EP0066672A2
Expired / Lapsed
EP
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Process for producing porous film or sheet
Assignee: Mitsubishi Chemical Corp
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Filing: 1982-03-02
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Granted: —
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Expires: 2002-03-02
Abstract
Abstract A process for producing a porous film or sheet, which comprises melt-molding a composition prepared by compounding 100 parts by weight of a polyolefin resin with 25 to 400 parts by weight of a filler and 1 to 100 parts by weight of a liquid or waxy hydrocarbon polymer into film or sheet, and stretching the resuiting film or sheet.
Inventors
- 👤 Masaaki Sugimoto
- 👤 Yukio Watanabe
- 👤 Kunio Bizen
- 👤 Tsunemitsu Hasegawa
- 👤 Masahiro Morita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 19:06
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; B; B29; B29C; B29C48/00; B29C48/022; B29C48/001; B29C48/0012; B29C48/0018; B29C48/03; B29C48/07; B29C48/08; B29K; B29K2105/00; B29K2105/04; B29K2105/06; B29K2105/12; C08J2323/00; C08J2323/02; Y; Y10; Y10S; Y10S264/00; Y10S264/13
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
61 words
A process for producing a porous film or ; sheet, which comprises melt-molding a composition prepared by compounding 100 parts by weight of a polyolefin resin with 25 to 400 parts by weight of a filler and 1 to 100 parts by weight of a liquid or waxy hydrocarbon polymer into film or sheet, and stretching the resulting film or sheet.
Claim 2
Dependent Claim
61 words
A process for producing a porous film or ; sheet, which comprises melt-molding a composition prepared by compounding 100 parts by weight of a polyolefin resin with 25 to 400 parts by weight of a filler and 1 to 100 parts by weight of a liquid or waxy hydrocarbon polymer into film or sheet, and stretching the resulting film or sheet.
Claim 3
Dependent Claim
14 words
The process as in Claim 1, wherein said polyolefin resin is high density polyethylene.
Claim 4
Dependent Claim
12 words
The process as in Claim 1, wherein said polyolefin resin is polypropylene.
Claim 5
Dependent Claim
15 words
The process as in Claim 1, wherein said polyolefin resin is linear low density polyethylene.
Claim 6
Dependent Claim
18 words
The process as in Claim 1, wherein said hydrocarbon polymer contains 1.5 to 5.0 hydroxy groups per molecule.
Claim 7
Dependent Claim
13 words
The process as in Claim 1, wherein said hydrocarbon polymer is liquid polybutadiene.
Claim 8
Dependent Claim
21 words
The process as in Claim 1, wherein said hydrocarbon polymer is hydrogenated liquid polybutadiene having saturated or mostly saturated main chain.
Claim 9
Dependent Claim
14 words
S. The process as in Claim 1, wherein said hydrocarbon polymer is liquid polybutene.
Claim 10
Dependent Claim
34 words
The process as in Claim 1, wherein compounding of said composition is conducted by first dispersing and spreading said hydrocarbon polymer in said polyolefin resin powder, and then mixing the product with said filler.
Claim 11
Dependent Claim
14 words
The process as in Claim 1, wherein said stretching treatment is a monoaxial stretching.
Claim 12
Dependent Claim
14 words
The process as in Claim 1, wherein said stretching treatment is a biaxial stretching.
References Cited (Backward Citations)
No citation records indexed.
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