ES302288A1 - Process for the production of cellular polyurethanes - Google Patents

Process for the production of cellular polyurethanes

Info

Publication number
ES302288A1
ES302288A1 ES0302288A ES302288A ES302288A1 ES 302288 A1 ES302288 A1 ES 302288A1 ES 0302288 A ES0302288 A ES 0302288A ES 302288 A ES302288 A ES 302288A ES 302288 A1 ES302288 A1 ES 302288A1
Authority
ES
Spain
Prior art keywords
radicals
diisocyanate
radical
polyhydroxy
catalysts
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
ES0302288A
Other languages
Spanish (es)
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.)
Lankro Chemicals Ltd
Original Assignee
Lankro Chemicals 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 Lankro Chemicals Ltd filed Critical Lankro Chemicals Ltd
Publication of ES302288A1 publication Critical patent/ES302288A1/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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08G18/16—Catalysts
    • 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
    • C08J2375/08—Polyurethanes from polyethers
    • 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
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers

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)

Abstract

Cellular polyurethanes are prepared by reacting a polyhydroxy polyoxyalkylene glycol ether of M.W. at least 500 with an organic polyisocyanate in the presence of (a) water and/or a non-aqueous blowing agent, (b) a catalyst system for the reaction which comprises at least one organic tin compound and/or at least one organic tertiary amine and (c) a foam-stabilizer consisting of a siloxane-oxyalkylene block copolymer of the general formula <FORM:1048992/C3/1> in which a is from 4 to 10, b is from 2 to 9, R and R1 are hydrocarbon radicals which may be the same or different throughout the polymer molecule, the radicals R attached to any one silicon atom being the same or different, Z is a polyoxyalkylene radical represented by:- -(C2H4O)m(C3H6O)pR11 wherein m+p lies between 15 and 60 and p is between 0.4m and 3m and R11 is a hydrocarbon radical which may be the same or different in various Z residues. The radicals R and R1 in the siloxane-oxyalkylene block copolymer are preferably methyl radicals, but may also be ethyl vinyl or phenyl radicals. R11 is suitably a C1- 6 alkyl radical and may also be a phenyl, cresyl or benzyl radical. The preferred polyhydroxy polyoxyalkylene glycols are those prepared by reacting 1,2-propylene oxide with such compounds as ethylene glycol, 1,2-propylene glycol, butane diol, diethylene glycol, glycerol, trimethylolpropane, hexane triol, pentaerythritol, alpha methyl glucoside and sorbitol. Mixtures of polyhydroxy ethers may be used. Suitable polyisocyanates are hexamethylene diisocyanate, xylene diisocyanate, 4,41-diisocyanato-diphenylmethane, a mixture of 80% toluene, 2,4-diisocyanate and 20% toluene - 2,6 - diisocyanate and polyalkylpolyphenyl isocyanates. The blowing agents may be water, trichlorofluoromethane, dichlorofluoromethane or methylene dichloride. Suitable tin catalysts are stannous octoate, stannous oleate, the stannous salts of gamma(2-methyl, 4-chlorophenoxy) butyric acid and gamma(t.-butylphenoxy) butyric acid and dibutyl tin dilaurate. Triethylamine, triethanolamine, N-methyl morpholine, triethylene diamine and N,N,N1,N1-tetramethyl-1,3-butane diamine are suitable tertiary amine catalysts. Mixtures of catalysts may be used, a preferred mixture being one of a tin salt and triethylene diamine.
ES0302288A 1963-07-22 1964-07-21 Process for the production of cellular polyurethanes Expired ES302288A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28992/63A GB1048992A (en) 1963-07-22 1963-07-22 Process for the production of cellular polyurethanes

Publications (1)

Publication Number Publication Date
ES302288A1 true ES302288A1 (en) 1965-02-16

Family

ID=10284530

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0302288A Expired ES302288A1 (en) 1963-07-22 1964-07-21 Process for the production of cellular polyurethanes

Country Status (9)

Country Link
BE (1) BE650844A (en)
DE (1) DE1233133B (en)
DK (1) DK116903B (en)
ES (1) ES302288A1 (en)
FI (1) FI43498B (en)
FR (1) FR1455031A (en)
GB (1) GB1048992A (en)
NL (2) NL6408400A (en)
SE (1) SE310786B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE584911A (en) * 1958-11-24

Also Published As

Publication number Publication date
SE310786B (en) 1969-05-12
DE1233133B (en) 1967-01-26
NL136878C (en)
FI43498B (en) 1970-12-31
GB1048992A (en) 1966-11-23
BE650844A (en) 1964-11-16
FR1455031A (en) 1966-04-01
NL6408400A (en) 1965-01-25
DK116903B (en) 1970-02-23

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