ES393939A1 - Moulded copolyester articles - Google Patents

Moulded copolyester articles

Info

Publication number
ES393939A1
ES393939A1 ES393939A ES393939A ES393939A1 ES 393939 A1 ES393939 A1 ES 393939A1 ES 393939 A ES393939 A ES 393939A ES 393939 A ES393939 A ES 393939A ES 393939 A1 ES393939 A1 ES 393939A1
Authority
ES
Spain
Prior art keywords
temperature
sheets
freezing
plate
plates
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.)
Expired
Application number
ES393939A
Other languages
Spanish (es)
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.)
Sandoz AG
Original Assignee
Sandoz AG
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
Priority claimed from AT724770A external-priority patent/AT304086B/en
Priority claimed from AT724870A external-priority patent/AT304087B/en
Application filed by Sandoz AG filed Critical Sandoz AG
Publication of ES393939A1 publication Critical patent/ES393939A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/66—Polyesters containing oxygen in the form of ether groups
    • C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/672—Dicarboxylic acids and dihydroxy compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/002—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor characterised by the choice of material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

Process for obtaining transparent molded parts of thermoplastic polyesters, free of striations, by embossing amorphous plates or sheets of thermoplastic polyesters of at least 80 mol-% of terephthalic acid and ethylene glycol residues characterized in that it comprises heating the plates or sheets at temperatures of 0 to 50ºC above the freezing temperature of the polyester, mold the plate, or sheet at this temperature by drawing, cooling the molded part obtained at 20ºC at least below the freezing and demolding temperature of the formed piece, the plate or polyester sheet having an intrinsic viscosity of at least 0.70 dl/g, a crystallization temperature of at least 160ºC and a specific weight of less than 1.336. (Machine-translation by Google Translate, not legally binding)
ES393939A 1970-08-07 1971-08-05 Moulded copolyester articles Expired ES393939A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT724770A AT304086B (en) 1970-08-07 1970-08-07 Process for the production of transparent moldings by the deep-drawing process
AT724870A AT304087B (en) 1970-08-07 1970-08-07 Process for the production of transparent moldings by the deep-drawing process

Publications (1)

Publication Number Publication Date
ES393939A1 true ES393939A1 (en) 1974-07-01

Family

ID=25603693

Family Applications (1)

Application Number Title Priority Date Filing Date
ES393939A Expired ES393939A1 (en) 1970-08-07 1971-08-05 Moulded copolyester articles

Country Status (5)

Country Link
DE (1) DE2138753A1 (en)
ES (1) ES393939A1 (en)
FR (1) FR2102129B1 (en)
GB (1) GB1367133A (en)
NL (1) NL7110858A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE424285B (en) * 1979-06-11 1982-07-12 Plm Ab ELEMENTS OF THERMOPLASTIC MATERIALS WITH AN EDGE PART AND ONE, IN RELATION TO THIS, SUBMITTED BODY AND PROCEDURE FOR MANUFACTURE OF SAID ELEMENTS
DE19718739A1 (en) * 1997-05-02 1998-11-05 Hoechst Ag Amorphous plate with structured surface

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828799A (en) * 1955-10-10 1958-04-01 Du Pont Process of enveloping shaped objects

Also Published As

Publication number Publication date
NL7110858A (en) 1972-02-09
GB1367133A (en) 1974-09-18
FR2102129B1 (en) 1975-02-07
FR2102129A1 (en) 1972-04-07
DE2138753A1 (en) 1972-02-10

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