Use of polyhydroxy compound as plasticizer for polyvinyl alcohol in 3d printing process
AssigneeKuraray Co., Ltd.
InventorsYousuke KUMAKI, Moritz BAIER
Life of this patent
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Abstract
The invention is directed to a process of manufacturing a three-dimensional object by—providing a support structure comprising polyvinyl alcohol (PVOH) to—depositing and solidifying a molten thermoplastic polymer on the support structure to form a three-dimensional preform characterized in that the support structure consists of a mixture of polyvinyl alcohol (PVOH) and at most 20% by weight of at least one plasticizer according to formula (I), (II) or (III): —R1-C(CH2—OH)3 (1); —[R1-C(CH2—OH)2CH2]2O (11); —(R1)C(CH2—OH)2CH2—O—CH2C(CH2—OH)C(R1)CH2—O—CH2 C(CH2—OH)2R1 (III). With R1=H, CH3, C2H5, C3H7, CH2OH. The support structure can be dissolved to from the three-dimensional object.
Claims11
A process of manufacturing a three-dimensional object, comprising:
- depositing and solidifying a molten thermoplastic polymer on a support structure to form a three-dimensional preform,
- wherein the support structure consists of a mixture of polyvinyl alcohol (PVOH) and at most 20% by weight of at least one plasticizer according to formula I, II or III:
- R1-C(CH2—OH)3 (I)
- [R1-C(CH2—OH)2CH2]2O (II)
- (R1)C(CH2—OH)2CH2—O—CH2C(CH2—OH)C(R1)CH2—O—CH2C(CH213 OH)2R1 (III)
- wherein R1 is H, CH3, C2H5, C3H7, or CH2OH.
Dependencies are inferred from the claim text.