JPS5738119A - Preparation of stringy polyester foam - Google Patents

Preparation of stringy polyester foam

Info

Publication number
JPS5738119A
JPS5738119A JP11394380A JP11394380A JPS5738119A JP S5738119 A JPS5738119 A JP S5738119A JP 11394380 A JP11394380 A JP 11394380A JP 11394380 A JP11394380 A JP 11394380A JP S5738119 A JPS5738119 A JP S5738119A
Authority
JP
Japan
Prior art keywords
stringy
foam
aromatic polyester
extruded
die
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
JP11394380A
Other languages
Japanese (ja)
Other versions
JPS6148411B2 (en
Inventor
Toru Utsunomiya
Michio Sato
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP11394380A priority Critical patent/JPS5738119A/en
Publication of JPS5738119A publication Critical patent/JPS5738119A/en
Publication of JPS6148411B2 publication Critical patent/JPS6148411B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B29C47/92—

Abstract

PURPOSE:To obtain the captioned foam of high heat resistance and useful as a heat insulating material for the roof or the like by a method wherein an aromatic polyester melt containing foaming material is extruded from a die and treated so that it shows a degree of crystallinity higher than a specific value. CONSTITUTION:After an aromatic polyester melt (examples: polyethylene terephthalate and the like) containing 1-50% by weight of a material (examples: dichlorodifluoromethane etc.) having boiling points 90 deg.C or lower at the ordinary pressure and having a foaming capacity and melting viscosity higher than >=8,000 poises at by 15 deg.C or more higher temp. than the melting point is extruded from a die, it is treated so that the crystallinity exceeds 30% of the final crystalinity at the temperature showing the maximum crystallization speed to obtain a stringy aromatic polyester foam continuous body having sectional areas 1-200mm.<2>. This stringy foam is excellent in heat resist?ance and useful as a heat insulating material for the concrete roof, and the like.
JP11394380A 1980-08-21 1980-08-21 Preparation of stringy polyester foam Granted JPS5738119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11394380A JPS5738119A (en) 1980-08-21 1980-08-21 Preparation of stringy polyester foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11394380A JPS5738119A (en) 1980-08-21 1980-08-21 Preparation of stringy polyester foam

Publications (2)

Publication Number Publication Date
JPS5738119A true JPS5738119A (en) 1982-03-02
JPS6148411B2 JPS6148411B2 (en) 1986-10-24

Family

ID=14625079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11394380A Granted JPS5738119A (en) 1980-08-21 1980-08-21 Preparation of stringy polyester foam

Country Status (1)

Country Link
JP (1) JPS5738119A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362763A (en) * 1991-12-16 1994-11-08 M. & G. Ricerche S.P.A. Foamed cellular polyester resins and process for their preparation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6324710U (en) * 1986-07-30 1988-02-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362763A (en) * 1991-12-16 1994-11-08 M. & G. Ricerche S.P.A. Foamed cellular polyester resins and process for their preparation
EP0866089A1 (en) * 1991-12-16 1998-09-23 SINCO RICERCHE S.p.A. Foamed cellular polyester resins and process for their preparation

Also Published As

Publication number Publication date
JPS6148411B2 (en) 1986-10-24

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