US4020193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a non-glossy film
Assignee: PPG Industries Inc
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Filing: 1973-07-10
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Granted: 1977-04-26
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Expires: 1993-07-10
Abstract
Abstract A novel method of preparing a strong, non-glossy material comprises subjecting a composition comprising an unsaturated polyester, an ethylenically unsaturated monomer and a peroxide catalyst to actinic light to cure. In the preferred embodiment, the material comprises pigments and accelerators for room temperature cure of polyester resins. The materials are useful as films and coatings.
Inventors
- 👤 Marco Wismer
- 👤 Earl E. Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:16
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0478; C08F2/00; C08F2/46; C08F2/48; C08F20/00; C08F20/02; C08F20/10; C08F20/20; C08F299/0407; C08F299/0421
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
The method of preparing a cured, non-glossy film comprising A. applying to a substrate a layer of a composition consisting essentially of 1. a polyester resin comprising a. from about 40 percent to about 90 percent by weight of unsaturated polyester prepared from an alpha,beta-ethylenically unsaturated polycarboxylic acid and polyhydric alcohol; and b. from about 10 percent to about 60 percent by weight of copolymerizable ethylenically unsaturated monomer; 2. at least about 5 percent by weight of ultraviolet-absorbing pigment; and 3. a peroxide catalyst selected from the group consisting of organic peroxides, organic hydroperoxides and esters thereof; and B. curing said layer by subjecting it to actinic light.
Claim 2
Independent Claim
108 words
The method of preparing a cured, non-glossy film comprising A. applying to a substrate a layer of a composition consisting essentially of 1. a polyester resin comprising a. from about 40 percent to about 90 percent by weight of unsaturated polyester prepared from an alpha,beta-ethylenically unsaturated polycarboxylic acid and polyhydric alcohol; and b. from about 10 percent to about 60 percent by weight of copolymerizable ethylenically unsaturated monomer; 2. at least about 5 percent by weight of ultraviolet-absorbing pigment; and 3. a peroxide catalyst selected from the group consisting of organic peroxides, organic hydroperoxides and esters thereof; and B. curing said layer by subjecting it to actinic light.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein the unsaturated monomer is styrene.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the peroxide catalyst is methyl ethyl ketone peroxide.
Claim 5
Dependent Claim
11 words
The method of claim 1 wherein the pigment is titanium dioxide.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein the composition also comprises an accelerator for the cure of the polyester resin.
Claim 7
Dependent Claim
12 words
The method of claim 5 wherein the accelerator is a cobalt salt.
Claim 8
Dependent Claim
12 words
The method of claim 1 wherein the composition also comprises a photosensitizer.
Claim 9
Dependent Claim
12 words
The method of claim 7 wherein the photosensitizer is benzoin methyl ether.
References Cited (Backward Citations)
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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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |