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GB1225094A - - Google Patents

Info

Publication number
GB1225094A
GB1225094A GB1225094DA GB1225094A GB 1225094 A GB1225094 A GB 1225094A GB 1225094D A GB1225094D A GB 1225094DA GB 1225094 A GB1225094 A GB 1225094A
Authority
GB
United Kingdom
Prior art keywords
envelope
polyurethane
heating
shrunk
feb
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
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 filed Critical
Publication of GB1225094A publication Critical patent/GB1225094A/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
    • C08G18/82—Post-polymerisation treatment
    • 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/003—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

1,225,094. Shrinkable polyurethane films. KABEL - UND METALLWERKE GUTEHOFFNUNGSHUTTE A.G. 12 Feb., 1969 [17 Feb., 1968], No. 7603/69. Heading B5B. A shrunk-on envelope is made by using as the envelope forming material a polyurethane which has not been cross-linked by irradiation at any stage in its production. A hollow body comprising the said polyurethane may be prepared by heating it to a temperature between 50‹ and 100‹ C., preferably to about 80‹ C., stretching at that temperature if not stretched before heating, cooling in the stretched condition and then shrinking to form the shrunk-on envelope by heating above 100‹ C., preferably about 170‹ C.
GB1225094D 1968-02-17 1969-02-12 Expired GB1225094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681704160 DE1704160A1 (en) 1968-02-17 1968-02-17 Use of polyurethane containing C-O and N-H groups as material for shrink articles

Publications (1)

Publication Number Publication Date
GB1225094A true GB1225094A (en) 1971-03-17

Family

ID=5688683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1225094D Expired GB1225094A (en) 1968-02-17 1969-02-12

Country Status (8)

Country Link
AT (1) AT294424B (en)
BE (1) BE727719A (en)
CH (1) CH514649A (en)
DE (1) DE1704160A1 (en)
FR (1) FR2002129A1 (en)
GB (1) GB1225094A (en)
NL (1) NL6901757A (en)
SE (1) SE351802B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211851A4 (en) * 1985-01-04 1988-01-28 Thoratec Lab Corp Compositions that soften at predetermined temperatures and the method of making same.
JP2502132B2 (en) * 1988-09-30 1996-05-29 三菱重工業株式会社 Shape memory polyurethane elastomer molded body
JPH0739506B2 (en) * 1988-09-30 1995-05-01 三菱重工業株式会社 Shape memory polymer foam
JPH066349B2 (en) * 1988-10-18 1994-01-26 三菱重工業株式会社 Shape memory tubular body and construction method thereof
JPH02113016A (en) * 1988-10-21 1990-04-25 Mitsubishi Heavy Ind Ltd Heat insulating material consisting of shape memorizing polymer foam

Also Published As

Publication number Publication date
SE351802B (en) 1972-12-11
NL6901757A (en) 1969-08-19
FR2002129A1 (en) 1969-10-03
AT294424B (en) 1971-11-25
CH514649A (en) 1971-10-31
BE727719A (en) 1969-07-01
DE1704160A1 (en) 1971-04-22

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Legal Events

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