US4499231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pellicle compositions and pellicles thereof for projection printing
Assignee: Avantor Performance Materials LLC
•
Filing: 1983-03-22
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Granted: 1985-02-12
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Expires: 2003-03-22
Abstract
Abstract A pellicle for use in projection printing comprises a pellicle in which the transparent film is formed from a polyvinyl butyral resin or from a casting composition which is a mixture of a polyvinyl butyral resin and a dispersion of colloidal silica and a silicone resin which is a lower aliphatic alcohol-water solution of the partial condensate of a silanol. A pellicle employing such films are useful in the near, mid and deep UV regions.
Inventors
- 👤 Irl E. Ward
- 👤 Philip M. Papoojian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:23
CPC Classifications
G; G03; G03F; G03F1/00; G03F1/62; C; C08; C08L; C08L83/00; C08L83/04
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
103 words
A transparent pellicle film for use in projection printing comprising a film formed from a mixture consisting essentially of a polyvinyl butryal resin of the formula ##STR4## wherein x is ≦0.12, y is ≦0.02 and z is ≧0.88, with a dispersion of colloidal silica in lower aliphatic alcohol-water solution of the partial condensate of silanol, the major portion of the partial condensate obtained by the condensation of CH 3 Si(OH) 3 and a minor portion being obtained from condensation with a member selected from the group consisting of C 2 H 5 Si(OH) 3 ; C 3 H 7 Si(OH) 3 ; ##STR5##
Claim 2
Dependent Claim
103 words
A transparent pellicle film for use in projection printing comprising a film formed from a mixture consisting essentially of a polyvinyl butryal resin of the formula ##STR4## wherein x is ≦0.12, y is ≦0.02 and z is ≧0.88, with a dispersion of colloidal silica in lower aliphatic alcohol-water solution of the partial condensate of silanol, the major portion of the partial condensate obtained by the condensation of CH 3 Si(OH) 3 and a minor portion being obtained from condensation with a member selected from the group consisting of C 2 H 5 Si(OH) 3 ; C 3 H 7 Si(OH) 3 ; ##STR5##
Claim 3
Dependent Claim
30 words
A pellicle film of claim 1 wherein the mixture comprises from about 10 to about 50% weight/weight of the dispersion solids based on the weight of the polyvinyl butyral solids.
Claim 4
Dependent Claim
20 words
A pellicle film of claim 2 wherein the mixture comprises about 10 to about 35% weight/weight of the dispersion solids.
Claim 5
Dependent Claim
17 words
A pellicle film of claim 2 wherein the mixture comprises about 15% weight/weight of the dispersion solids.
Claim 6
Dependent Claim
24 words
A pellicle film of claim 2 wherein x is from about 0.09 to about 0.12 and y is from about 0.0 to about 0.02.
Claim 7
Dependent Claim
24 words
A pellicle film of claim 3 wherein x is from about 0.09 to about 0.12 and y is from about 0.0 to about 0.02.
Claim 8
Dependent Claim
24 words
A pellicle film of claim 4 wherein x is from about 0.09 to about 0.12 and y is from about 0.0 to about 0.02.
Claim 9
Dependent Claim
85 words
A castable solution for producing a transparent pellicle film comprising a mixture consisting essentially of a polyvinyl butryal resin of the formula ##STR6## wherein x is ≦0.12, y is ≦0.02 and z is ≧0.88, with a dispersion of colloidal silica in lower aliphatic alcohol-water solution of the partial condensate of silanol, the major portion of the partial condensate obtained by the condensation of CH 3 Si(OH) 3 and a minor portion being obtained from condensation with a member selected from the group consisting of ##STR7##
Claim 10
Dependent Claim
85 words
A castable solution for producing a transparent pellicle film comprising a mixture consisting essentially of a polyvinyl butryal resin of the formula ##STR6## wherein x is ≦0.12, y is ≦0.02 and z is ≧0.88, with a dispersion of colloidal silica in lower aliphatic alcohol-water solution of the partial condensate of silanol, the major portion of the partial condensate obtained by the condensation of CH 3 Si(OH) 3 and a minor portion being obtained from condensation with a member selected from the group consisting of ##STR7##
Claim 11
Dependent Claim
31 words
A castable solution of claim 8 wherein the mixture comprises from about 10 to about 50% to weight/weight of the dispersion solids based on the weight of the polyvinyl butyral solids.
Claim 12
Dependent Claim
20 words
A castable solution of claim 9 wherein the mixture comprises about 10 to about 35% weight/weight of the dispersion solids.
Claim 13
Dependent Claim
17 words
A castable solution of claim 9 wherein the mixture comprises about 15% weight/weight of the dispersion solids.
Claim 14
Dependent Claim
23 words
A castable solution of claim 9 wherein x is from about 0.09 to about 0.12 and y is from 0.0 to about 0.02.
Claim 15
Dependent Claim
24 words
A castable solution of claim 10 wherein x is from about 0.09 to about 0.12 and y is from about 0.0 to about 0.02.
Claim 16
Dependent Claim
24 words
A castable solution of claim 11 wherein x is from about 0.09 to about 0.12 and y is from about 0.0 to about 0.02.
Claim 17
Dependent Claim
100 words
A pellicle for use in projection printing comprising a transparent film mounted in a pellicle mounting ring and wherein the film is formed from a mixture consisting essentially of a polyvinyl butyral resin of the formula: ##STR8## wherein x is ≦0.12, y is ≦0.02 and z is ≧0.88, with a dispersion of colloidal silica in lower aliphatic alcohol-water solution of the partial condensate of a silanol, the major portion of the partial condensate obtained by the condensation of CH 3 Si(OH) 3 and a minor portion being obtained from condensation with a member selected from the group consisting of ##STR9##
Claim 18
Dependent Claim
100 words
A pellicle for use in projection printing comprising a transparent film mounted in a pellicle mounting ring and wherein the film is formed from a mixture consisting essentially of a polyvinyl butyral resin of the formula: ##STR8## wherein x is ≦0.12, y is ≦0.02 and z is ≧0.88, with a dispersion of colloidal silica in lower aliphatic alcohol-water solution of the partial condensate of a silanol, the major portion of the partial condensate obtained by the condensation of CH 3 Si(OH) 3 and a minor portion being obtained from condensation with a member selected from the group consisting of ##STR9##
Claim 19
Dependent Claim
29 words
A pellicle of claim 15 wherein the mixture comprises from about 10 to about 50% weight/weight on the dispersion solids based on the weight of the polyvinyl butyral solids.
Claim 20
Dependent Claim
20 words
A pellicle film of claim 16 wherein the mixture comprises about 10 to about 35% weight/weight of the dispersion solids.
Claim 21
Dependent Claim
17 words
A pellicle film of claim 16 wherein the mixture comprises about 15% weight/weight of the dispersion solids.
Claim 22
Dependent Claim
24 words
A pellicle film of claim 16 wherein x is from about 0.09 to about 0.12 and y is from about 0.0 to about 0.02.
Claim 23
Dependent Claim
24 words
A pellicle film of claim 17 wherein x is from about 0.09 to about 0.12 and y is from about 0.0 to about 0.02.
Claim 24
Dependent Claim
24 words
A pellicle film of claim 18 wherein x is from about 0.09 to about 0.12 and y is from about 0.0 to about 0.02.
References Cited (Backward Citations)
US3294709A
Cited
US3986997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |