Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1994-10-12
1999-07-20
Hertzog, Ardith
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510476, 510509, C11D 337, C11D 310
Patent
active
059256109
ABSTRACT:
Maleate copolymers comprise less than 1% residual total free monomer and have a weight average molecular weight of 1,000 to 4,000. The copolymer comprises at least 50 mole percent maleate, 10 to 50 mole percent acrylate monomer and 1 to 10 mole percent of at least one non-ionic comonomer. The copolymers are useful in inhibiting deposition of water hardness ions, in detergents and as dispersants in aqueous slurries. Copolymers are prepared by an aqueous solution polymerization process, comprising the steps of initially neutralizing at least 70%, on a molar basis, of the charge of a maleate monomer, followed by the slow addition of at least one polymerizable comonomer, together with an oxidative free radical initiator and a suitable metallic ion reductant, for synthesis over at least a three hour period at 80 to 100.degree. C., followed by the addition of more initiator.
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Austin Anne-Marie B.
Belcher, deceased James H.
Carrier Allen M.
Standish Michael L.
Hertzog Ardith
National Starch and Chemical Investment Holding Corporation
Thallemer John D.
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