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US 8,986,647 B2Granted
Hydrophilic silicone copolymers useful in carbon fiber production
AssigneeWacker Chemical Corporation
InventorsGoekhan Ural, Michael W. Head, Megan P. Powell
Life of this patent
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Abstract
Robust oiling agent compositions for use in preparing carbon fibers from acrylic polymer carbon fiber precursors contain at least one silicone copolymer minimally containing an organopolysiloxane moiety, a polyoxyalkylene polyether moiety, and at least one internal or terminal urea or urethane group.
Claims20
In a process for preparing carbon fibers from acrylic fibers wherein an oiling agent is applied to the acrylic fibers prior to carbonization, the improvement comprising:
- applying at least once to the acrylic fibers, an oiling agent composition comprising a silicone copolymer containing at least one organopolysiloxane moiety, at least one polyoxyalkylene ether moiety, and at least one linking or terminal group comprising a urea group or urethane group.
Dependencies are inferred from the claim text.