Rheology modifier polymer

A polymer made by copolymerization of a mixture of polymerizable monomers, said polymerizable monomers which copolymerize to form the polymer comprising:

• (a) one or more first monomers each independently selected from monomers according to structure (XIII):
• wherein:
• R19 is H or methyl,
• i is an integer of from 10 to 40, and
• j is an integer of from 1 to 20,
• (b) one or more second monomers copolymerizable with the first monomer, wherein:
• the one or more second monomers are each independently selected from monomers according to structure (XX):
• wherein
• R21 is linear (C5-C50)alkyl,
• R25 is methyl or ethyl
• p and q are independently integers of from 2 to 5,
• each r is independently an integer of from 1 to about 80,
• each s is independently an integer of from 0 to about 80, and
• t is an integer of from 1 to about 50, provided that the product obtained by multiplying the integer t times the sum of r+s is from 2 to about 100, and
• (c) one or more third monomers each independently selected from monocarboxylic acid monomers according to structure (XXII):
• R34—R32—R31 (XXII)
• wherein:
• R31 is a moiety that comprises a carboxylic acid, sulfonic acid, or phosphoric acid group,
• R32 is absent or is a bivalent linking group, and
• R34 is a moiety having a site of ethylenic unsaturation, and
• (d) one or more fourth monomers each independently selected from compounds according to structure (XXIV):
• R43—R42—R41 (XXIV)
• wherein:
• R41 is alkyl, hydroxyalkyl, alkoxyalkyl, cycloalkyl, aryl, aralkyl, or aryloxy,
• R42 is absent or is a bivalent linking group, and
• R43 is a moiety having a site of ethylenic unsaturation.