FR2176790A2
Expired / Lapsed
FR
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Polybutylene terephthalate - used for injection-blown hollow article prodn process
Assignee: Novartis AG
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Filing: 1973-03-16
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Granted: —
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Expires: 1993-03-16
Abstract
Abstract In Main Patent DT 2138754 moulded, esp. injection-blown hollow articles, are prepd. by working up polyesters of aromatic dicarboxylic acids and aliphatic or alicyclic diols. In present modification, a polybutylene terephthalate compsn. having >1.9 (>2.1) relative viscosity is used, esp. for prodn. of crystalline opaque injection-blown articles. Temp. of blow-mandrel and jet mould is kept at 50-150 (70-130) degrees C and temp. of blow-mould at 50 (30) degrees C. Products include tubes, cans bottles, beakers, packaging and other containers.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 03:24
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/0005
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