Polymer Encyclopedia

Polyethyleneimine (PEI)

A practical guide to branched and linear architectures, solution properties, applications, and specification fields.

Grade Selection Framework

Choose PEI by architecture (branched or linear), molecular weight, solids content, and pH profile. Applications often include coatings, paper chemistry, adhesion promotion, and functional surface modification.

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What to Look for in a PEI Grade

  • Architecture and molecular-weight distribution
  • Solids content, pH, and viscosity
  • Application-specific performance requirements
  • Documentation needed for qualification

Request Details to Include in RFQ

  • Linear or branched PEI preference
  • Target molecular weight or viscosity range
  • Final use-case and substrate details
  • Required documentation package (COA, SDS, compliance)