US4442198A
Expired / Lapsed
US
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Polymer composition having terminal alkene and terminal carboxyl groups
Assignee: National Starch and Chemical Investment Holding Corp
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Filing: 1982-09-29
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Granted: 1984-04-10
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Expires: 2002-09-29
Abstract
Abstract A polymer composition comprising a urethane having terminal unsaturation and a terminal carboxyl group and which is capable of further free radical polymerization has been synthesized. This polymer can be a liquid or a solid depending on the molecular weight and backbone of the polymer. This polymer as a liquid has been found to be very useful in producing printed circuit boards by photo resist processes.
Inventors
- 👤 Jung-Hsien Tsao
- 👤 Paul R. Hein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/81; C08G18/8141; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0823; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/122; Y10S430/136
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
123 words
A method for producing a photo resist comprising: (a) (1) providing a composition containing a polymer wherein the polymer consists essentially of a polymer having the formula: ##STR6## wherein R 1 is hydrogen, methyl or ethyl, R 2 is alkyl of from 1 to 6 carbon atoms, R 3 is alkyl, aryl or alkylaryl, (PE) is selected from the group consisting of polyethers, polyesters and mixtures thereof, x is an integer of from 2 to 50 and R 4 is alkyl, alkene, aryl or alkyl or alicyclic. (2) a photo initiator; (b) coating said composition onto at least a portion of a printed circuit board blank; and (c) contacting at least parts of said coated printed circuit board blank with actinic light radiation.
Claim 2
Independent Claim
123 words
A method for producing a photo resist comprising: (a) (1) providing a composition containing a polymer wherein the polymer consists essentially of a polymer having the formula: ##STR6## wherein R 1 is hydrogen, methyl or ethyl, R 2 is alkyl of from 1 to 6 carbon atoms, R 3 is alkyl, aryl or alkylaryl, (PE) is selected from the group consisting of polyethers, polyesters and mixtures thereof, x is an integer of from 2 to 50 and R 4 is alkyl, alkene, aryl or alkyl or alicyclic. (2) a photo initiator; (b) coating said composition onto at least a portion of a printed circuit board blank; and (c) contacting at least parts of said coated printed circuit board blank with actinic light radiation.
Claim 3
Dependent Claim
51 words
A method for producing a photo resist as in claim 1 wherein said composition contains an additive having the formula: ##STR7## wherein R 4 is hydrogen, methyl or ethyl, R 5 is alkyl of from 1 to 6 carbon atoms and R 6 is alkyl, alkene, aryl or alkyl or alicyclic.
Claim 4
Dependent Claim
32 words
A method for producing a photo resist as in claim 1 wherein said photoinitiator is selected from the group consisting of benzophenone, acetophenone, acenaphthenequinone, O-methoxybenzophenone, dibenzosuberone, anthraquinone, hexanophenone and 2,2-dimethoxy 2-phenyl acetophenone.
Claim 5
Dependent Claim
18 words
A method for producing a photo resist as in claim 2 wherein said composition contains a multifunctional acrylate.
Claim 6
Dependent Claim
19 words
A method for producing a photo resist as in claim 4 wherein said composition additionally contains a multifunctional thiol.
Claim 7
Independent Claim
127 words
A method for producing a hot melt photo resist comprising: (a) (1) providing a composition containing a polymer having the formula: ##STR8## wherein R 1 is hydrogen, methyl or ethyl, R 2 is alkyl of from 1 to 6 carbon atoms, --PE-- is selected from the group consisting of polyethers, polyesters and mixtures thereof, x is an integer of from 2 to 50 and R 4 is alkyl, alkene, aryl or alicyclic, and (2) a photo initiator; (b) heating said composition to more than 50° C. and coating said composition onto at least a part of a circuit board blank; (c) cooling said coated circuit board blank to less than 50° C. (d) contacting at least part of said coated circuit board blank with actinic light radiation.
Claim 8
Independent Claim
127 words
A method for producing a hot melt photo resist comprising: (a) (1) providing a composition containing a polymer having the formula: ##STR8## wherein R 1 is hydrogen, methyl or ethyl, R 2 is alkyl of from 1 to 6 carbon atoms, --PE-- is selected from the group consisting of polyethers, polyesters and mixtures thereof, x is an integer of from 2 to 50 and R 4 is alkyl, alkene, aryl or alicyclic, and (2) a photo initiator; (b) heating said composition to more than 50° C. and coating said composition onto at least a part of a circuit board blank; (c) cooling said coated circuit board blank to less than 50° C. (d) contacting at least part of said coated circuit board blank with actinic light radiation.
Claim 9
Dependent Claim
33 words
A method for producing a hot melt photo resist as in claim 2 wherein said photoinitiator is selected from the group consisting of benzophenone, acetophenone, acenaphthenequinone, O-methoxybenzophenone, dibenzosubenone, anthraquinone, hexanophenone and 2,2-dimethoxy-2-phenyl acetophenone.
Claim 10
Dependent Claim
20 words
A method for producing a hot melt photo resist as in claim 6 wherein said composition contains a multifunctional acrylate.
Claim 11
Dependent Claim
20 words
A method for producing a hot melt photo resist as in claim 8 wherein said composition contains a multifunctional thiol.
Claim 12
Independent Claim
167 words
A method for producing a photo resist comprising: (a) (1) providing a composition containing a polymer having the formula: ##STR9## wherein R 1 is hydrogen, methyl or ethyl, R 2 is alkyl of from 1 to 6 carbon atoms, R 3 is alkyl, aryl or alkylaryl, (PE) is selected from the group consisting of polyethers, polyesters and mixtures thereof, x is an integer of from 2 to 50 and R 4 is alkyl, alkene, aryl or alkyl or alicyclic; (2) a photo initiator; (3) an additive having the formula: ##STR10## wherein R 4 is hydrogen, methyl or ethyl, R 5 is alkyl of from 1 to 6 carbon atoms and R 6 is alkyl, alkene, aryl or alkyl or alicyclic; (4) and chain bridging agents selected from the group consisting of multifunctional acrylates and thiols; (b) coating said composition onto at least a portion of a printed circuit board blank; and (c) contacting at least parts of said coated printed circuit board blank with actinic light radiation.
Claim 13
Independent Claim
167 words
A method for producing a photo resist comprising: (a) (1) providing a composition containing a polymer having the formula: ##STR9## wherein R 1 is hydrogen, methyl or ethyl, R 2 is alkyl of from 1 to 6 carbon atoms, R 3 is alkyl, aryl or alkylaryl, (PE) is selected from the group consisting of polyethers, polyesters and mixtures thereof, x is an integer of from 2 to 50 and R 4 is alkyl, alkene, aryl or alkyl or alicyclic; (2) a photo initiator; (3) an additive having the formula: ##STR10## wherein R 4 is hydrogen, methyl or ethyl, R 5 is alkyl of from 1 to 6 carbon atoms and R 6 is alkyl, alkene, aryl or alkyl or alicyclic; (4) and chain bridging agents selected from the group consisting of multifunctional acrylates and thiols; (b) coating said composition onto at least a portion of a printed circuit board blank; and (c) contacting at least parts of said coated printed circuit board blank with actinic light radiation.
Claim 14
Independent Claim
114 words
A method for producing a photoresist comprising: (a) (1) providing a composition containing a polymer composition wherein the polymer composition consists essentially of a polymer having a molecular weight of about 250 to 10,000 and acid content of about 0.1 to 4.0 millequivalents/gram comprising a terminal carboxyl group at one end and a single terminal alkene unsaturation at the other end, said carboxyl group and alkene unsaturation being in a ratio on said polymer of about 1 to 1. (2) a photoinitiator; (b) coating said composition onto at least a portion of a printed circuit board blank; and (c) contacting at least parts of said coated printed circuit board blank with actinic light radiation.
Claim 15
Independent Claim
114 words
A method for producing a photoresist comprising: (a) (1) providing a composition containing a polymer composition wherein the polymer composition consists essentially of a polymer having a molecular weight of about 250 to 10,000 and acid content of about 0.1 to 4.0 millequivalents/gram comprising a terminal carboxyl group at one end and a single terminal alkene unsaturation at the other end, said carboxyl group and alkene unsaturation being in a ratio on said polymer of about 1 to 1. (2) a photoinitiator; (b) coating said composition onto at least a portion of a printed circuit board blank; and (c) contacting at least parts of said coated printed circuit board blank with actinic light radiation.
Claim 16
Dependent Claim
51 words
A method for producing a photo resist as in claim 11 wherein said composition contains an additive having the formula: ##STR11## wherein R 4 is hydrogen, methyl or ethyl, R 5 is alkyl of from 1 to 6 carbon atoms and R 6 is alkyl, alkene, aryl or alkyl or alicyclic.
Claim 17
Dependent Claim
32 words
A method for producing a photo resist as in claim 11 wherein said photoinitiator is selected from the group consisting of benzophenone, acetophenone, acenaphthenequinone, O-methoxybenzophenone, dibenzosuberone, anthraquinone, hexanophenone and 2,2-dimethoxy 2-phenyl acetophenone.
Claim 18
Dependent Claim
18 words
A method for producing a photo resist as in claim 12 wherein said composition contains a multifunctional acrylate.
Claim 19
Dependent Claim
19 words
A method for producing a photo resist as in claim 14 wherein said composition additionally contains a multifunctional thiol.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-10 | 1987-10-10 | 1988-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-10 | 1991-10-10 | 1992-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-10 | 1995-10-10 | 1996-04-10 | $7700.00 | Window Closed / Lapsed |