US2005282940A1PendingUtilityA1

Inkjet ink binder and inkjet ink composition

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Assignee: HALLDEN-ABBERTON MICHAELPriority: Jun 22, 2004Filed: May 10, 2005Published: Dec 22, 2005
Est. expiryJun 22, 2024(expired)· nominal 20-yr term from priority
Inventors:Michael Paul Hallden-AbbertonStephen Crescimanno
C09D 11/30
51
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Claims

Abstract

An inkjet ink binder including an aqueous dispersion of polymer particles, the polymer comprising as polymerized units from 3 to 20 wt. % monoethylenically unsaturated acid monomer, based on polymer weight, and having a glass transition temperature (Tg) in the range of from −40° C. to 120° C., and the polymer particles having a volume average particle diameter as measured by dynamic light scattering of at least 35 nanometers greater than the weight average particle diameter as measured by capillary hydrodynamic fractionation is provided. An inkjet ink including the inkjet ink binder is also provided.

Claims

exact text as granted — not AI-modified
1 . An inkjet ink binder comprising an aqueous dispersion of polymer particles, said polymer comprising as polymerized units from 3 to 20 wt. % monoethylenically unsaturated acid monomer, based on polymer weight, and having a glass transition temperature (Tg) in the range of from −40° C. to 120° C., and said polymer particles having a volume average particle diameter as measured by dynamic light scattering (DLS) of at least 35 nanometers greater than the weight average particle diameter as measured by capillary hydro-dynamic fractionation (CHDF).  
   
   
       2 . The inkjet ink binder of  claim 1  wherein said polymer particles have a volume average particle diameter as measured by DLS of at least 45 nanometers greater than the weight average particle diameter as measured by CHDF.  
   
   
       3 . The inkjet ink binder of  claim 1  wherein said polymer particles have a volume average particle diameter as measured by DLS of at least 55 nanometers greater than the weight average particle diameter as measured by CHDF.  
   
   
       4 . The inkjet ink binder of  claim 1  wherein said polymer particles have been formed by emulsion polymerization in the presence of a neutralizer in the amount of from 15 to 75%, on an equivalents basis, based on said monoethylenically unsaturated acid monomer.  
   
   
       5 . The inkjet ink binder of  claim 4  wherein the neutralizer is a hard base.  
   
   
       6 . The inkjet ink binder of  claim 1  wherein said polymer particles have a weight average particle diameter of from 100 to 450 nanometers.

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