GB769680A - Improved process for the manufacture of porous or homogeneous polyurethanes - Google Patents

Improved process for the manufacture of porous or homogeneous polyurethanes

Info

Publication number
GB769680A
GB769680A GB32021/52A GB3202152A GB769680A GB 769680 A GB769680 A GB 769680A GB 32021/52 A GB32021/52 A GB 32021/52A GB 3202152 A GB3202152 A GB 3202152A GB 769680 A GB769680 A GB 769680A
Authority
GB
United Kingdom
Prior art keywords
components
mixing chamber
polyisocyanate
under pressure
activator
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
GB32021/52A
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.)
Bayer AG
Original Assignee
Bayer AG
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
Priority to NL93074D priority Critical patent/NL93074C/xx
Application filed by Bayer AG filed Critical Bayer AG
Priority to GB32021/52A priority patent/GB769680A/en
Publication of GB769680A publication Critical patent/GB769680A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/002—Methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7485—Systems, i.e. flow charts or diagrams; Plants with consecutive mixers, e.g. with premixing some of the components
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • 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
    • C08G18/08—Processes
    • C08G18/0895—Manufacture of polymers by continuous processes

Landscapes

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

Abstract

Porous or homogeneous polyurethanes of rigid, semi-rigid or elastic consistency are made by reacting an activator, which is a reaction accelerator and/or a cross-linking agent, with either a polyisocyanate and an organic polymer which has at least two reactive hydrogen atoms and is capable of forming polyurethanes, e.g. at least one polyisocyanate and at least one hydroxyl group-containing polyester, or at least one isocyanate-modified polyester, all the components to be mixed being in the liquid state, wherein at least one of the components is subjected to a high pressure and introduced under pressure into the other component(s) in a confined mixing chamber, thereby effecting mixing of the components, and the resulting mixture is discharged while in a liquid state from the mixing chamber. Preferably one of the liquid components is a polyisocyanate in which is incorporated an anhydrous oil, e.g. paraffin oil, or an anhydrous surface active agent. Components specified are: isocyanates-2.4-toluylene-and 1.5-naphthylene-di-isocyanates; polyesters containing hydroxyl groups-branched polyesters derived from phthalic and adipic acids and stable isocyanate modified linear polyesters from diethylene glycol and adipic acid with or without pentaerythritol; cross-linking agents and accelerators-butylene glycol, sodium phenates, hexahydrodimethylaniline, reaction products of N.N1-diethylamino-ethanol and phenylisocyanate-ester-amines, and water. The activator may be introduced under pressure into the other component(s), or be intermittently injected into a continuously flowing mixture of the other component(s), if desired with subsequent homogenization of the reactive mixture. In a modification, the polyisocyanate and the hydroxyl-containing polyester are conveyed separately to a mixing chamber into which they are injected under pressure, and the activator is either conveyed separately and injected into the mixing chamber under pressure, or is conveyed to the mixing chamber in admixture with one of the liquid components. Suitable apparatus for making the above products is described and claimed in Specification 769,682 [Group III]. Numerous applications of the products are specified. Specification 700,608 also is referred to.
GB32021/52A 1952-12-17 1952-12-17 Improved process for the manufacture of porous or homogeneous polyurethanes Expired GB769680A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL93074D NL93074C (en) 1952-12-17
GB32021/52A GB769680A (en) 1952-12-17 1952-12-17 Improved process for the manufacture of porous or homogeneous polyurethanes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB32021/52A GB769680A (en) 1952-12-17 1952-12-17 Improved process for the manufacture of porous or homogeneous polyurethanes

Publications (1)

Publication Number Publication Date
GB769680A true GB769680A (en) 1957-03-13

Family

ID=25947954

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32021/52A Expired GB769680A (en) 1952-12-17 1952-12-17 Improved process for the manufacture of porous or homogeneous polyurethanes

Country Status (2)

Country Link
GB (1) GB769680A (en)
NL (1) NL93074C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3042733A (en) * 1960-05-19 1962-07-03 Union Carbide Corp Battery construction
US3066646A (en) * 1958-10-30 1962-12-04 Bramley Anthony Bedding
US3118278A (en) * 1959-06-26 1964-01-21 Gas turbine power plant
GB2199837A (en) * 1987-01-15 1988-07-20 Garcia Don Jose Sanchis Producing foam articles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3066646A (en) * 1958-10-30 1962-12-04 Bramley Anthony Bedding
US3118278A (en) * 1959-06-26 1964-01-21 Gas turbine power plant
US3042733A (en) * 1960-05-19 1962-07-03 Union Carbide Corp Battery construction
GB2199837A (en) * 1987-01-15 1988-07-20 Garcia Don Jose Sanchis Producing foam articles

Also Published As

Publication number Publication date
NL93074C (en)

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