ES346328A1 - Foamed flexible polyurethane elastomers with a high - Google Patents

Foamed flexible polyurethane elastomers with a high

Info

Publication number
ES346328A1
ES346328A1 ES346328A ES346328A ES346328A1 ES 346328 A1 ES346328 A1 ES 346328A1 ES 346328 A ES346328 A ES 346328A ES 346328 A ES346328 A ES 346328A ES 346328 A1 ES346328 A1 ES 346328A1
Authority
ES
Spain
Prior art keywords
pref
internal structure
density
continuous surface
skin
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
ES346328A
Other languages
Spanish (es)
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.)
PAISA PROD AISLANTES SA
Original Assignee
PAISA PROD AISLANTES 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 PAISA PROD AISLANTES SA filed Critical PAISA PROD AISLANTES SA
Priority to ES346328A priority Critical patent/ES346328A1/en
Priority to FR1565505D priority patent/FR1565505A/fr
Priority to LU56773D priority patent/LU56773A1/xx
Priority to NL6813666A priority patent/NL6813666A/xx
Priority to BE721869D priority patent/BE721869A/xx
Priority to DE19681803870 priority patent/DE1803870A1/en
Publication of ES346328A1 publication Critical patent/ES346328A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/34—Chemical features in the manufacture of articles consisting of a foamed macromolecular core and a macromolecular surface layer having a higher density than the core
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/043—Skinned foam
    • 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

Abstract

Foamed polyurethane elastomer has a continuous surface of microcells, the surface cells being invisible to the naked eye, while the internal structure is integral with surface cell structure. - The surface structure pref. consists of a skin with a thickness of 1-3 mm., and consists of compact elastomer with a density of 900 g/l. The internal structure pref. has a density of 60 g/l. The transition between the internal structure and the continuous surface skin is pref. sharp and completely differentiated. The foamed polyurethane elastomer is pref. produced by the one-shut method, with the aid of a liquid halogen-contng. blowing agent having a b.p. below 50 deg.C. - The products have an internal flexible foam structure of low density, and an integrally formed continuous surface of higher density. The transition between the internal structure and the continuous surface skin is very sharp.
ES346328A 1967-10-21 1967-10-21 Foamed flexible polyurethane elastomers with a high Expired ES346328A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES346328A ES346328A1 (en) 1967-10-21 1967-10-21 Foamed flexible polyurethane elastomers with a high
FR1565505D FR1565505A (en) 1967-10-21 1968-02-19
LU56773D LU56773A1 (en) 1967-10-21 1968-08-26
NL6813666A NL6813666A (en) 1967-10-21 1968-09-25
BE721869D BE721869A (en) 1967-10-21 1968-10-04
DE19681803870 DE1803870A1 (en) 1967-10-21 1968-10-18 Foamed flexible polyurethane elastomers with a high

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES346328A ES346328A1 (en) 1967-10-21 1967-10-21 Foamed flexible polyurethane elastomers with a high

Publications (1)

Publication Number Publication Date
ES346328A1 true ES346328A1 (en) 1969-03-16

Family

ID=8446584

Family Applications (1)

Application Number Title Priority Date Filing Date
ES346328A Expired ES346328A1 (en) 1967-10-21 1967-10-21 Foamed flexible polyurethane elastomers with a high

Country Status (6)

Country Link
BE (1) BE721869A (en)
DE (1) DE1803870A1 (en)
ES (1) ES346328A1 (en)
FR (1) FR1565505A (en)
LU (1) LU56773A1 (en)
NL (1) NL6813666A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE334737B (en) * 1970-01-21 1971-05-03 Ici Svenska Ab
US4797239A (en) * 1987-04-09 1989-01-10 T. D. Williamson, Inc. Foam pig with textured surface

Also Published As

Publication number Publication date
NL6813666A (en) 1969-04-23
DE1803870A1 (en) 1969-10-16
LU56773A1 (en) 1968-11-22
FR1565505A (en) 1969-05-02
BE721869A (en) 1969-03-14

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