摘要:
Process for producing photoresist polymeric compound having repeated units corresponding to at least one monomer selected from monomer (a) having lactone skeleton, monomer (b) having group which becomes soluble in alkali by elimination with acid, and monomer (c) having alicyclic skeleton having hydroxyl group. Process includes (A) polymerizing mixture of monomers containing at least one monomer selected from the above monomers (a), (b), and (c), and (B) extracting polymer formed in the polymerization by using organic solvent and water to partition the formed polymer into organic solvent layer and metal component impurity into aqueous layer, or passing polymer solution, which contains polymer having repeated units corresponding to at least one of the above monomers (a), (b), and (c) and metal content of which is 1000 ppb by weight or less relative to the polymer through filter comprising porous polyolefin membrane having cation-exchange group. The photoresist polymeric compounds have a metallic impurity content that is extremely low.
摘要:
Process for producing photoresist polymeric compound having repeated units corresponding to at least one monomer selected from monomer (a) having lactone skeleton, monomer (b) having group which becomes soluble in alkali by elimination with acid, and monomer (c) having alicyclic skeleton having hydroxyl group. Process includes (A) polymerizing mixture of monomers containing at least one monomer selected from the above monomers (a), (b), and (c), and (B) extracting polymer formed in the polymerization by using organic solvent and water to partition the formed polymer into organic solvent layer and metal component impurity into aqueous layer, or passing polymer solution, which contains polymer having repeated units corresponding to at least one of the above monomers (a), (b), and (c) and metal content of which is 1000 ppb by weight or less relative to the polymer through filter comprising porous polyolefin membrane having cation-exchange group. The photoresist polymeric compounds have a metallic impurity content that is extremely low.
摘要:
Process for producing photoresist polymeric compound having repeated units corresponding to at least one monomer selected from monomer (a) having lactone skeleton, monomer (b) having group which becomes soluble in alkali by elimination with acid, and monomer (c) having alicyclic skeleton having hydroxyl group. Process includes (A) polymerizing mixture of monomers containing at least one monomer selected from the above monomers (a), (b), and (c), and (B) extracting polymer formed in the polymerization by using organic solvent and water to partition the formed polymer into organic solvent layer and metal component impurity into aqueous layer, or passing polymer solution, which contains polymer having repeated units corresponding to at least one of the above monomers (a), (b), and (c) and metal content of which is 1000 ppb by weight or less relative to the polymer through filter comprising porous polyolefin membrane having cation-exchange group. The photoresist polymeric compounds have a metallic impurity content that is extremely low.
摘要:
Process for producing photoresist polymeric compound having repeated units corresponding to at least one monomer selected from monomer (a) having lactone skeleton, monomer (b) having group which becomes soluble in alkali by elimination with acid, and monomer (c) having alicyclic skeleton having hydroxyl group. Process includes (A) polymerizing mixture of monomers containing at least one monomer selected from the above monomers (a), (b), and (c), and (B) extracting polymer formed in the polymerization by using organic solvent and water to partition the formed polymer into organic solvent layer and metal component impurity into aqueous layer, or passing polymer solution, which contains polymer having repeated units corresponding to at least one of the above monomers (a), (b), and (c) and metal content of which is 1000 ppb by weight or less relative to the polymer through filter comprising porous polyolefin membrane having cation-exchange group. The photoresist polymeric compounds have a metallic impurity content that is extremely low.
摘要:
The process for producing a photoresist polymeric compound of the present invention is characterized by a process for producing a photoresist polymeric compound having a repeated unit corresponding to at least one monomer selected from a monomer (a) having a lactone skeleton, a monomer (b) having a group which becomes soluble in alkali by elimination with an acid and a monomer (c) having an alicyclic skeleton having a hydroxyl group, wherein the process comprises the step of; (i) the polymerization step (A) polymerizing a mixture of monomers containing at least one monomer selected from the above monomers (a), (b) and (c), and the extraction step (B) of extracting a polymer formed in the polymerization by using an organic solvent and water to partition the formed polymer into an organic solvent layer and a metal component as an impurity into an aqueous layer, or (ii) the step (I) passing a polymer solution, which contains a polymer having a repeated unit corresponding to at least one of the above monomers (a), (b) and (c), and a metal content of which is 1000 ppb by weight or less relative to the polymer, through a filter comprising a porous polyolefin membrane having cation-exchange group. The method of the present invention can efficiently provide a photoresist polymeric compound having an impurity content such as metal of extremely low.
摘要:
Process for producing photoresist polymeric compound having repeated units corresponding to at least one monomer selected from monomer (a) having lactone skeleton, monomer (b) having group which becomes soluble in alkali by elimination with acid, and monomer (c) having alicyclic skeleton having hydroxyl group. Process includes (A) polymerizing mixture of monomers containing at least one monomer selected from the above monomers (a), (b), and (c), and (B) extracting polymer formed in the polymerization by using organic solvent and water to partition the formed polymer into organic solvent layer and metal component impurity into aqueous layer, or passing polymer solution, which contains polymer having repeated units corresponding to at least one of the above monomers (a), (b), and (c) and metal content of which is 1000 ppb by weight or less relative to the polymer through filter comprising porous polyolefin membrane having cation-exchange group. The photoresist polymeric compounds have a metallic impurity content that is extremely low.
摘要:
Process for producing photoresist polymeric compound having repeated units corresponding to at least one monomer selected from monomer (a) having lactone skeleton, monomer (b) having group which becomes soluble in alkali by elimination with acid, and monomer (c) having alicyclic skeleton having hydroxyl group. Process includes (A) polymerizing mixture of monomers containing at least one monomer selected from the above monomers (a), (b), and (c), and (B) extracting polymer formed in the polymerization by using organic solvent and water to partition the formed polymer into organic solvent layer and metal component impurity into aqueous layer, or passing polymer solution, which contains polymer having repeated units corresponding to at least one of the above monomers (a), (b), and (c) and metal content of which is 1000 ppb by weight or less relative to the polymer through filter comprising porous polyolefin membrane having cation-exchange group. The photoresist polymeric compounds have a metallic impurity content that is extremely low.
摘要:
It is intended to provide a tampon wherein a string-shaped member is bonded to a cylindrical absorbent in the state of not being exposed on the absorbent surface. A tampon comprising an absorbent (2), which is obtained by molding a sheet member into a cylindrical shape, and a string-shaped member (4) which is bonded to the absorbent (2) and extends from one end of the absorbent (2). The string-shaped member (4) has a first string part which is bonded along the first direction of one face of the sheet member constituting the absorbent (2) and a second string part which extends from the sheet member. A first folding part is formed in one side of the second direction that is perpendicular to the first direction of the first string member, while a second folding part is formed in the other side of the second direction. Owing to this constitution, the absorbent (2) is deformed by bending respectively from the first folding part and the second folding part and thus molded into a cylindrical shape from which the first string part is not exposed.
摘要:
An individual package of sanitary tampon that can be easily opened and can avoid any unintended seal breakage while being carried. The individual package of tampon comprises a vertically long, flat bag body made of a sheet-shaped member and a tampon with applicator individually enclosed in the bag body. The individual package further comprises a seal breaking part with one or more cut portions provided continuously or intermittently along a given direction of the sheet-shaped member and a buffer structure part provided on one side or both sides of the seal breaking part in the seal breaking direction. The buffer structure part has a slack portion formed by slacking the sheet-shaped member.
摘要:
An anti-glare film is provided and includes micro concave/convex portions on a surface. An average interval between the micro concave and convex portions is equal to 300 μm or less. A differentiation with respect to angle d{Log(I(α))}/dα of a logarithm intensity of reflection Log(I(α)) in a direction of a deviation angle α from a direction of specular reflection has an extreme value. A differentiation d{Log(P(β)}/dβ of a histogram P(β) to an inclination angle β of the micro concave/convex portions has an extreme value. In the anti-glare film 1, a value C(2.0) of transmitted image clarity measured by using an optical comb of a comb width of 2 mm in accordance with JIS-K7105 is equal to 30% or more, and a ratio C(0.125)/C(2.0) of the value C(2.0) measured by using the optical comb of the comb width of 2 mm and a value C(0.125) measured by using an optical comb having a comb width of 0.125 mm is equal to 0.1 or more.