Daniel W Lundy

US Patent:

60635509, May 16, 2000

Filed:

Apr 29, 1998

Appl. No.:

9/069517

Inventors:

Daniel E. Lundy - Placentia CA
Robert Barr - Laguna Niguel CA

Assignee:

Morton International, Inc. - Chicago IL

International Classification:

G03F 732

US Classification:

430331

Abstract:

An alkaline aqueous developing solution for developing photoresists or the like contains, as an anti-scum agent, an ethoxylated surfactant having the general formula: R--[O--(CH. sub. 2 --Ch. sub. 2 --O). sub. n ]. sub. m --X (I) where R is a hydrophobic group, X is H or an anionic group, m is from 1 to 3, and n is at least about 15, preferably at least about 20, more preferably at least about 30.

US Patent:

59392380, Aug 17, 1999

Filed:

Jun 2, 1998

Appl. No.:

9/088561

Inventors:

Robert Barr - Laguna Niguel CA
Daniel E. Lundy - Pomona CA
Eiji Kosaka - Gifu Prefecture, JP
Shigeru Murakami - Gifu Prefecture, JP

Assignee:

Morton International, Inc. - Chicago IL

International Classification:

G03C 500

US Classification:

4302811

Abstract:

The invention provides a negative-acting photoimageable composition comprising A) between about 30 and about 80 wt % based on total weight of A) plus B) of a binder polymer having acid functionality sufficient to render said photoimageable composition developable in alkaline aqueous solution, B) between about 20 and about 70 wt % based on total weight of A) plus B) of an addition-polymerizeable, non-gaseous. alpha. ,. beta. -ethylenically unsaturated compound(s) capable of forming a high polymer by free-radical initiated chain-propagating addition polymerization, at least about 50 mole percent of the. alpha. ,. beta. -ethylenically unsaturated moieties of B) being methacrylic moieties, and C) between about 0. 1 and about 20 wt % based on total weight of A) plus B) of a photoinitiator chemical system, the photoinitiator chemical system comprising between about 0. 005 and about 3 wt % relative to total weight of A) plus B) of triphenyphosphine and between about 0.

US Patent:

59521538, Sep 14, 1999

Filed:

Dec 1, 1997

Appl. No.:

8/980903

Inventors:

Daniel E. Lundy - Placentia CA
Robert Barr - Laguna Niguel CA

Assignee:

Morton International, Inc. - Chicago IL

International Classification:

G03C 500

US Classification:

4302811

Abstract:

A negative-acting photoimageable composition useful as a photoresist comprises an acid-functional binder, a photopolymerizable component, a photoinitiator chemical system comprising 9-phenyl acridine or a homologue thereof, and a dibenzoate plasticizer.

US Patent:

53209338, Jun 14, 1994

Filed:

Nov 20, 1992

Appl. No.:

7/979349

Inventors:

Daniel E. Lundy - Pomona CA
Robert K. Barr - Laguna Niguel CA
James G. Shelnut - Lake Forest CA

Assignee:

Morton International, Inc. - Chicago IL

International Classification:

G03C 173

US Classification:

430283

Abstract:

A photoimageable composition contains from 0. 5 to 5 wt. percent of a compound of the formula: ##STR1## wherein R=alkyl, aryl, aralkyl, alkenyl, alkynyl, and substituted forms thereof X=OR', SR', NR'. sub. 2, R' R'=H, R, CO--R, G=nothing or C. sub. 1 -C. sub. 8 alipathic hydrocarbon, and Y=COOH, PO. sub. 3 H, SO. sub. 3 H, SO. sub. 2 H and SOH. X'=R' to promote adhesion of the photoimageable composition to metal.

US Patent:

62485067, Jun 19, 2001

Filed:

Dec 4, 1998

Appl. No.:

9/205013

Inventors:

Daniel E. Lundy - Pomona CA
Robert Barr - Laguna Niguel CA

Assignee:

Nichigo-Morton - Ogaki

International Classification:

G03F 732

US Classification:

430329

Abstract:

An alkaline aqueous developing solution for developing photoresists or the like contains, as an anti-scum agent: A) between about 0. 05 and about 1. 0 wt % of a first surfactant or surfactant mixture, the first surfactant(s) having the general formula: R--O--(AO). sub. n --H where AO are alkylene oxide units selected from ethylene oxide units (CH. sub. 2 --CH. sub. 2 --O) and propylene oxide units (CH(CH. sub. 3)--CH. sub. 2 --O) or (CH. sub. 2 --CH(CH. sub. 3)--O) and mixtures of ethylene and propylene oxide units, either in the mixture of molecules, where R is a hydrophobic group, n is between about 8 and about 200, and B) as a second surfactant, between about 0. 05 and 1. 0 wt % of an organic salt having the formula: ##STR1## where R is an alkyl or aryl group, preferably phenyl, A is selected from carboxyl, sulfonyl, phosphonyl and mixtures thereof, preferably sulfonyl. M is a charge-balancing cation, and n is between 1 and about 200, preferably between 2 and about 100.

US Patent:

6322951, Nov 27, 2001

Filed:

Dec 11, 1998

Appl. No.:

9/209353

Inventors:

Daniel E. Lundy - Pomona CA
Robert K. Barr - Laguna Niguel CA
Edward J. Reardon - Laguna Niguel CA

Assignee:

Norton International, Inc. - Chicago IL

International Classification:

G03F 7033

US Classification:

4302841

Abstract:

A negative-acting photoimageable composition useful as a primary imaging resist in the manufacture of printed circuit boards comprises an acid-functional binder polymer, a photopolymerizable component, and a photoinitiator chemical system, in which all or a portion of the photopolymerizable component comprises a (meth)acrylate functional urethane oligomer, wherein the (meth)acrylate functionality is separated from the urethane linkage by at least two alkylene oxide groups and at least one ring-opened lactone group for improved flexibility, tenting strength, fine line adhesion, developer scumming, coupled with unexpectedly improved resistance to processing chemicals, such as alkaline developing solutions, acid etching solutions, and acid plating baths, and stripping ability in strong alkaline aqueous stripping solutions.

US Patent:

59521546, Sep 14, 1999

Filed:

May 29, 1998

Appl. No.:

9/086903

Inventors:

Robert Barr - Laguna Niguel CA
Daniel Lundy - Pomona CA
Stephen Wheeler - Irvine CA

Assignee:

Morton International, Inc. - Chicago IL

International Classification:

G03F 7033

US Classification:

4302841

Abstract:

The invention provides a negative-acting photoimageable composition comprising A) between about 30 and about 80 wt % based on total weight of A) plus B) of a binder polymer having acid functionality sufficient to render said photoimageable composition developable in alkaline aqueous solution, B) between about 20 and about 70 wt % based on total weight of A) plus B) of an addition-polymerizeable, non-gaseous. alpha. ,. beta. -ethylenically unsaturated compound(s) capable of forming a high polymer by free-radical initiated chain-propagating addition polymerization, at least about 50 mole percent of the. alpha. ,. beta. -ethylenically unsaturated moieties of B) being methacrylic moieties, and C) between about 0. 1 and about 20 wt % based on total weigh of A) plus B) of a photoinitiator chemical system. Photopolymerizable component B comprises, at between about 1 and about 70 wt.

US Patent:

61662453, Dec 26, 2000

Filed:

Mar 8, 2000

Appl. No.:

9/521506

Inventors:

Daniel E. Lundy - Pomona CA
Robert K. Barr - Laguna Niguel CA
Edward J. Reardon - Laguna Niguel CA

Assignee:

Shipley Company, L.L.C. - Marlborough MA

International Classification:

C07C 6726
C07C 6954
C08F26704

US Classification:

560209

Abstract:

A negative-acting photoimageable composition useful as a primary imaging resist in the manufacture of printed circuit boards comprises an acid-functional binder polymer, a photopolymerizable component, and a photoinitiator chemical system, in which the binder polymer has an anhydride functional backbone half-esterified with a meth(acrylate) functional hydroxy-terminated oligomer, wherein the meth(acrylate) functionality is separated from the half-ester linkage by at least two alkoxylate groups and at least one ring opened lactone group for improved stripping ability in strong alkaline aqueous stripping solutions, while maintaining good chemical resistance to other processing chemicals, such as alkaline developing solutions, acid etching solutions, and acid plating baths.