Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hercules LLC
Original Assignee
Betz Laboratories Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/101,139external-prioritypatent/US5374336A/en
Priority claimed from US08/217,037external-prioritypatent/US5415740A/en
Application filed by Betz Laboratories IncfiledCriticalBetz Laboratories Inc
Publication of CA2127011A1publicationCriticalpatent/CA2127011A1/en
Application grantedgrantedCritical
Publication of CA2127011CpublicationCriticalpatent/CA2127011C/en
A water soluble graft copolymer useful as retention and drainage aids in papermaking processes having the structure: wherein E is the repeat unit obtained after polymerization of and, .beta. ethylenically unsaturated compound, the molar percentage of a:b is from about 95:5 to 5:95, with the proviso that the sum of a and b equals 100%; G comprises the structure:
CA 21270111993-08-031994-06-29Water soluble graft copolymers and methods of use thereof
Expired - Fee RelatedCA2127011C
(en)
Water-soluble terpolymers made from meth(acrylamide), ethylenically unsaturated, aliphatic carboxylic acid or salt, and polyvinyl monomer, and their use as dry strength additives for paper