GB1197874A - Process for the production of Rigid Polyurethane Foam Articles with a Substantially Non-Porous Surface Film - Google Patents

Process for the production of Rigid Polyurethane Foam Articles with a Substantially Non-Porous Surface Film

Info

Publication number
GB1197874A
GB1197874A GB3350/69A GB335069A GB1197874A GB 1197874 A GB1197874 A GB 1197874A GB 3350/69 A GB3350/69 A GB 3350/69A GB 335069 A GB335069 A GB 335069A GB 1197874 A GB1197874 A GB 1197874A
Authority
GB
United Kingdom
Prior art keywords
polyurethane foam
rigid polyurethane
polyether
polyol
composition
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
GB3350/69A
Inventor
Gerard Repiquet
Michael Cordonnier
Jacques Regnault
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.)
Naphtachimie SA
Original Assignee
Naphtachimie 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 Naphtachimie SA filed Critical Naphtachimie SA
Publication of GB1197874A publication Critical patent/GB1197874A/en
Expired legal-status Critical Current

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
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4829—Polyethers containing at least three hydroxy groups
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0025—Foam properties rigid
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0033—Foam properties having integral skins
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/0058—≥50 and <150kg/m3
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Landscapes

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

Abstract

1,197,874. Rigid polyurethane foam articles. NAPHTACHIMIE. 21 Jan., 1969 [22 Jan., 1968], No. 3350/69. Heading B5A. [Also in Division C3] A rigid polyurethane foam article with an integral non foamed skin is made by introducing a rigid polyurethane foam-forming composition into a mould at the same temperature as the composition; the mass of composition being at least twice the minimum needed to fill the mould when foamed. The foam may be formed in a one step process from a polyether-polyol containing at least three hydroxyl groups and having an hydroxyl index of from 300-600 and crude toluene diisocyanate, crude diphenylmethane diisocyanate or polymethylene polyphenylisocyanate, the NCO: OH ratio being equal to or greater than one. In an alternative embodiment, a "quasi prepolymer" may be prepared from the above polyether-polyol and four to six times the stoichiometric amount of an organic polyisocyanate and this quasi prepolymer and be mixed with more of the polyether-polyol in a second stage to give a NCO: OH ratio equal to or greater than one. The finished article has a smooth rigid surface, a substantally non-porous skin, a slightly porous highly dense zone and a highly porous low density foam interior.
GB3350/69A 1968-01-22 1969-01-21 Process for the production of Rigid Polyurethane Foam Articles with a Substantially Non-Porous Surface Film Expired GB1197874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR136798 1968-01-22

Publications (1)

Publication Number Publication Date
GB1197874A true GB1197874A (en) 1970-07-08

Family

ID=8644851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3350/69A Expired GB1197874A (en) 1968-01-22 1969-01-21 Process for the production of Rigid Polyurethane Foam Articles with a Substantially Non-Porous Surface Film

Country Status (8)

Country Link
BE (1) BE727232A (en)
DE (1) DE1902836A1 (en)
ES (1) ES362758A1 (en)
FR (1) FR1566277A (en)
GB (1) GB1197874A (en)
LU (1) LU57630A1 (en)
NL (1) NL6900985A (en)
SE (1) SE360596B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1207967A (en) * 1966-12-15 1970-10-07 Rotork Controls Improvements in or relating to electric switch controls for electric motor-driven actuators
GB1207969A (en) * 1966-12-15 1970-10-07 Rotork Controls Improvements in or relating to electric switch controls units for electric motor driven actuators
FR2077933A1 (en) * 1970-02-25 1971-11-05 Naphtachimie Sa Foamed polyurethane articles prodn
WO1984000920A1 (en) * 1982-09-01 1984-03-15 Thomas Broennum A method and an apparatus for manufacturing oblong articles of polyurethane integral foam or a corresponding material
FR2584411B1 (en) * 1985-07-08 1988-01-22 Chimie Organique Lab FORMULATION OF A RIGID POLYURETHANE FOAM FOR AREAS OF HIGH HYGROMETRY
US4780482A (en) * 1987-05-01 1988-10-25 Basf Corporation Integral skin rigid polyurethane structural foam

Also Published As

Publication number Publication date
FR1566277A (en) 1969-05-09
NL6900985A (en) 1969-07-24
BE727232A (en) 1969-07-22
ES362758A1 (en) 1970-12-16
DE1902836A1 (en) 1969-11-06
LU57630A1 (en) 1969-04-08
SE360596B (en) 1973-10-01

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Legal Events

Date Code Title Description
PS Patent sealed
433D Application made for revocation (sect. 33/1949)
433D Application made for revocation (sect. 33/1949)
433A Case decided by the comptroller ** patent amended (sect. 33/1949)
SPA Amended specification published
PCNP Patent ceased through non-payment of renewal fee