Invention Grant
- Patent Title: Process for reclaiming scrap or unused epoxy resin prepreg
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Application No.: US15762876Application Date: 2017-06-07
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Publication No.: US10744679B2Publication Date: 2020-08-18
- Inventor: David H. Bank , Amit K. Chaudhary , Xiaofei Sun
- Applicant: Dow Global Technologies LLC
- Applicant Address: US MI Midland
- Assignee: Dow Global Technologies LLC
- Current Assignee: Dow Global Technologies LLC
- Current Assignee Address: US MI Midland
- International Application: PCT/US2017/036279 WO 20170607
- International Announcement: WO2017/222815 WO 20171228
- Main IPC: B29B17/00
- IPC: B29B17/00 ; B29B17/04 ; C08J11/06 ; C08G59/40 ; C08G59/68 ; C08J5/04 ; B29K63/00 ; B29K101/10 ; B29K105/24 ; B29K105/06 ; B29C43/34 ; B29K105/16

Abstract:
Method for recycling scrap that contains one or more heat resistant fibers and from 25 to 60 wt. %, based on the total weight of the scrap, of an at least partially uncured to fully uncured two component thermosetting resin mixture of (i) one or more thermosetting resins, and (ii) a solid hardener, the methods comprising shredding the scrap to an average size of from 3 to 50 mm, mixing the shredded scrap, preferably after preheating the scrap, to provide a fluid material charge and then compression molding the fluid material charge to make a cured composite material.
Public/Granted literature
- US20190099920A1 PROCESS FOR RECLAIMING SCRAP OR UNUSED EPOXY RESIN PREPREG Public/Granted day:2019-04-04
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