GB1009388A - Polyurethanes - Google Patents

Polyurethanes

Info

Publication number
GB1009388A
GB1009388A GB3867963A GB3867963A GB1009388A GB 1009388 A GB1009388 A GB 1009388A GB 3867963 A GB3867963 A GB 3867963A GB 3867963 A GB3867963 A GB 3867963A GB 1009388 A GB1009388 A GB 1009388A
Authority
GB
United Kingdom
Prior art keywords
polyhydric alcohol
amount
secondary hydroxyl
mol
hydroxyl groups
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
GB3867963A
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 Corp
Original Assignee
Mobay Corp
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 Mobay Corp filed Critical Mobay Corp
Publication of GB1009388A publication Critical patent/GB1009388A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6633—Compounds of group C08G18/42
    • 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
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Artificial Filaments (AREA)

Abstract

A process for the preparation of polyurethanes comprises reacting (a) an organic diisocyanate with (b) an hydroxyl polyester of acid number below 10 and hydroxyl number below 224 and prepared by condensing a dicarboxylic acid having at least 3C with a glycol containing at least one secondary hydroxyl group in the molecule or a mixture of glycols, at least one of which contains at least one secondary hydroxyl group in the molecule and a polyhydric alcohol having the formula R(OH)n where R represents an organic radical after the removal of the hydroxyl groups from a polyhydric alcohol and n is 3, 4 or 5 wherein, when n is 3, the polyhydric alcohol is used in an amount from 0.003 to 0.75 mol. per equivalent of secondary hydroxyl groups, when n is 4, the polyhydric alcohol is used in an amount from 0.0015 to 0.0375 mol. per equivalent of secondary hydroxyl groups and when n is 5, the polyhydric alcohol is used in an amount from 0.001 to 0.025 mol. per equivalent of secondary hydroxyl groups, and (c) a difunctional chain-extending agent of MW less than 500 and containing hydroxyl and/or amino groups; the diisocyanate being employed in amount to provide an -NCO to OH ratio of greater than 1. Chain-extending agents may be: dihydric alcohols, hydrazines, hydrazides, diamines and amino alcohols. Many suitable alcohols and acids for the preparation of the polyester are listed. Isocyanates listed include aliphatic, cycloaliphatic, aromatic and sulphur and halogen containing isocyanates. In a typical Example (1) a polyester derived from adipic acid, propylene glycol, ethylene glycol and trimethylolpropane was mixed with 1,4-butanediol and 4,41-diphenyl methane diisocyanate added.
GB3867963A 1962-10-01 1963-10-01 Polyurethanes Expired GB1009388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22755562A 1962-10-01 1962-10-01

Publications (1)

Publication Number Publication Date
GB1009388A true GB1009388A (en) 1965-11-10

Family

ID=22853552

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3867963A Expired GB1009388A (en) 1962-10-01 1963-10-01 Polyurethanes

Country Status (3)

Country Link
BE (1) BE637982A (en)
DE (1) DE1299887B (en)
GB (1) GB1009388A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056122A1 (en) * 1981-01-10 1982-07-21 BASF Aktiengesellschaft Process for the manufacture of flexible non-rigid polyurethane foams with improved hydrolysis resistance and good punchability

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT517966A (en) * 1953-06-30
BE562462A (en) * 1956-11-20
BE598100A (en) * 1957-09-25 1900-01-01
DE1106488B (en) * 1959-04-14 1961-05-10 Bayer Ag Process for the production of homogeneous, rubber-elastic plastics
DE1122697B (en) * 1960-05-06 1962-01-25 Bayer Ag Process for the production of foams based on isocyanate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056122A1 (en) * 1981-01-10 1982-07-21 BASF Aktiengesellschaft Process for the manufacture of flexible non-rigid polyurethane foams with improved hydrolysis resistance and good punchability

Also Published As

Publication number Publication date
BE637982A (en)
DE1299887B (en) 1969-07-24

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