- Method for separating partial (meth)acrylated polyols and urethane-based materials functionalized with (meth)acrylate produced by the partial (meth)acrylated polyols
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A method for separating a partial (meth)acrylated polyol of the present invention comprises the steps of: making a triol react with (meth)acrylate; firstly extracting by adding water to the partial (meth)acrylated polyol prepared from the reaction step; and secondly extracting by adding a solvent to a first aqueous phase which is separated from a first organic phase in the first extraction step. A urethane-based material functionalized with (meth)acrylate of the present invention can be prepared by the reaction of a partial (meth)acrylated polyol and isocyanate.(AA) Reaction of polio and (meth)acrylate (poll, mono-, and de-(meth)acrylated polyol)(BB) Water (25%, v/v) 10 times extraction(CC) First organic phase(DD) First aqueous phase(EE) Evaporation of drying (molecular) solvent(FF) Dichloromethane (25%, v/v) 3 times extraction(GG) De-(meth)acrylated polyol(HH) Second organic phase(II) Second aqueous phase(JJ) Evaporation of drying (molecular) solvent(KK) Mono-(meth)acrylated polyol(LL) Remaining polyolsCOPYRIGHT KIPO 2020
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Paragraph 0090-0097
(2020/06/04)
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- Method for separating partial (meth)acrylated polyols and urethane-based materials functionalized with (meth)acrylate produced by the partial (meth)acrylated polyols
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A separation method of a partial(meth)acrylated polyol of the present invention comprises following steps of: conducting a reaction of triol and (meth)acrylate; primary extraction by adding water to the partial (meth)acrylated polyol manufactured from the reaction step, wherein in the first extraction step, a first organic phase and a first aqueous phase can be separated; and second extraction by adding a solvent to the aqueous phase. An urethane-based material functionalized by (meth)acrylate can be manufactured by reaction with partial (meth)acrylated polyol and isocyanates.(AA) Reaction of polyols and (meth)acrylates (polyols, mono-, and di-(meth)acrylated polyols)(BB) 10 times extraction of water (25%, v/v)(CC) First organic phase(DD) Evaporation of dry (molecular sieve) solvents(EE) First aqueous phase(FF) 3-fold extraction of dichloromethane (25%, v/v)(GG) Di-(meth) acrylated polyols(HH) Second organic phase(II) Second aqueous phase(JJ) Evaporation of dry (molecular sieve) solvents(KK) Mono-(meth)acrylated polyols(LL) Residual polyolCOPYRIGHT KIPO 2020
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Paragraph 0091; 0092; 0094; 0095; 0097; 0098
(2020/02/07)
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- MONOMERS, POLYMERS AND PHOTORESIST COMPOSITIONS
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In one preferred embodiment, polymers are provided that comprise a structure of the following Formula (I): Photoresists that comprises such polymers also are provided.
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Paragraph 0099; 0100
(2018/03/25)
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- Chromene compound
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A photochromic compound featuring a large fading rate to prevent a change in the color tone at the time of fading, exhibiting little color after aged, and exhibiting good durability in the photochromic property. The photochromic compound is a novel chromene compound having a substituted phenyl group at the second position of the naphthopyrane ring and an alkyl group at the fifth position thereof, and is represented by, for example, the following formula, wherein R1 is an alkyl group, R2 and R3 are substituted phenyl groups, and R4 and R5 are substituents.
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