Invention Grant
- Patent Title: Multi-stage polymer composition and films made therefrom
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Application No.: US14418521Application Date: 2013-08-05
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Publication No.: US10040915B2Publication Date: 2018-08-07
- Inventor: Hailan Guo , Steven J. Broadwater , Veera D. Nelliappan
- Applicant: Rohm and Haas Company
- Applicant Address: US PA Philadelphia
- Assignee: Rohm and Haas Company
- Current Assignee: Rohm and Haas Company
- Current Assignee Address: US PA Philadelphia
- International Application: PCT/US2013/053544 WO 20130805
- International Announcement: WO2014/035608 WO 20140306
- Main IPC: C08J5/18
- IPC: C08J5/18 ; C08F220/10 ; C08F265/06 ; C08F285/00 ; C08F220/40

Abstract:
A multi-stage polymer composition comprising a crosslinked core having a Tg of from −85 to −10° C.; an intermediate region which comprises one or more intermediate layers, wherein each of the intermediate layers comprises from 88.5 to 99.9 weight percent of units derived from a one or more monomers selected from the group consisting of alkyl (meth)acrylate monomers, from 0 to 5 weight percent of units derived from a cross-linking monomer, a graft-linking monomer, or a combination of two or more thereof, optionally from 0 to 2 weight percent units derived from one or more chain transfer agents; wherein there is a compositional gradient between the intermediate layers such that the Tg transitions from −30° C. to 70° C. over the width of the intermediate region, and an outermost layer which has a Tg of from 40° C. to 110° C. is provided.
Public/Granted literature
- US20150183944A1 Multi-Stage Polymer Composition and Films Made Therefrom Public/Granted day:2015-07-02
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