Invention Grant
- Patent Title: Copolymer comprising units of type a deriving from carboxylic acid monomers and units of type b deriving from sulfonic acid monomers
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Application No.: US15112799Application Date: 2015-01-20
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Publication No.: US11384315B2Publication Date: 2022-07-12
- Inventor: Céline Orizet , David James Wilson , Julie Clavier , Eric Van Gramberen
- Applicant: RHODIA OPERATIONS
- Applicant Address: FR Paris
- Assignee: RHODIA OPERATIONS
- Current Assignee: RHODIA OPERATIONS
- Current Assignee Address: FR Paris
- Agency: Vorys, Sater, Seymour and Pease LLP
- Priority: EP14305084 20140121
- International Application: PCT/IB2015/050435 WO 20150120
- International Announcement: WO2015/110956 WO 20150730
- Main IPC: C11D3/37
- IPC: C11D3/37 ; C08F293/00 ; C08F228/02 ; C08F220/58

Abstract:
The present invention relates to a copolymer comprising units of type A deriving from carboxylic acid monomers and units of type B deriving from sulfonic acid monomers, said units of type A and B representing more than 80 mol % of the total moles of units in the copolymer, characterized in that it comprises at least: —one first block formed of at least 95 mol % of units of type A and having a degree of polymerization DP1 comprised between 5 and 150; and —one second block formed of at least 95 mol % of units of type A and B with a molar ratio of units of type A to units of type B greater or equal to 1, wherein said units of type A and units of type B are statistically distributed, said second block having a degree of polymerization DP2 such that DP2/DP1≥1. It also relates to new detergent compositions comprising such a copolymer, and to the use of this copolymer in a detergent composition, especially an ADW composition, to prevent, limit or eliminate the filming phenomena.
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