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GB751857A - Polyisocyanate modified polyesters - Google Patents

Polyisocyanate modified polyesters

Info

Publication number
GB751857A
GB751857A GB1698953A GB1698953A GB751857A GB 751857 A GB751857 A GB 751857A GB 1698953 A GB1698953 A GB 1698953A GB 1698953 A GB1698953 A GB 1698953A GB 751857 A GB751857 A GB 751857A
Authority
GB
United Kingdom
Prior art keywords
ethylene glycol
copolyester
acid
diphenyl
heated
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
GB1698953A
Inventor
Owen Burchell Edgar
Henry George White
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1698953A priority Critical patent/GB751857A/en
Publication of GB751857A publication Critical patent/GB751857A/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
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
    • C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
    • C08G18/4211—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols
    • C08G18/4216—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols from mixtures or combinations of aromatic dicarboxylic acids and aliphatic dicarboxylic acids and dialcohols

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)

Abstract

A rubber-like material is obtained by reacting an organic polyisocyanate with a copolyester formed from ethylene glycol, terephthalic acid and an aliphatic alpha-omega-dicarboxylic acid containing 4-10 carbon atoms, the molecular proportions of the acids being from 0.54 to 0.82 of terephthalic acid to 1 of the other acid. Preferably the copolyester has a molecular weight of 2000-10,000 and the amount of polyisocyanate used is such that there are 1.0-2.0 isocyanate groups present for each end group of the copolyester. The reaction may be modified by the addition of water, glycols or diamines. Specified polyisocyanates are tetramethylene-, hexamethylene-, p-phenylene-, m-phenylene-, diphenyl-4 : 41-, toluylene-, diphenylmethane-4 : 41-, diphenyl ether-4 : 41-, and naphthylenediisocyanates; and toluene-2 : 4 : 6-, triphenylmethane-4 : 41 : 411-, and diphenyl-2 : 4 : 41-triisocyanates. In an example an ester obtained by heating adipic acid with ethylene glycol and an ester obtained by heating dimethyl terephthalate with ethylene glycol in presence of litharge were heated together while slowly reducing the pressure and removing ethylene glycol. The resulting copolyester having a hydroxyl number of 23 and an acid number of 0.28 was heated with naphthylene-1 : 5-diisocyanate and then a fine spray of water directed on the surface of the melt. The melt thickened to a rubber and was thereafter heated in an oven, homogenized on a mill, baked, re-milled and moulded.
GB1698953A 1953-06-19 1953-06-19 Polyisocyanate modified polyesters Expired GB751857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1698953A GB751857A (en) 1953-06-19 1953-06-19 Polyisocyanate modified polyesters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1698953A GB751857A (en) 1953-06-19 1953-06-19 Polyisocyanate modified polyesters

Publications (1)

Publication Number Publication Date
GB751857A true GB751857A (en) 1956-07-04

Family

ID=10087220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1698953A Expired GB751857A (en) 1953-06-19 1953-06-19 Polyisocyanate modified polyesters

Country Status (1)

Country Link
GB (1) GB751857A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1055229B (en) * 1956-09-01 1959-04-16 Freudenberg Carl Kg Process for the production of cold storage crosslinked polyurethanes
DE1075315B (en) * 1956-10-26 1960-02-11 E I du Pont de Nemours and Company Wilmington Del (V St A) Process for the preparation of elastic polyester urethanes
DE1123463B (en) * 1957-08-09 1962-02-08 Ici Ltd Method of making compliant rolls
WO1997009364A1 (en) * 1995-09-05 1997-03-13 Hüls Ag Biologically degradable polyester, materials made from the polyester and production process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1055229B (en) * 1956-09-01 1959-04-16 Freudenberg Carl Kg Process for the production of cold storage crosslinked polyurethanes
DE1075315B (en) * 1956-10-26 1960-02-11 E I du Pont de Nemours and Company Wilmington Del (V St A) Process for the preparation of elastic polyester urethanes
DE1123463B (en) * 1957-08-09 1962-02-08 Ici Ltd Method of making compliant rolls
WO1997009364A1 (en) * 1995-09-05 1997-03-13 Hüls Ag Biologically degradable polyester, materials made from the polyester and production process
US6150490A (en) * 1995-09-05 2000-11-21 Degussa-Huels Ag Biologically degradable polyester, materials made from the polyester and production process

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