Patent · US Expired

Cell growth substrate polymer

US5994133A · kind A · utility

28Cited by
2References
24Claims
0Family size

Assignees

Inventors

Key dates

Filing dateJan 6, 1998
Grant dateNov 30, 1999
Priority date
Expiry dateJan 6, 2018

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC12N2533/30
  • WIPO fieldBiotechnology
  • WIPO sectorChemistry

Abstract

Cell growth substrate polymers are described which comprise a macromonomer of the formula (I): Q-(PFPE-L).sub.n-1 -PFPE-Q, wherein n is at least 1.0; each PFPE may be the same or different and is a perfluorinated polyether of the formula (II): --OCH.sub.2 CF.sub.2 O (CF.sub.2 CF.sub.2 O).sub.x (CF.sub.2 O).sub.y CF.sub.2 CH.sub.2 O--, wherein the CF.sub.2 CF.sub.2 O and CF.sub.2 O units may be randomly distributed or distributed as blocks throughout the chain and wherein x and y may be the same or different such that the molecular weight of the perfluoropolyether is in the range of from 242 to 4000, L is a difunctional linking group; and Q at each end of the macromonomer is the same or different and is a polymerizable group. The cell growth substrate polymers may be used in the production of comeal implants.

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