Patent · US Expired

Tubular polymerization reactors and polymers made therein

US6596241B2 · kind B2 · utility

10Cited by
1References
7Claims
0Family size

Assignee

Inventor

Key dates

Filing dateDec 19, 2001
Grant dateJul 22, 2003
Priority date—
Expiry dateDec 19, 2021

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S526/922
  • 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.