GB1417218A - Preparation of films with a closed cellular structure made of polyurethanes - Google Patents

Preparation of films with a closed cellular structure made of polyurethanes

Info

Publication number
GB1417218A
GB1417218A GB4956273A GB4956273A GB1417218A GB 1417218 A GB1417218 A GB 1417218A GB 4956273 A GB4956273 A GB 4956273A GB 4956273 A GB4956273 A GB 4956273A GB 1417218 A GB1417218 A GB 1417218A
Authority
GB
United Kingdom
Prior art keywords
pore
temperature
forming agent
cellular structure
azo
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
GB4956273A
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
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 Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB1417218A publication Critical patent/GB1417218A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • 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
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

1417218 Foamed polyurethane coatings RHONE-POULENC SA 24 Oct 1973 [25 Oct 1972] 49562/73 Heading B2E [Also in Divisions B5 C3 and Dl] Coated articles are prepared by applying to a support a solution in an organic solvent of a linear polyurethane, containing a heatdecomposable pore-forming agent having a decomposition temperature of at least 180‹C and optionally, an activator for the poreforming agent and/or a filler, heating the assembly first to a temperature sufficient to remove the solvent but insufficient to decompose the pore-forming agent and then heating the assembly to a temperature sufficient to decompose the pore-forming agent. The support may be a plastics film, a woven or non-woven fabric or paper. Preferred poreforming agents are nitrogen-releasing compounds e.g. azodicarbonamide, azo-bis-isobutyrodinitrile, p-toluene-sulphoazide, 1, 1'- azo-1-cyano-cyclohexane and diisopropyl azodicarboxylate. Drying of the solution takes place suitably at a temperature below 115- 120‹C and formation of the cellular structure at a temperature of 180 to 220‹C.
GB4956273A 1972-10-25 1973-10-24 Preparation of films with a closed cellular structure made of polyurethanes Expired GB1417218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7237844A FR2233166B1 (en) 1972-10-25 1972-10-25

Publications (1)

Publication Number Publication Date
GB1417218A true GB1417218A (en) 1975-12-10

Family

ID=9106208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4956273A Expired GB1417218A (en) 1972-10-25 1973-10-24 Preparation of films with a closed cellular structure made of polyurethanes

Country Status (8)

Country Link
BE (1) BE806471A (en)
CH (1) CH562278A5 (en)
DE (1) DE2353531A1 (en)
ES (1) ES419951A1 (en)
FR (1) FR2233166B1 (en)
GB (1) GB1417218A (en)
IT (1) IT998972B (en)
NL (1) NL7314296A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101641385A (en) * 2006-12-29 2010-02-03 鲁贝莱特公司 The closed-cell foam that contains polyurethane elastomer
CN112480361A (en) * 2020-12-01 2021-03-12 上海恒安聚氨酯股份有限公司 Preparation method of moisture-permeable thermoplastic polyurethane film

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512736B1 (en) * 1981-09-14 1987-11-20 Dana Corp METHOD FOR FORMING A SEAL AND SEAL OBTAINED
EP0569149B1 (en) * 1992-05-08 1998-07-15 Showa Highpolymer Co., Ltd. Polyester injection-molded articles
US5321052A (en) * 1992-05-12 1994-06-14 Showa Highpolymer Co., Ltd. Polyester foamed thin materials
US5314927A (en) * 1992-05-13 1994-05-24 Showa Highpolymer Co., Ltd. Polyester foamed articles and method for producing the same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1006926A (en) * 1963-06-17 1965-10-06 Haveg Industries Inc Foamed thermoplastic resins

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101641385A (en) * 2006-12-29 2010-02-03 鲁贝莱特公司 The closed-cell foam that contains polyurethane elastomer
CN112480361A (en) * 2020-12-01 2021-03-12 上海恒安聚氨酯股份有限公司 Preparation method of moisture-permeable thermoplastic polyurethane film
CN112480361B (en) * 2020-12-01 2022-03-08 上海恒安聚氨酯股份有限公司 Preparation method of moisture-permeable thermoplastic polyurethane film

Also Published As

Publication number Publication date
ES419951A1 (en) 1976-04-16
FR2233166A1 (en) 1975-01-10
IT998972B (en) 1976-02-20
NL7314296A (en) 1974-04-29
BE806471A (en) 1974-04-24
CH562278A5 (en) 1975-05-30
FR2233166B1 (en) 1976-10-29
DE2353531A1 (en) 1974-05-09

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Legal Events

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