NL7604491A - Moulding phenol-formaldehyde resin article - contg powder and fibre filler in differentially heated mould to produce high density skin - Google Patents

Moulding phenol-formaldehyde resin article - contg powder and fibre filler in differentially heated mould to produce high density skin

Info

Publication number
NL7604491A
NL7604491A NL7604491A NL7604491A NL7604491A NL 7604491 A NL7604491 A NL 7604491A NL 7604491 A NL7604491 A NL 7604491A NL 7604491 A NL7604491 A NL 7604491A NL 7604491 A NL7604491 A NL 7604491A
Authority
NL
Netherlands
Prior art keywords
moulding
high density
powder
contg
phenol
Prior art date
Application number
NL7604491A
Other languages
Dutch (nl)
Original Assignee
Gmt Sa
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 Gmt Sa filed Critical Gmt Sa
Priority to NL7604491A priority Critical patent/NL7604491A/en
Publication of NL7604491A publication Critical patent/NL7604491A/en

Links

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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/34—Chemical features in the manufacture of articles consisting of a foamed macromolecular core and a macromolecular surface layer having a higher density than the core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0407—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by regulating the temperature of the mould or parts thereof, e.g. cold mould walls inhibiting foaming of an outer layer
    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • 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
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • C08J2361/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols with monohydric phenols
    • C08J2361/10—Phenol-formaldehyde condensates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

A moulded article is formed by mixing with a formophenolic resin a filler of mineral powder and mineral, vegetable or synthetic fibres and then adding an acidic or basic catalyst and a low b.pt. foaming agent. This mixt. is fed into a differentially heated mould so that the mixt. foams to produce closed cells decreasing from the heated upper region to the cooler lower region whereby to form a high density skin on the moulded article at the lower region of the mould. The method is used for moulding roofing panels. Roofing panels have a high mechanical resistance, and a resistance to atmospheric pollutants. The panels are completely waterproof and fireproof.
NL7604491A 1976-04-27 1976-04-27 Moulding phenol-formaldehyde resin article - contg powder and fibre filler in differentially heated mould to produce high density skin NL7604491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7604491A NL7604491A (en) 1976-04-27 1976-04-27 Moulding phenol-formaldehyde resin article - contg powder and fibre filler in differentially heated mould to produce high density skin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7604491A NL7604491A (en) 1976-04-27 1976-04-27 Moulding phenol-formaldehyde resin article - contg powder and fibre filler in differentially heated mould to produce high density skin

Publications (1)

Publication Number Publication Date
NL7604491A true NL7604491A (en) 1977-10-31

Family

ID=19826087

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7604491A NL7604491A (en) 1976-04-27 1976-04-27 Moulding phenol-formaldehyde resin article - contg powder and fibre filler in differentially heated mould to produce high density skin

Country Status (1)

Country Link
NL (1) NL7604491A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed