公开(公告)号：KR1020140097919A

公开(公告)日：2014-08-07

申请号：KR1020130010679

申请日：2013-01-30

Applicant: 제일모직주식회사

Inventor： 배진용 ,  최규범 ,  송수정 ,  임호섭 ,  장복남

IPC: C08G64/20 ,  C08G64/30 ,  C08L69/00

CPC classification number: C08G64/307 ,  C08J9/122 ,  C08J2203/06 ,  C08J2369/00

Abstract: A method for preparing a polycarbonate resin of the present invention comprises a step of: polymerizing aromatic dihidroxy compounds and diaryl carbonate and preparing a polycarbonate prepolymer; injecting and mixing an inert gas into the produced polycarbonate prepolymer; and foaming and polymerizing the polycarbonate prepolymer in which the inert gas is mixed. The method for preparing the polycarbonate resin can prevent or reduce the yellowing phenomenon during melt polymerization of the polycarbonate resin.

Abstract translation: 制备本发明的聚碳酸酯树脂的方法包括以下步骤：使芳族二羟基化合物和碳酸二芳酯聚合并制备聚碳酸酯预聚物; 将惰性气体注入并混合到所生产的聚碳酸酯预聚物中; 并使其中混合惰性气体的聚碳酸酯预聚物发泡和聚合。 聚碳酸酯树脂的制备方法可以防止或降低聚碳酸酯树脂熔融聚合过程中的泛黄现象。

公开(公告)号：KR1020140086774A

公开(公告)日：2014-07-08

申请号：KR1020120157678

申请日：2012-12-28

Applicant: 제일모직주식회사

Inventor： 배진용 ,  최규범 ,  송수정 ,  이동근 ,  임호섭

IPC: C08G64/30 ,  C08G64/04 ,  C08K5/51 ,  C08L69/00

CPC classification number: C08G64/083 ,  C08G64/14 ,  C08G64/307

Abstract: A manufacturing method for branched polycarbonate of the present invention comprises: a step of manufacturing a first raw material by mixing an aromatic dihydroxy compound, diarylcarbonate and 60-140 ppb (weight) of a catalyst with respect to the aromatic dihydroxy compound and reacting the same; a step of manufacturing a second raw material by mixing an aromatic dihydroxy compound, diarylcarbonate, a phosphorus based branching agent and 350-450 ppb (weight) of a catalyst with respect to the aromatic dihydroxy compound and reacting the same; and a step of performing melt polymerization on 100 parts by weight of the first raw material and 1-20 parts by weight of the second raw material. The branched polycarbonate manufactured by the manufacturing method has excellent thermal stability since catalyst content is low and exhibits excellent color stability and mobility.

Abstract translation: 本发明的支链聚碳酸酯的制造方法包括：通过将芳族二羟基化合物，二芳基碳酸酯和60-140ppb（重量）的催化剂相对于芳族二羟基化合物混合并使其反应来制造第一原料的步骤 ; 通过将芳族二羟基化合物，碳酸二芳基酯，磷基支化剂和相对于芳族二羟基化合物的350-450ppb（重量）的催化剂混合并使其反应来制造第二原料的步骤; 以及对第一原料100重量份和第二原料1-20重量份进行熔融聚合的工序。 通过制造方法制造的支化聚碳酸酯由于催化剂含量低而具有优异的热稳定性，并表现出优异的颜色稳定性和迁移率。