Patent · US Expired

Tubular polymerization reactors and polymers made therein

US6673878B2 · kind B2 · utility

13Cited by
3References
10Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJun 4, 2003
Grant dateJan 6, 2004
Priority date—
Expiry dateJun 4, 2023

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08F110/02
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Tubular reactor apparatus and processes are provided for improved polymerization including using chain transfer agents and multiple monomer feeds spaced lengthwise along the tubular reactor providing high conversions of monomer into polymer. The invention also relates to polymers made from such a tubular reactor apparatus and processes including those polymers having a low haze value, a density over 0.92 g/cm3 and/or having terminal carbonyl groups. The apparatus and methods uncouple or reduce the dependency between the monomer concentration and transfer agent concentration. The uncoupling in other embodiments may also be varied leading to multiple desirable effects.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.