Matted polyamide-pud
AssigneeLubrizol Advanced Materials, Inc.
InventorsGabor Erdodi, Naser Pourahmady, Jonathan J. Bird, Israel J. Skoff, Christopher Swech
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Abstract
Polymers are disclosed that incorporate portions of secondary or tertiary polyamide segments connected with polyisocyanates. These polymers have enhanced matting properties. The enhanced matting properties are from creating an inherently matt surface from the polymer without the use of any separate fine particle size matting additives. Conventional matting agents such as fine particle size silica usually results in loss of physical properties such as haze development and porosity in the coating from the matting agent. Composites and hybrids of these polymers and other polyamides, polyurethane with vinyl polymers (acrylates) are also disclosed and claimed.
Claims34
A colloidally stabilized polymer dispersion in an aqueous medium, said polymer containing a polyamide oligomer and multiple urethane linkages and/or multiple urea linkages, said dispersion in aqueous medium comprising
- a) a polyamide oligomer having amine repeating units selected from
- wherein R1 to R5 are independently selected from H or a C1 to C4 linear or branched alkyl group, wherein the nitrogen terminal groups of said amine repeating units are reacted with reactive carbonyl repeating units having at least one carbonyl group capable of forming an amide linkage;
- b) at least one repeating unit from a polyisocyanate reacted with a hydroxyl or amine group;
- and
- c) a water dispersible group reacted into said polymer containing polyamide and multiple urethane and/or multiple urea linkages;
- further wherein said amine repeating units are a portion of said polymer containing polyamide and multiple urethane and/or urea linkages and said amine repeating units are from about 4 to about 15 wt. % of said polymer containing polyamide and multiple urethane and/or multiple urea linkages;
- and
- further wherein said polymer dispersion further comprises unsaturated free radically polymerizable monomeric reactants or polymeric species derived from said unsaturated free radically polymerizable monomeric reactants in an amount from about 10 to about 50 wt. % based on the total weight of polymer in said dispersion.
A colloidally stabilized polymer dispersion in an aqueous medium, said polymer containing a polyamide oligomer and multiple urethane linkages and/or multiple urea linkages, said dispersion in aqueous medium comprising
- a) a polyamide oligomer having amine repeating units selected from
- wherein R1 to R5 are independently selected from H or a C1 to C4 linear or branched alkyl group, wherein the nitrogen terminal groups of said amine repeating units are reacted with reactive carbonyl repeating units having at least one carbonyl group capable of forming an amide linkage;
- b) at least one repeating unit from a polyisocyanate reacted with a hydroxyl or amine group;
- and
- c) a water dispersible group reacted into said polymer containing polyamide and multiple urethane and/or multiple urea linkages;
- further wherein said amine repeating units are a portion of said polymer containing polyamide and multiple urethane and/or urea linkages and said amine repeating units are from about 4 to about 15 wt. % of said polymer containing polyamide and multiple urethane and/or multiple urea linkages;
- further comprising at least 10 wt. % of a second polymer based on the total weight of polymers in said polymer containing polyamide and multiple urethane linkages and/or multiple urea linkages in the form of a dispersion, said second polymer having less than 4 wt. % of amine repeating units of Formula I and Formula II;
- and
- wherein said second polymer is a polymer formed from free radically polymerizing unsaturated monomer(s).
A colloidally stabilized polymer dispersion in an aqueous medium, said polymer containing a polyamide oligomer and multiple urethane linkages and/or multiple urea linkages, said dispersion in aqueous medium comprising
- a) a polyamide oligomer having amine repeating units selected from
- wherein R1 to R5 are independently selected from H or a C1 to C4 linear or branched alkyl group, wherein the nitrogen terminal groups of said amine repeating units are reacted with reactive carbonyl repeating units having at least one carbonyl group capable of forming an amide linkage;
- b) at least one repeating unit from a polyisocyanate reacted with a hydroxyl or amine group;
- and
- c) a water dispersible group reacted into said polymer containing polyamide and multiple urethane and/or multiple urea linkages;
- further wherein said amine repeating units are a portion of said polymer containing polyamide and multiple urethane and/or urea linkages and said amine repeating units are from about 4 to about 15 wt. % of said polymer containing polyamide and multiple urethane and/or multiple urea linkages;
- further comprising at least 5 wt. % of polyamide having tertiary amide repeating units of the structure
- wherein Ra is the alkylene portion of the dicarboxylic acid and is a cyclic, linear, or branched alkylene of 2 to 58 carbon atoms, and
- wherein Rb is a linear or branched alkylene group of 2 to 60 carbon atoms and Rc and Rd are individually a linear or branched alkyl group of 1 to 8 carbon atoms, or Rc and Rd connect together to form a single linear or branched alkylene group of 1 to 8 carbon atoms.
Dependencies are inferred from the claim text.