1,2-Butadiene → Benzene, ethenyl-, polymer with 1,3-butadiene

HRID 1732907

반응식

HRID 1732907 반응식
[CH2:1]([Li])[CH2:2][CH2:3][CH3:4].[CH2:6]=[C:7]=[CH:8][CH3:9]>>[CH2:1]=[CH:2][CH:3]=[CH2:4].[CH2:4]=[CH:3][C:2]1[CH:1]=[CH:9][CH:8]=[CH:7][CH:6]=1

참가 물질

3

반응물 2

HCID 115351,2-ButadieneHCID 178418339Butyllithium

생성물 1

HCID 62697Benzene, ethenyl-, polymer with 1,3-butadiene

실험 절차

75/25 Butadiene/styrene random copolymer was polymerized continuously using multichelic initiator in a reactor train consisting of two 3/8" diameter by 11" long Kenics static mixers as the scavenging reactor means, followed by a 5 gallon capacity stirred polymerization reactor. Fast poisons in the monomer, diluent, randomizer, and gel inhibitor were inactivated by adding to the feedstream in the scavenging reactors 0.02 phm n-butyllithium. This scavenging treatment allowed an increase in the 1,2-butadiene gel inhibitor level from 0.05 phm, which is typically used in this polymerization, to 0.08 phm while maintaining the desired 90-100 Mooney viscosity (ML-4 as described in ASTM D1646-74). This increase in gel inhibitor resulted in a 575-hour gel-free polymerization.

후처리

  1. custompolymerization reactor
  2. customis typically used in this polymerization, to 0.08 phm
  3. temperaturewhile maintaining the
  4. temperatureThis increase in gel inhibitor
  5. customresulted in a 575-hour
  6. customgel-free polymerization

출처 및 근거

ORD 기록
ord-b1975b74bf3c45f997fd9775ed202173
출처 데이터셋
uspto-grants-1980_12
특허 번호
US04239870

연결된 노트

불러오는 중…