Invention Grant
- Patent Title: Copolyesterimides derived from N,N′-bis-(hydroxyalkyl)-benzophenone-3,3′,4,4′-tetracarboxylic diimide and films made therefrom
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Application No.: US14898614Application Date: 2014-06-17
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Publication No.: US09840590B2Publication Date: 2017-12-12
- Inventor: Stephen William Sankey , David Turner , Howard Colquhoun , Stephen Jones
- Applicant: Stephen William Sankey , David Turner , Howard Colquhoun , Stephen Jones
- Applicant Address: US DE Wilmington
- Assignee: DUPONT TEIJIN FILMS U.S. LIMITED PARTNERSHIP
- Current Assignee: DUPONT TEIJIN FILMS U.S. LIMITED PARTNERSHIP
- Current Assignee Address: US DE Wilmington
- Agency: RatnerPrestia
- Priority: GB1310837.8 20130618
- International Application: PCT/GB2014/051853 WO 20140617
- International Announcement: WO2014/202961 WO 20141224
- Main IPC: C08G73/16
- IPC: C08G73/16 ; C08J5/18 ; C08G63/685 ; C08G73/10 ; C08L79/08 ; D01F6/84 ; C08G63/88 ; C08G73/00
Abstract:
A semi-crystalline biaxially oriented film comprising a copolyester which comprises repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and the monomer of formula (I): (I) wherein n=2, 3 or 4, Z is C═O, and wherein comonomer (I) constitutes a proportion of the glycol fraction of the copolyester and is present in an amount of at least about 4 mol % of the glycol fraction of the copolyester.
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