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Ronald A Gambale

from Salisbury, MA
Age ~86

Ronald Gambale Phones & Addresses

  • 13 Lena Maes Way, Salisbury, MA 01952 (978) 499-0146
  • 104 Flint St, Lynn, MA 01905 (781) 598-5687

Publications

Us Patents

Process For Preparing Colored Pigments

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US Patent:
6398858, Jun 4, 2002
Filed:
Mar 3, 2000
Appl. No.:
09/517857
Inventors:
Yuan Yu - North Billerica MA
Ronald J. Gambale - Wakefield MA
Robert M. Amici - Berlin MA
Assignee:
Cabot Corporation - Boston MA
International Classification:
C09B 6700
US Classification:
106 3164, 106412, 106413, 106472, 106476, 106493, 106494, 106495, 106496, 106497, 106498
Abstract:
The present invention relates to a process for preparing surface-modified colored pigments. The process includes the steps of: preparing a reaction batch comprising a treating agent and a diazotizing agent; adding a colored pigment to the batch; and mixing the colored pigment and the batch under high shear conditions to form a reaction product comprising a surface-modified colored pigment. The treating agent has an organic group which comprises at least one diazotizable group. In a preferred embodiment the diazotizable group comprises a) at least one aromatic group or at least one C -C alkyl group, and b) at least one ionic group, ionizable group, nonionic group, or a mixture thereof. The surface-modified colored pigments prepared by the process of the present invention have been found useful in aqueous or solvent based compositions and particularly in ink jet ink compositions.

Process For Preparing Modified Pigments

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US Patent:
6699319, Mar 2, 2004
Filed:
May 6, 2002
Appl. No.:
10/140014
Inventors:
Curtis E. Adams - Watertown MA
Ronald J. Gambale - Wakefield MA
Assignee:
Cabot Corporation - Boston MA
International Classification:
C09C 156
US Classification:
106476, 106412, 106493, 106494, 106495, 106496, 106497, 106498, 106499, 106505, 523215, 524495
Abstract:
The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.

Process For Preparing Modified Pigments

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US Patent:
6911073, Jun 28, 2005
Filed:
May 5, 2003
Appl. No.:
10/429513
Inventors:
Curtis E. Adams - Watertown MA, US
Ronald J. Gambale - Wakefield MA, US
Assignee:
Cabot Corporation - Boston MA
International Classification:
C09C001/56
C09B069/10
US Classification:
106476, 106412, 106493, 106494, 106495, 106496, 106497, 106498, 106499, 106505, 523215, 524495, 524514, 525192
Abstract:
The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.
Ronald A Gambale from Salisbury, MA, age ~86 Get Report