Invention Grant
- Patent Title: Rotomolding process for polyethylene articles
- Patent Title (中): 聚乙烯制品的滚塑工艺
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Application No.: US12762847Application Date: 2010-04-19
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Publication No.: US08357324B2Publication Date: 2013-01-22
- Inventor: Jiong Yu , John Sigler , Eric Wallis
- Applicant: Jiong Yu , John Sigler , Eric Wallis
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agent Tyler A Stevenson
- Main IPC: B28B1/02
- IPC: B28B1/02

Abstract:
The present invention relates to a process for the production of polyethylene hollow articles, which process comprises charging the polyethylene with one or more NO-acyl hindered amine additives containing one or more groups of formula (I), filling this mixture into a mold, heating this mold in an oven to above 280° C., such that the additized polyethylene melts, rotating the mold around at least 2 axes, the additized polyethylene spreading to the walls, cooling the mold while still rotating, opening it, and taking the resultant hollow article out, where the group of formula (I) is where Ra is a monoacyl or diacyl radical; R1-R4 are each C1-C6alkyl; and R5 and R6 are each, independently of one another, hydrogen, C1-C6alkyl or C6-C10aryl; or R5 and R6 are together oxygen.
Public/Granted literature
- US20100327487A1 Rotomolding Process for Polyethylene Articles Public/Granted day:2010-12-30
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