Organopolysiloxane sized paperboards for gypsum wallboards
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United States of America Patent
Stats
-
May 20, 1980
Grant Date -
N/A
app pub date -
Sep 28, 1977
filing date -
Oct 5, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Novel and improved paperboards useful for making gypsum wallboards, which are sized with a specific organopolysiloxane comprising mercaptoalkyl containing organosiloxane units and, optionally, methacryloxy-containing organosiloxane units in its molecular structure. The sizing compound is used in a relatively small amount and yet can exhibit an excellent effect within a very short time. The sized paperboards have adequately controllable moisture absorption as well as air permeability. They are used to cover or sandwitch a gypsum core to form a complete wallboard in a convenient and economical manner.
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Family
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Cited Art Landscape
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