- Patent Title: Active polymer modification of bitumen for use in roofing materials
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Application No.: US16245684Application Date: 2019-01-11
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Publication No.: US11021609B2Publication Date: 2021-06-01
- Inventor: Jason D. Smith , Joseph W. Mellott, II , Melissa Rus , David Sokol , Julia Holland
- Applicant: Garland Industries, Inc.
- Applicant Address: US OH Cleveland
- Assignee: Garland Industries, Inc.
- Current Assignee: Garland Industries, Inc.
- Current Assignee Address: US OH Cleveland
- Agency: Ulmer & Berne, LLP
- Agent Brian Turung; Eric Robbins
- Main IPC: C08L95/00
- IPC: C08L95/00 ; C08G18/69 ; C08G18/44 ; E04D5/10
Abstract:
A modified bitumen consisting of a polyurethane wherein the polyisocyanate or polyisocyanate-dominated polyurethane prepolymer (or prepolymers) is first reacted with the bitumen to take advantage of the bitumen's hydroxyl and amine functionality and form an isocyanate-bitumen adduct to form a weatherproofing product.
Public/Granted literature
- US20190177543A1 Active Polymer Modification of Bitumen for Use in Roofing Materials Public/Granted day:2019-06-13
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