Patent · US Expired

Method of preparing a low molecular weight paper size polymer by continuous polymerization in the absence of initiator

US4060679A · kind A · utility

11Cited by

12References

5Claims

0Family size

Assignee

BASF SE

Inventors

Herbert Naarmann · Wattenheim, DE
Fritz Reichel · Hirschberg, DE
Hermann Gausepohl · Mutterstadt, DE

Key dates

Filing date	Apr 9, 1976
Grant date	Nov 29, 1977
Priority date	—
Expiry date	Apr 9, 1996

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31906
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A paper size comprising a water-soluble salt of a copolymer of from 30 to 85% by weight of olefins of 2 to 12 carbon atoms, having a terminal double bond, and/or vinyl ethers, and from 15 to 70% by weight of basic acrylic and/or methacrylic compounds, which copolymer has a molecular weight of from 600 to 4,500 and is manufactured by continuous copolymerization at from 130.degree. to 320.degree. C.

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