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.)
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.)
Phillips Petroleum Co
Original Assignee
Phillips Petroleum Co
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 Phillips Petroleum CofiledCriticalPhillips Petroleum Co
Priority to ES231543ApriorityCriticalpatent/ES231543A1/en
Publication of ES231543A1publicationCriticalpatent/ES231543A1/en
Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products
(AREA)
Abstract
A process for the production of stretched polymers, characterized in that an olefinic polymer having a density of at least 0.94 and a crystallinity of at least 70 percent is stretched, said expanded polymer is cold stretched at a temperature comprised between substantially the ambient temperature and its softening point, it is heated in cold drawn polymer to a temperature below its softening point and an improved stretched polymer is recovered. (Machine-translation by Google Translate, not legally binding)
ES231543A1956-10-251956-10-25A procedure for the production of stretched polymers. (Machine-translation by Google Translate, not legally binding)
ExpiredES231543A1
(en)
Controlled thermal degradation procedure of a crystalline polymer of an alpha-alpha-olefin aliphatic (Machine-translation by Google Translate, not legally binding)
Procedure of lateral stretching of isotºtic polypropylene films to obtain its molecular orientation (Machine-translation by Google Translate, not legally binding)
Procedure and apparatus for improving the dimensional stability of stretched oriented stretch fibers obtained from elevated and crystallized propylene polymers (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of improved synthetic products capable of transforming in fibers (Machine-translation by Google Translate, not legally binding)