JPS54155253A - Gasket for bottle cap - Google Patents

Gasket for bottle cap

Info

Publication number
JPS54155253A
JPS54155253A JP6378078A JP6378078A JPS54155253A JP S54155253 A JPS54155253 A JP S54155253A JP 6378078 A JP6378078 A JP 6378078A JP 6378078 A JP6378078 A JP 6378078A JP S54155253 A JPS54155253 A JP S54155253A
Authority
JP
Japan
Prior art keywords
propylene
gasket
random copolymer
butene
bottle cap
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.)
Granted
Application number
JP6378078A
Other languages
Japanese (ja)
Other versions
JPS6354751B2 (en
Inventor
Nobuyuki Yamazoe
Kazuo Iwata
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
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 Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP6378078A priority Critical patent/JPS54155253A/en
Publication of JPS54155253A publication Critical patent/JPS54155253A/en
Publication of JPS6354751B2 publication Critical patent/JPS6354751B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To provide a material of gasket for bottle cap, which gives high gas- tightness by lower capping pressure than the one required for the conventional gasket made of a low-density polyethylene, characterized in that said gasket material is composed of a propylene. 1-butene random copolymer having specific propylene content and heat of fusion.
CONSTITUTION: A gasket made of a propylene.1-butene random copolymer having a propylene content of 65W85 mole%, pref. 70W80 mol%, and a heat of fusion of 20W80 joule/g, pref. 30W70 joule/g. The propylene.1-butene random copolymer can be prepared, e.g. by the random copolymerization of propylene and 1-butene in the presence of a catalyst composed of (A) complex containing Mg, Ti and halogen, (B) an organo-metallic compound of a metal belonging to I-III group, and (C) an electron donor.
COPYRIGHT: (C)1979,JPO&Japio
JP6378078A 1978-05-30 1978-05-30 Gasket for bottle cap Granted JPS54155253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6378078A JPS54155253A (en) 1978-05-30 1978-05-30 Gasket for bottle cap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6378078A JPS54155253A (en) 1978-05-30 1978-05-30 Gasket for bottle cap

Publications (2)

Publication Number Publication Date
JPS54155253A true JPS54155253A (en) 1979-12-07
JPS6354751B2 JPS6354751B2 (en) 1988-10-31

Family

ID=13239226

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6378078A Granted JPS54155253A (en) 1978-05-30 1978-05-30 Gasket for bottle cap

Country Status (1)

Country Link
JP (1) JPS54155253A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158456A (en) * 1978-06-05 1979-12-14 Mitsui Petrochem Ind Ltd Packing material of bottle stopper
DE102018128283A1 (en) * 2018-07-23 2020-01-23 Silgan White Cap Manufacturing Gmbh Vascular closure with sealing element
DE102019131078A1 (en) * 2019-11-18 2021-05-20 Silgan White Cap Manufacturing Gmbh Vessel closure with sealing element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02115481A (en) * 1988-09-28 1990-04-27 Juan Capdevila Key controlling access and related magnetic lock

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158456A (en) * 1978-06-05 1979-12-14 Mitsui Petrochem Ind Ltd Packing material of bottle stopper
JPH0255472B2 (en) * 1978-06-05 1990-11-27 Mitsui Petrochemical Ind
DE102018128283A1 (en) * 2018-07-23 2020-01-23 Silgan White Cap Manufacturing Gmbh Vascular closure with sealing element
DE102018128283B4 (en) 2018-07-23 2023-04-27 Silgan White Cap Manufacturing Gmbh Vessel closure with sealing element
DE102019131078A1 (en) * 2019-11-18 2021-05-20 Silgan White Cap Manufacturing Gmbh Vessel closure with sealing element

Also Published As

Publication number Publication date
JPS6354751B2 (en) 1988-10-31

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