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1. WO1980001889 - LOW DENSITY,EXTRUDED ETHYLENIC POLYMER FOAMS

Publication Number WO/1980/001889
Publication Date 18.09.1980
International Application No. PCT/US1980/000276
International Filing Date 17.03.1980
IPC
C08J 9/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
C08J 9/14 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
04using blowing gases generated by a previously added blowing agent
12by a physical blowing agent
14organic
CPC
B29C 44/505
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44Shaping by internal pressure generated in the material, e.g. swelling or foaming ; ; Producing porous or cellular expanded plastics articles
34Auxiliary operations
36Feeding the material to be shaped
46into an open space or onto moving surfaces, i.e. to make articles of indefinite length
50using pressure difference, e.g. by extrusion or by spraying
505extruding the compound through a flat die
B29K 2023/00
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING 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
2023Use of polyalkenes ; or derivatives thereof; as moulding material
C08J 2323/06
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2323Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
02not modified by chemical after treatment
04Homopolymers or copolymers of ethene
06Polyethene
C08J 2423/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2423Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
C08J 9/0061
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
0061characterized by the use of several polymeric components
C08J 9/143
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
04using blowing gases generated by a previously added blowing agent
12by a physical blowing agent
14organic
143Halogen containing compounds
Applicants
Inventors
Priority Data
2068115.03.1979US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LOW DENSITY,EXTRUDED ETHYLENIC POLYMER FOAMS
(FR) MOULAGES DE PRODUITS DE CONSTRUCTION
Abstract
(EN)
Low density ethylenic polymer foam planks having density of from about 0.8 to about 1.9 pounds per cubic foot, dimensional stability, substantially closed-cell structure, a cross-sectional area of at least six square inches and a minimum cross-sectional dimension of at least 0.5 inch. Such foam planks are made from ethylenic polymers by release to lower pressure of flowable, foamable gel under pressure, e.g., by extrusion foaming, wherein the gel comprises at least one ethylenic polymer and at least one volatile blowing agent. The process of making such foam planks is particularly characterized by the improvement wherein the flowable gel is mixed sufficiently to disperse the blowing agent in the gel to an amount from about 13.5 to 35 x 10-4 moles per gram of the ethylenic polymer.
(FR)
Planches en polymere ethylenique a basse densite ayant des densites d"environ 0,8 a environ 1,9 psi, une stabilite dimensionnelle, a structure cellulaire sensiblement fermee, une aire de section transversale d"au moins six pouces carres et une dimension de section transversale d"au moins 0,5 pouce. De telles planches de mousse sont preparees a partir de polymeres ethyleniques par la decharge a une pression plus basse d"un gel sous pression, moussant, par exemple par moussage par extrusion, dans lequel le gel comprend au moins un polymere ethylenique et au moins un agent de moussage de volatile. Le procede de fabrication de telles planches est caracterise par l"amelioration selon laquelle le gel d"ecoulement est melange suffisamment pour disperser l"argent de moussage dans le gel en une proportion d"environ 13,5 a 35.10-4 moles par gramme du polymere ethylenique.
Also published as
NO19803431
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