Invention Grant
- Patent Title: Curing for polyallophanate compositions through undercoat acid neutralization
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Application No.: US15933500Application Date: 2018-03-23
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Publication No.: US10696775B2Publication Date: 2020-06-30
- Inventor: Alan Ekin , Florian Johannes Stempfle
- Applicant: Covestro LLC , Covestro Deutschland AG
- Applicant Address: US PA Pittsburgh DE Leverkusen
- Assignee: COVESTRO LLC,COVESTRO DEUTSCHLAND AG
- Current Assignee: COVESTRO LLC,COVESTRO DEUTSCHLAND AG
- Current Assignee Address: US PA Pittsburgh DE Leverkusen
- Agent John E. Mrozinski, Jr.
- Main IPC: C08G18/02
- IPC: C08G18/02 ; C08L75/02 ; C09D7/63 ; C09D175/02 ; C08G18/62 ; C08G18/48 ; C08G18/44 ; C08K5/29 ; C09J175/02 ; C08G18/20 ; C09D175/06 ; C09J175/04 ; C08G18/79 ; C08G18/42 ; C09D175/04 ; C08G18/18 ; C08G18/78 ; C09J175/06

Abstract:
The present invention provides a system comprising an allophanate composition comprising a neutralized polyol, a polyuretdione resin, a tertiary amine catalyst, an additive package, and a reducer and a neutralized basecoat comprising an acid scavenger and a pigment. The resulting allophanate system may be used to make coatings, adhesives, castings, composites, and sealants in which clear-coating on neutralized pigmented basecoats is much improved in comparison to non-neutralized basecoats.
Public/Granted literature
- US20190292293A1 CURING FOR POLYALLOPHANATE COMPOSITIONS THROUGH UNDERCOAT ACID NEUTRALIZATION Public/Granted day:2019-09-26
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