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색상이 우수한 폴리에스테르의 제조방법Manufacturing method of polyester with excellent color
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
Claims (2)
테레프탈산과 에틸렌글리콜로 반응하여 중합도 95%이상이 에틸렌 테레프탈레이트로 이루어진 폴리에스터를 제조함에 있어서, Mn+CO함유량 2.0PPM이하이고 평균 분자량 500이상인 하기 일반식(Ⅰ)로 표시된 폴리알킬렌글리콜류의 1종 이상을 첨가하고 소광제와 형광증백제의 투입비를 0.2:0.01∼0.4:0+05로 하여 공중합시키는 것을 특징으로 하는 색상이 우수한 폴리에스테르의 제조방법.In preparing a polyester comprising 95% or more of ethylene terephthalate by reacting with terephthalic acid and ethylene glycol, a polyalkylene glycol represented by the following general formula (I) having an Mn + CO content of 2.0PPM or less and an average molecular weight of 500 or more A method for producing a polyester having excellent color, characterized by adding at least one kind and copolymerizing a quencher and a fluorescent brightener at a ratio of 0.2: 0.01 to 0.4: 0 + 05.(식중, R1은 탄소수 1∼20인 방향족계 탄화수소기 R2는 탄소수 2∼4인 알킬렌기 또는 치환 알킬렌기 M은 알카리 토금속류 n은 중합도로서 정수 m은 0또는 1이다.)(Wherein R 1 is a C1-C20 aromatic hydrocarbon group R 2 is a C2-C4 alkylene group or a substituted alkylene group M is an alkaline earth metal n is a degree of polymerization and the integer m is 0 or 1).제1항에 있어서, 상기 화합물(Ⅰ)의 투입량이 생성폴리머에 대해 0.5∼10중량부인 것을 특징으로 하는 색상이 우수한 폴리에스테르의 제조방법.The method for producing a polyester having excellent color according to claim 1, wherein the amount of the compound (I) added is 0.5 to 10 parts by weight based on the produced polymer.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910002926A1991-02-221991-02-22
Manufacturing method of polyester with excellent color
KR920016503A
(en)