LOW VISCOSITY COMPOSITIONS AND 3D PRINTING METHODS UTILIZING THE COMPOSITIONS
A composition for forming a silicone elastomer is disclosed. The composition comprises: A) a linear organopolysiloxane having at least two silicon-bonded ethylenically unsaturated groups per molecule; B) a linear organohydrogensiloxane having at least two silicon-bonded hydrogen atoms per molecule;...
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Main Authors | , , , |
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Format | Patent |
Language | English French German |
Published |
14.07.2021
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Subjects | |
Online Access | Get full text |
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Summary: | A composition for forming a silicone elastomer is disclosed. The composition comprises: A) a linear organopolysiloxane having at least two silicon-bonded ethylenically unsaturated groups per molecule; B) a linear organohydrogensiloxane having at least two silicon-bonded hydrogen atoms per molecule; C) at least one cross-linker; and D) a hydrosilylation catalyst. The cross-linker C) is selected from the group consisting of: C1) an organopolysiloxane having at least three silicon-bonded ethylenically unsaturated groups per molecule; and C2) an organopolysiloxane having at least three silicon-bonded hydrogen atoms per molecule. At least one of the silicon-bonded ethylenically unsaturated groups of component C1) has a lower reactivity relative to the silicon-bonded ethylenically unsaturated groups of component A). Moreover, at least one of the silicon-bonded hydrogen atoms of component C2) has a lower reactivity relative to the silicon-bonded hydrogen atoms of component B). Methods of forming three-dimensional (3D) articles utilizing the compositions are also disclosed. |
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Bibliography: | Application Number: EP20190778698 |