvent selected from the group consisting of aliphatic, cycloaliphatic and aromatic hy- 6; A method according to claim 4 in which 100 parts by Weight of said first dispersed phase are emulsified in to 120 parts by weight of said solution of colloidal stabilizing agent for obtaining said second pre-emulsion.
• a hydrocarbon solvent selected from the group consisting of aliphatic, cycloaliphatic and aromatic hydrocarbons
• a method of preparing a coating composition comprising a stable emulsion of at least three dispersed phases in a continuous aqueous phase, a first of said three dispersed phases comprising an emulsified synthetic polymeric material; a second of said dispersed phases comprising a hydrocarbon solvent selected from the group consisting of aliphatic, cycloaliphatic and aromatic hydrocarbons; a third of said three dispersed phases comprising a solution of cyclized rubber in a hydrocarbon solvent selected from the group consisting of aliphatic, cycloaliphatic, and aromatic hydrocarbons, at least one pigment being incorporated in said solution; said method including the steps of emulsifying said first and said second dispersed phase in said continuous aqueous phase, in order to obtain a first pro-emulsion; adjusting the viscosity of said first pre-emulsion to a viscosity to between 10 and secs.
• liquid oil-in-water type emulsion coating composition containing pigmented globules adapted to produce a spotted color effect by brushing on a surface without rupture of the said pigmented globules by the hair of the brush, which comprises at least two dispersed phases in a continuous aqueous phase of said emulsion; one of said two dispersed phases comprising a solution of References Cited by the Examiner UNITED STATES PATENTS 4/52 Zola 106--170 12/53- Van Veersen 260-734 MURRAY TILLMAN, Primary Examiner.

Landscapes

• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Paints Or Removers (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8090469

Family Applications (1)

Country Status (6)

Cited By (5)

Families Citing this family (2)

Citations (2)

• 0
  • CA CA656712A patent/CA656712A/en not_active Expired
• 1958
  • 1958-01-18 DK DK16358AA patent/DK91633C/da active
• 1959
  • 1959-01-14 CH CH6838959A patent/CH391159A/de unknown
  • 1959-01-16 FR FR784214A patent/FR1234146A/fr not_active Expired
• 1962
  • 1962-07-10 US US208920A patent/US3185653A/en not_active Expired - Lifetime
• 1966
  • 1966-02-24 BE BE676963D patent/BE676963A/xx unknown

Patent Citations (2)

Also Published As

Similar Documents