Invention Grant
- Patent Title: Synthesis of tetrafunctional polyethers and compositions formed therefrom
- Patent Title (中): 四官能聚醚及其组合物的合成
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Application No.: US323587Application Date: 1989-03-14
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Publication No.: US5099042APublication Date: 1992-03-24
- Inventor: Robert B. Wardle , Jerald C. Hinshaw
- Applicant: Robert B. Wardle , Jerald C. Hinshaw
- Applicant Address: UT Ogden
- Assignee: Thiokol Corporation
- Current Assignee: Thiokol Corporation
- Current Assignee Address: UT Ogden
- Main IPC: C08G65/28
- IPC: C08G65/28 ; C08G65/26 ; C08L71/02
Abstract:
Polymers are produced from 4 and 5 member cyclic ethers, which polymers have hydroxyl functionalities of 4. The cyclic ethers are polymerized with an acid catalyst and a tetraol initiator having the general formula: ##STR1##
Public/Granted literature
- US5994617A Engraftment of immune-deficient mice with human cells Public/Granted day:1999-11-30
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