GB1382243A - Solvent-soluble polyurethanes - Google Patents

Solvent-soluble polyurethanes

Info

Publication number
GB1382243A
GB1382243A GB816071A GB816071A GB1382243A GB 1382243 A GB1382243 A GB 1382243A GB 816071 A GB816071 A GB 816071A GB 816071 A GB816071 A GB 816071A GB 1382243 A GB1382243 A GB 1382243A
Authority
GB
United Kingdom
Prior art keywords
product
dimethylformamide
prepolymer
insoluble
diol
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
GB816071A
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 GB816071A priority Critical patent/GB1382243A/en
Priority to ZA721809A priority patent/ZA721809B/en
Priority to IT2235972A priority patent/IT950742B/en
Priority to BE781247A priority patent/BE781247A/en
Priority to NL7204138A priority patent/NL7204138A/xx
Priority to FR7211088A priority patent/FR2132198A1/fr
Priority to ES401349A priority patent/ES401349A1/en
Priority to AT277972A priority patent/AT326919B/en
Priority to DE19722215736 priority patent/DE2215736A1/en
Priority to CA138,701A priority patent/CA981846A/en
Priority to US424424A priority patent/US3887525A/en
Publication of GB1382243A publication Critical patent/GB1382243A/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
    • C08G18/08—Processes
    • C08G18/0895—Manufacture of polymers by continuous processes
    • 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
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step

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)
  • Manufacturing & Machinery (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

1382243 Thermoplastic polyurethanes IMPERIAL CHEMICAL INDUSTRIES Ltd 8 March 1972 [30 March 1971] 8160/71 Heading C3R Thermoplastic polyurethane elastomers are prepared by (1) reacting a substantially linear polypropylene glycol of M.W. greater than 800 with an excess of an organic diisocyanate to form a prepolymer, (2) reacting the prepolymer with a diol of M.W. at most 250 in such proportions that (a) the ratio of NCO groups in the prepolymer to hydroxyl groups in the diol is at most 1 : 1 and (b) there is produced a polyurethane which is insoluble in dimethylformamide, (3) heating the insoluble product until a dimethylformamide-soluble product is obtained, (4) dissolving the product in dimethylformamide and (5) removing the dimethylformamide to produce a solid polyurethane product. Step (3) of the process is preferably carried out by heating the insoluble product to a temperature of 180‹ to 220‹ C., suitably with mechanical working thereof. The mechanical working may be achieved by injection moulding techniques or by passing the product through a heated barrel by means of a screwed or scrolled axially rotatable shaft. The finally formed dimethylformamide-soluble product is suitably used as a textile coating.
GB816071A 1971-03-30 1971-03-30 Solvent-soluble polyurethanes Expired GB1382243A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
GB816071A GB1382243A (en) 1971-03-30 1971-03-30 Solvent-soluble polyurethanes
ZA721809A ZA721809B (en) 1971-03-30 1972-03-16 Solvent-soluble polyurethanes
IT2235972A IT950742B (en) 1971-03-30 1972-03-24 SOLVENT-SOLUBLE POLYURETHANES
BE781247A BE781247A (en) 1971-03-30 1972-03-24 SOLUBLE POLYURETHANNES IN SOLVENTS
NL7204138A NL7204138A (en) 1971-03-30 1972-03-28
FR7211088A FR2132198A1 (en) 1971-03-30 1972-03-29
ES401349A ES401349A1 (en) 1971-03-30 1972-03-29 Solvent-soluble polyurethanes
AT277972A AT326919B (en) 1971-03-30 1972-03-30 PROCESS FOR MANUFACTURING SOLVENT-SOLUBLE POLYURETHANE ELASTOMERS
DE19722215736 DE2215736A1 (en) 1971-03-30 1972-03-30 Soluble Polyurethanes
CA138,701A CA981846A (en) 1971-03-30 1972-03-30 Solvent-soluble polyurethanes
US424424A US3887525A (en) 1971-03-30 1973-12-13 Process for preparing solvent-soluble polyurethanes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB816071A GB1382243A (en) 1971-03-30 1971-03-30 Solvent-soluble polyurethanes

Publications (1)

Publication Number Publication Date
GB1382243A true GB1382243A (en) 1975-01-29

Family

ID=9846916

Family Applications (1)

Application Number Title Priority Date Filing Date
GB816071A Expired GB1382243A (en) 1971-03-30 1971-03-30 Solvent-soluble polyurethanes

Country Status (10)

Country Link
AT (1) AT326919B (en)
BE (1) BE781247A (en)
CA (1) CA981846A (en)
DE (1) DE2215736A1 (en)
ES (1) ES401349A1 (en)
FR (1) FR2132198A1 (en)
GB (1) GB1382243A (en)
IT (1) IT950742B (en)
NL (1) NL7204138A (en)
ZA (1) ZA721809B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120850A (en) * 1977-09-06 1978-10-17 E. I. Du Pont De Nemours And Company Polyether urethane polymers prepared from a copolymer of tetrahydrofuran and ethylene oxide
US4225696A (en) * 1979-02-21 1980-09-30 Polythetics, Inc. Prosthetic denture prepared from polyurethane elastomer

Also Published As

Publication number Publication date
DE2215736A1 (en) 1972-10-12
IT950742B (en) 1973-06-20
ES401349A1 (en) 1975-02-16
AT326919B (en) 1976-01-12
FR2132198A1 (en) 1972-11-17
ZA721809B (en) 1972-12-27
ATA277972A (en) 1975-03-15
NL7204138A (en) 1972-10-03
BE781247A (en) 1972-09-25
CA981846A (en) 1976-01-13

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee