Polymers containing complex hydrophobic groups
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsRichard D. Jenkins, David R. Bassett, Gregory D. Shay
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Abstract
Water-soluble polymers are disclosed which comprise hydrophobic segments, each segment containing at least one hydrophobic group or comlex hydrophobic group covalently bonded to the polymer, wherein the polymer has an amount of complex hydrophobic groups sufficient to provide for enhanced thickening of aqueous solutions containing the polymer. These polymers provide superior thickening and leveling in aqueous systems through hydrophobic associations, and aid suspension of particulate materials in non-aqueous systems.
Claims19
A process for producing a water-soluble polymer which comprises either:
- (a) bonding (1) a functional group-containing hydrophobic reactant that has at least one complex hydrophobic group and that can have a hydrophobe bunch of at least two hydrophobic groups, complex hydrophobic groups or mixtures with (2) a water-soluble polymer reactant containing a complementary functional group whereby said hydrophobic reactant is covalently bonded to the polymer;
- or
- (b) interreacting (1) a functional group-containing hydrophobic reactant that has at least one complex hydrophobic group and that can have a hydrophobe bunch of at least two hydrophobic groups, complex hydrophobic groups or mixtures with (2) a complementary functional water-soluble prepolymer or monomer whereby the two are copolymerized to provide a water-soluble polymer containing said hydrophobic reactant;
- or
- (c) interreacting (1) a functional group-containing hydrophobic reactant that has at least one complex hydrophobic and optionally hydrophobic group with (2) a complementary functional water-soluble prepolymer whereby the two are copolymerized to provide a water-soluble polymer having at least one complex hydrophobic group and at least one hydrophobic bunch containing at least two hydrophobic groups, complex hydrophobic groups or mixtures.
A process for producing a thickened aqueous solution by providing a water solution with an effective thickening amount of a water-soluble polymer which comprises segments, each segment containing at least one hydrophobic or complex hydrophobic group covalently bonded to the polymer, wherein the polymer has an amount of complex hydrophobic groups sufficient to provide for enhanced thickening of aqueous solutions containing the polymer.
A process for thickening an aqueous composition comprising adding to the composition a polymer which comprises hydrophobic segments, each segment containing at least one hydrophobic group or complex hydrophobic group covalently bonded to the polymer, wherein the polymer has an amount of complex hydrophobic groups sufficient to provide for enhanced thickening of aqueous solutions containing the polymer when compared with a polymer of essentially the same structure but which has only hydrophobic groups other than complex hydrophobic groups, wherein said complex hydrophobic group is derived from a compound represented by the formula selected from:
- ##STR18## wherein R.sub.1 and R.sub.2 are the same or different and are hydrogen or a substituted or unsubstituted monovalent hydrocarbon residue, R.sub.3 is a substituted or unsubstituted divalent or trivalent hydrocarbon residue, each R.sub.4 is the same or different and is a substituted or unsubstituted divalent hydrocarbon residue, each R.sub.5 is the same or different and is a substituted or unsubstituted divalent hydrocarbon residue, R.sub.6 is hydrogen, a substituted or unsubstituted monovalent hydrocarbon residue or an ionic substituent a and b are the same or different and are a value of 0 or 1, and x and y are the same or different and are a value of 0 or greater;
- provided at least two of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are a hydrocarbon residue having greater than 2 carbon atoms in the case of R.sub.1, R.sub.2 and R.sub.6 or having greater than 2 pendant carbon atoms in the case of R.sub.3, R.sub.4 and R.sub.5 ;
- and ##STR19## wherein R.sub.7 and R.sub.8 are the same or different and are hydrogen or a substituted or unsubstituted monovalent hydrocarbon residue, R.sub.9 and R.sub.12 are the same or different and are a substituted or unsubstituted divalent or trivalent hydrocarbon residue, each R.sub.10 is the same or different and is a substituted or unsubstituted divalent hydrocarbon residue, each R.sub.13 is the same or different and is a substituted or unsubstituted divalent hydrocarbon residue, R.sub.11 and R.sub.14 are the same or different and are hydrogen, a substituted or unsubstituted monovalent hydrocarbon residue or an ionic substituent, R.sub.15 is a substituted or unsubstituted divalent hydrocarbon residue, d and e are the same or different and are a value 0 or 1, and f and g are the same or different and are a value of 0 or greater;
- provided at least two of R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11, R.sub.12, R.sub.13, R.sub.14 and R.sub.15 are a hydrocarbon residue having greater than 2 carbon atoms in the case of R.sub.7, R.sub.8, R.sub.11 an R.sub.14 or having greater than 2 pendant carbon atoms in the case of R.sub.9, R.sub.10, R.sub.12, R.sub.13 and R.sub.15.
Dependencies are inferred from the claim text.