Binder composition and slurry composition for ceramic molding: Fid-Bau Portal

Binder composition and slurry composition for ceramic molding

TANAKA MASAHIRO / KOMURO HARUKA / NAGASAWA ATSUSHI / YOSHIKAWA FUMITAKA

Provided is a binder composition for ceramic molding, which contains 15-95% by mass of a component (A) and 5-85% by mass of a component (B), the component (A) being a copolymer having a weight-average molecular weight of 50,000-1,000,000 and having 70-99% by mole of a structural unit derived from formula (1), 1-30% by mole of a structural unit derived from formula (2), and 0-29% by mole of other structural units, CH2 = CR1-COO-R2 formula (1) wherein R1 represents a hydrogen atom or a methyl group, R2 represents a hydrogen atom or a methyl group, and R3 represents a hydrogen atom or a methyl group; in formula (1), R1 represents a hydrogen atom or a methyl group, R2 represents an alkyl group having 1-8 carbon atoms, and in formula (2) CH2 = CR3-COO-R4, R3 represents a hydrogen atom or a methyl group, and R4 represents a hydroxyalkyl group having 1-8 carbon atoms and having 1-2 hydroxyl groups; component (B): a compound represented by formula (3): R5O-(EO) p-(PO) q-H (in formula (3), R5 is a C9 alkyl group, EO is a vinyl oxide group, PO is a propenyl oxide group, p is the average number of moles of EO added and p = 3-9, q is the average number of moles of PO added and q = 2-4, and p/q = 1.0-3.0.

本发明提供一种陶瓷成型用粘结剂组合物，其含有15～95质量％的成分(A)与5～85质量％的成分(B)，成分(A)：来自式(1)的结构单元为70～99摩尔％、来自式(2)的结构单元为1～30摩尔％、其他结构单元为0～29摩尔％，且重均分子量为50,000～1,000,000的共聚物，式(1)CH2＝CR1‑COO‑R2式(1)中，R1表示氢原子或甲基，R2表示碳原子数为1～8的烷基，式(2)CH2＝CR3‑COO‑R4式(2)中，R3表示氢原子或甲基，R4表示具有1～2个羟基的碳原子数为1～8的羟烷基；成分(B)：式(3)所表示的化合物，式(3)R5O‑(EO)p‑(PO)q‑H式(3)中，R5为碳原子数为9的烷基，EO为氧化乙烯基，PO为氧化丙烯基，p为EO的平均加成摩尔数且p＝3～9，q为PO的平均加成摩尔数且q＝2～4，并且p/q＝1.0～3.0。

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