JPS54161671A - Preparation of polyolefin foam - Google Patents
Preparation of polyolefin foamInfo
- Publication number
- JPS54161671A JPS54161671A JP7026278A JP7026278A JPS54161671A JP S54161671 A JPS54161671 A JP S54161671A JP 7026278 A JP7026278 A JP 7026278A JP 7026278 A JP7026278 A JP 7026278A JP S54161671 A JPS54161671 A JP S54161671A
- Authority
- JP
- Japan
- Prior art keywords
- parts
- nucleus
- foaming agent
- low pressure
- pressure atmosphere
- 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.)
- Pending
Links
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To prepare a foamed polyolefin having excellent heat resistance, low density, and fine bubble structure, by extruding a mixture comprising a crystalline polyolefin resin, a specific monoolefin copolymer elastomer, a nucleus-forming substance and a volatile foaming agent, to a low pressure atmosphere.
CONSTITUTION: (A) 100 parts by weight of a resin mixture comprising (a) 95-20 wt% of a crystalline polyolefin resin having a density of ≥ 0.945 g/cm2, e.g. high density polyethylene, polypropylene, etc., and (b) 5-80 wt% of a partially cross- linked elastomer composed of two or more monoolefins and having a gel fraction of ≥ 40 wt% measured by immersing in cyclohexane at 25°C for 48 hours, is mixed with (B) 0.01-5 parts of a nucleus-forming substance such as talc, and molten and plasticized in an extruder. The composition is added with (C) 5-50 parts of a volatile foaming agent having a critical temperature higher than the extrusion temperature, and extruded into a low pressure atmosphere while cooling the extrudate to obtain the objective foamed article.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7026278A JPS54161671A (en) | 1978-06-09 | 1978-06-09 | Preparation of polyolefin foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7026278A JPS54161671A (en) | 1978-06-09 | 1978-06-09 | Preparation of polyolefin foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54161671A true JPS54161671A (en) | 1979-12-21 |
Family
ID=13426437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7026278A Pending JPS54161671A (en) | 1978-06-09 | 1978-06-09 | Preparation of polyolefin foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54161671A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60255834A (en) * | 1984-05-31 | 1985-12-17 | Idemitsu Petrochem Co Ltd | Production of polypropylene resin foam |
| JP2002114862A (en) * | 2000-10-10 | 2002-04-16 | Daicel Novafoam Ltd | Resin composition for expansion-melded form, expansion- molded form and method for producing the molded form |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5167365A (en) * | 1974-12-09 | 1976-06-10 | Asahi Dow Ltd | Puropiren echirenkeijushihatsuhotaino seizohoho |
-
1978
- 1978-06-09 JP JP7026278A patent/JPS54161671A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5167365A (en) * | 1974-12-09 | 1976-06-10 | Asahi Dow Ltd | Puropiren echirenkeijushihatsuhotaino seizohoho |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60255834A (en) * | 1984-05-31 | 1985-12-17 | Idemitsu Petrochem Co Ltd | Production of polypropylene resin foam |
| JPH0471933B2 (en) * | 1984-05-31 | 1992-11-17 | Idemitsu Petrochemical Co | |
| JP2002114862A (en) * | 2000-10-10 | 2002-04-16 | Daicel Novafoam Ltd | Resin composition for expansion-melded form, expansion- molded form and method for producing the molded form |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU594976B2 (en) | Expandable polyolefin compositions and preparation process utilizing isobutane blowing agent | |
| US4694027A (en) | Expandable polyolefin compositions and preparation process utilizing isobutane blowing agent | |
| US5089533A (en) | Olefin polymer compositions comprising glycerol monoesters of c20-24 fatty acids and foamed articles prepared therefrom | |
| CA1160800A (en) | Expandable polyolefin compositions and polyolefin foam preparation process | |
| JPS572343A (en) | Foam of crosslinked vinyl chloride resin and its preparation | |
| EP0016347A2 (en) | Method for making closed-cell soft ethylenic polymer blend foams and foams thus obtained | |
| ES456084A1 (en) | Soft ethylenic polymer foams | |
| US4894395A (en) | Expandable polyolefin compositions and polyolefin foam preparation process | |
| JP2779882B2 (en) | Method for producing polypropylene resin foam sheet with beautiful appearance | |
| US3065190A (en) | Method for making extruded polyethylene foams which contain a styrene polymer | |
| JPH07119314B2 (en) | Blowing agent composition for thermoplastic resin foaming | |
| JPS54161671A (en) | Preparation of polyolefin foam | |
| US3711430A (en) | Expandable copolymers of alpha-olefins and alpha,beta-monoethylenically unsaturated carboxylic acids | |
| US3558532A (en) | Method for making ethylene polymer foams | |
| EP0674578B1 (en) | Extruded closed-cell propylene polymer foam | |
| GB1249220A (en) | A process for producing elastic foam moulded articles | |
| JPS56122841A (en) | Production of heat insulating pipe | |
| JPS57202326A (en) | Preparation of foamed polyethylene | |
| JPS6043373B2 (en) | Polyolefin resin composition with improved extrusion moldability | |
| GB1376151A (en) | Fluid transmitting porous material | |
| ES463362A1 (en) | Composition suitable for use in producing extruded expanded insulations | |
| GB1355905A (en) | Foamable resin compositions | |
| JPS57202325A (en) | Preparation of foamed polyethylene | |
| JPS5646738A (en) | Heating medium for valcanizing | |
| JPS54152068A (en) | Production of polyethylene foamed ariticle |