Abstract:
브롬 변성 아크릴레이트 수지 조성물 및 이를 포함하는 광학필름이 개시된다. 개시된 브롬 변성 아크릴레이트 수지 조성물은 적어도 하나의 브롬 원자를 함유하는 브롬 변성 폴리 에폭시 화합물 및 카르복시산을 함유하는 하프 에스터 아크릴레이트 화합물을 반응시켜 제조한 것으로, 분자 내에 브롬 구조를 갖는 브롬 변성 아크릴레이트; 적어도 하나의 비닐기 또는 (메타)아크릴레이트기를 갖는 반응성 모노머; 및 광중합 개시제;를 포함하는 것을 특징으로 한다. 따라서, 개시된 브롬 변성 아크릴레이트 수지 조성물 및 이를 포함하는 광학필름은 굴절율, 경화성, 부착성, 내마모성, 및 광투과율이 향상되고 컬링 현상이 감소될 수 있다.
Abstract:
A bromine modified acrylate resin composition, an optical film containing the polymer product of the composition, and a display device containing the optical film are provided to improve refractive index, curing property, adhesion, abrasion resistance and light transmissivity and to reduce curling. A bromine modified acrylate resin composition comprises a bromine modified acrylate which is a reaction product of a bromine modified polyepoxy compound containing at least one bromine atom and an acrylate compound containing a carboxylic acid and has a bromine structure in the molecule; a reactive monomer containing at least one vinyl or (meth)acrylate group; and a photopolymerization initiator. Preferably the bromine modified polyepoxy compound has a number average molecular weight of 200-3,000.
Abstract:
본 발명은 재조합 단백질의 생산성을 증가시키는 무혈청 배지 및 동물세포 배양방법에 관한 것으로서, 더욱 상세하게는 일반적으로 사용되고 있는 세포 성장용 무혈청 배지에 N-아세틸 시스테인(NAC) 단독 또는 NAC와 소디움 부티레이트(sodium butyrate)가 첨가되어 재조합 단백질의 분비속도가 증가된 무혈청 배지 및 세포 성장용 무혈청 배지에서 세포를 일정농도까지 성장시킨 다음, NAC 단독 또는 NAC와 소디움 부티레이트(sodium butyrate)가 포함된 배지에서 세포 성장을 완전히 시킴으로써 세포의 사멸이 완화되고 재조합 단백질의 분비속도를 증가시키는 동물세포의 배양방법에 관한 것이다.
Abstract:
Disclosed are a biodegradable resin composition and a biodegradable packing material. The disclosed biodegradable resin composition comprises: 30-50 parts by weight of polylactic acid (PLA); 20-30 parts by weight of polybutylene succinate (PBS); 20-30 parts by weight of polybutylene adipate-terephthalate (PBAT) copolymer; and 5-20 parts by weight of an inorganic additive. An NII bar, which has been molded at a temperature of 23°C to have a thickness of 3.2 mm, has a Notched Izod impact strength of 60 J/m or more measured according to ASTM D256.
Abstract:
PURPOSE: A manufacturing method of a polyester resin is provided to manufacture a polyester resin which does not include harmful components by using a catalyst which does not contain heavy metals. CONSTITUTION: A manufacturing method of a polyester resin includes a step of esterificating an alcohol monomer and a carboxylic acid monomer under the presence of 0.1-1.5g of an organic titanium catalyst with regard to 1 mol of the carboxylic acid monomer at 200-220 °C and a step of conducting the condensation polymerization of the result at 220-240 °C and 2 Torr or less. The esterification reaction is conducted by using 5-15 wt% of an organic titanium catalyst.
Abstract:
PURPOSE: A manufacturing method of a biodegradable resin is provided to provide excellent physical properties without minimizing the use of chain extender which is harmful for human body or environment. CONSTITUTION: A manufacturing method of a biodegradable resin comprises: a step of manufacturing polyester prepolymer by polycondensation of divalent alcohol monomer and divalent carboxylic acid monomer; a step of controlling the moisture content of polyester prepolymer to 200 ppm or less; and a step of connecting prepolymer by reacting the polyester prepolymer with 0.1 weight% of less of polyvalent isocyanate compound.
Abstract:
PURPOSE: Provided is a preparation method of a p-nitrophenylsulfonylethoxycarbonyl protected PNA monomer with the amino protected group of 2-aminoethylglycine backbone, thereby easily producing a PNA oligomer by effectively deprotecting the PNA monomer under mild condition. CONSTITUTION: The peptide nucleic acid(PNA) monomer is represented by the formula(1) or (2). In the formula(1), B is adenine, guanine and cytosine and R1 is a 4-methoxyphenyldiphenylmethyl group, and in the formula(2) B is adenine, guanine, cytosine, R1 is a 4-methoxyphenyldiphenylmethyl group and R' is a C1-C6 alkyl group. The preparation method of the PNA monomer employs an intermediate represented by the formula(3), wherein R' is a methyl group or an ethyl group.