GB1447594A - Method of preparing powder paint compositions - Google Patents

Method of preparing powder paint compositions

Info

Publication number
GB1447594A
GB1447594A GB3660174A GB3660174A GB1447594A GB 1447594 A GB1447594 A GB 1447594A GB 3660174 A GB3660174 A GB 3660174A GB 3660174 A GB3660174 A GB 3660174A GB 1447594 A GB1447594 A GB 1447594A
Authority
GB
United Kingdom
Prior art keywords
powder
cross
temperature
solid
zone
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.)
Expired
Application number
GB3660174A
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.)
Ford Motor Co Ltd
Ford Motor Co
Original Assignee
Ford Motor Co Ltd
Ford Motor Co
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 Ford Motor Co Ltd, Ford Motor Co filed Critical Ford Motor Co Ltd
Publication of GB1447594A publication Critical patent/GB1447594A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C09D5/03—Powdery paints
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
    • C08G59/32—Epoxy compounds containing three or more epoxy groups
    • C08G59/3209—Epoxy compounds containing three or more epoxy groups obtained by polymerisation of unsaturated mono-epoxy compounds

Abstract

1447594 Preparing powder paints FORD MOTOR CO Ltd 20 Aug 1974 [20 Aug 1973 (2)] 36601/74 Headings C3B and C3P Powder paint compositions are prepared by: (A) preparing a liquid paint by mixing (I) a copolymer containing reactive groups and having a glass transition temperature of 40- 90‹ C. and number average M.W. 1000-15,000, (II) an inert solvent and (III) pigment and passing this into an evaporating zone; (B) supplying heat to the zone to maintain the temperature above the melting point of I but below its degradation point and above the temperature at which II begins to vapourize; (C) passing the solution to a separating zone, whilst maintaining the temperature as in (B) above, causing II to vapourize and allowing the molten non-volatiles to collect in a molten state; (D) removing the volatile components; (E) cooling the non-volatiles to a solid; and (F) comminuting to form a pigmented powder. A modification of the method involves the additional steps: (G) blending a cross-linking agent with the powder from (F); (H) mixing at a temperature above the melting point of the particles but below that at which cross-linking occurs; (I) cooling to a solid; (J) comminuting the resultant solid to form a powder coating composition. In most of the examples I is a copolymer of glycidyl (meth)acrylate with other unsaturated monomers which may, e.g. be cross-linked with a salinated straight chain aliphatic dicarboxylic acid. In one example (18) the ractive monomer is 2-hydroxyethyl methaerylate and the cross-linking agent ZnCl 2 . The powder may contain a flow control agent, e.g. polylauryl acrylate.
GB3660174A 1973-08-20 1974-08-20 Method of preparing powder paint compositions Expired GB1447594A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38984573A 1973-08-20 1973-08-20
US38984473A 1973-08-20 1973-08-20

Publications (1)

Publication Number Publication Date
GB1447594A true GB1447594A (en) 1976-08-25

Family

ID=27012871

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3660174A Expired GB1447594A (en) 1973-08-20 1974-08-20 Method of preparing powder paint compositions

Country Status (1)

Country Link
GB (1) GB1447594A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1358277A1 (en) * 2000-12-15 2003-11-05 Bhp Steel (Jla) Pty. Ltd. Manufacturing solvent-free solid paint
AU2002221330B2 (en) * 2000-12-15 2006-11-02 Akzo Nobel Pty Ltd Manufacturing solvent-free solid paint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1358277A1 (en) * 2000-12-15 2003-11-05 Bhp Steel (Jla) Pty. Ltd. Manufacturing solvent-free solid paint
EP1358277A4 (en) * 2000-12-15 2004-12-22 Bhp Steel Jla Pty Ltd Manufacturing solvent-free solid paint
AU2002221330B2 (en) * 2000-12-15 2006-11-02 Akzo Nobel Pty Ltd Manufacturing solvent-free solid paint
US7192996B2 (en) 2000-12-15 2007-03-20 Bhp Steel (Jla) Pty. Ltd. Manufacturing solvent-free solid paint

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Legal Events

Date Code Title Description
694A Case decided by the comptroller (rule 94(3)/1968)
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee