Patent ID: 11920110
Assignee: ROHM AND HAAS COMPANY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. An automatic dishwashing composition, comprising:
a builder;
a phosphonate;
a nonionic surfactant; and
a dispersant polymer, comprising:
(a) 2 to 20 wt % of structural units of formula I, wherein each R1 is independently selected from a hydrogen and a —C(O)CH3 group; and
(b) 82 to 98 wt % of structural units of formula II, wherein each R2 is independently selected from a hydrogen and a —CH3 group; wherein the dispersant polymer comprises ≤1 wt % of structural units of sulfonated monomer; and
wherein the automatic dishwashing composition contains ≤0.1 wt % of dispersant polymer having a lactone end group and wherein the dispersant polymer has a weight average molecular weight of 1,500 to 10,000 Daltons.