Method for making block siloxane copolymers
Abstract
A method for synthesizing block polysiloxane copolymers. Diorganoscyclosiloxanes and an end-blocking compound are interacted in the presence of a ring opening polymerization catalyst, producing a blocked prepolymer. The prepolymer is then interacted with a silanediol, resulting in condensation polymerization of the prepolymers. A second end-blocking compound is subsequently introduced to end-cap the polymers and copolymers formed from the condensation polymerization.
- Inventors:
-
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 864330
- Patent Number(s):
- 4348504
- Assignee:
- United States of America as represented by Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; block; siloxane; copolymers; synthesizing; polysiloxane; diorganoscyclosiloxanes; end-blocking; compound; interacted; presence; polymerization; catalyst; producing; blocked; prepolymer; silanediol; resulting; condensation; prepolymers; subsequently; introduced; end-cap; polymers; formed; polymerization catalyst; condensation polymerization; siloxane copolymers; /525/528/
Citation Formats
Butler, Nora, Jessop, Edward S, and Kolb, John R. Method for making block siloxane copolymers. United States: N. p., 1982.
Web.
Butler, Nora, Jessop, Edward S, & Kolb, John R. Method for making block siloxane copolymers. United States.
Butler, Nora, Jessop, Edward S, and Kolb, John R. Fri .
"Method for making block siloxane copolymers". United States. https://www.osti.gov/servlets/purl/864330.
@article{osti_864330,
title = {Method for making block siloxane copolymers},
author = {Butler, Nora and Jessop, Edward S and Kolb, John R},
abstractNote = {A method for synthesizing block polysiloxane copolymers. Diorganoscyclosiloxanes and an end-blocking compound are interacted in the presence of a ring opening polymerization catalyst, producing a blocked prepolymer. The prepolymer is then interacted with a silanediol, resulting in condensation polymerization of the prepolymers. A second end-blocking compound is subsequently introduced to end-cap the polymers and copolymers formed from the condensation polymerization.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}
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