Multi-purpose polymers, methods and compositions

Details Multi-purpose polymers, methods and compositions Multi-purpose polymers, methods and compositions

2007-10-30

2007-10-30

Pezzuto, Helen L (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S287000, C526S288000, C526S307500, C526S307600, C526S307700, C526S318400, C526S318500, C526S320000, C526S328500, C526S329600

Reexamination Certificate

active

10338275

ABSTRACT:
Disclosed are multi-purpose alkali-swellable and alkali soluble associative polymers, which are the polymerization product of a monomer mixture comprising: (a) at least one acidic vinyl monomer; (b) at least one nonionic vinyl monomer; (c) a first associative monomer having a first hydrophobic end group; (d) a monomer selected from the group consisting of a second associative monomer having a second hydrophobic end, a semihydrophobic monomer and a combination thereof; and, optionally, (e) one or more crosslinking monomers or chain transfer agents. When monomer (d) is an associative monomer, the first and second hydrophobic end groups of monomers (c) and (d) have significantly different hydrophobic and/or steric character from one another. The multi-purpose associative polymers surprisingly provide desirable Theological and aesthetic properties in aqueous media.

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