GB615209A - Improved moulding compositions - Google Patents

Improved moulding compositions

Info

Publication number
GB615209A
GB615209A GB1569845A GB1569845A GB615209A GB 615209 A GB615209 A GB 615209A GB 1569845 A GB1569845 A GB 1569845A GB 1569845 A GB1569845 A GB 1569845A GB 615209 A GB615209 A GB 615209A
Authority
GB
United Kingdom
Prior art keywords
parts
syrup
mixed
per cent
wood flour
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
GB1569845A
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.)
GEOFFREY PHILIP LEE
Imperial Chemical Industries Ltd
Original Assignee
GEOFFREY PHILIP LEE
Imperial Chemical Industries Ltd
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 GEOFFREY PHILIP LEE, Imperial Chemical Industries Ltd filed Critical GEOFFREY PHILIP LEE
Priority to GB1569845A priority Critical patent/GB615209A/en
Publication of GB615209A publication Critical patent/GB615209A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Mottled articles, of which the individual colours harmonise with each other without showing hard dividing lines or smudging, result when employing moulding compositions obtained by blending together a plurality of different coloured powders each containing a thermosetting resin, a wood flour filler and finely divided metal pigment. Metal powders known in the trade as "bronzes" are preferred, and best results are obtained by using powders made up of irregularly shaped large particles, e.g. up to 1/2 inch diameter. A base for the composition is obtained by condensing urea with formaldehyde in molar proportions of 1-1.5 for 2 1/2 to 3 1/2 hours at a pH of 7.5-8 to give a syrup which is mixed with wood flour in the proportions of 306 parts to 208 parts. The impregnated syrup is dried to a moisture content of 10 per cent and mixed with 0.2 per cent zinc stearate and 0.5 per cent trimethyl phosphate and the mixture malaxated on rolls and broken into 1/4 -\ba1/2 inch flakes; 300 parts of the base are mixed with 15 parts pale gold lac bronze or 15 parts copper bronze. A similar base is obtained by condensing melamine and formaldehyde in molar ratio of 1 : 3 for 90 mins. at a pH of 6.8 and mixing the syrup with alpha cellulose flock or by mixing 48 parts wood flour, 30 parts phenol novolak, 1,6 part cresylic novolak, 5.42 parts hexa, 2.4 parts lime and 2 parts stearin. The following pigments are specified: gold and copper bronzes, aluminium powder, Fast Violet R, Fast Blue GS, Rose Ultramarine, Blue Lake 21035. Specifications 489,467 and 519,298 are referred to.
GB1569845A 1945-06-20 1945-06-20 Improved moulding compositions Expired GB615209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1569845A GB615209A (en) 1945-06-20 1945-06-20 Improved moulding compositions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1569845A GB615209A (en) 1945-06-20 1945-06-20 Improved moulding compositions

Publications (1)

Publication Number Publication Date
GB615209A true GB615209A (en) 1949-01-04

Family

ID=10063859

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1569845A Expired GB615209A (en) 1945-06-20 1945-06-20 Improved moulding compositions

Country Status (1)

Country Link
GB (1) GB615209A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670060A (en) * 1968-12-10 1972-06-13 Medil Spa A method for manufacturing artificial marble

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670060A (en) * 1968-12-10 1972-06-13 Medil Spa A method for manufacturing artificial marble

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