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Title: 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:
 [1];  [1];  [1]
  1. (Livermore, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (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) LLNL
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}
}

Patent:

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