Invention Grant
- Patent Title: In-situ formed polyether polyols, a process for their preparation, and a process for the preparation of polyurethane foams
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Application No.: US17386844Application Date: 2021-07-28
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Publication No.: US11718705B2Publication Date: 2023-08-08
- Inventor: Sharlene A. Lewis , Jack R. Reese
- Applicant: Covestro LLC
- Applicant Address: US PA Pittsburgh
- Assignee: Covestro LLC
- Current Assignee: Covestro LLC
- Current Assignee Address: US PA Pittsburgh
- Agent Donald R. Palladino; N. Denise Brown
- Main IPC: C08G18/16
- IPC: C08G18/16 ; C08G18/18 ; C08G18/20 ; C08G18/24 ; C08G18/28 ; C08G18/48 ; C08G18/76 ; C08G65/12 ; C08G65/26 ; C08J9/12 ; C08L71/02
Abstract:
This invention relates to an in-situ formed polyether polyol blend having an overall functionality of 2 to 3 and an overall hydroxyl number of 40 to 220 mg KOH/g. A process for preparing these in-situ formed polyether polyol blends is also disclosed. These in-situ formed polyether polyol blends are suitable for a process of preparing viscoelastic flexible polyurethane foams.
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