US4122233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet screening agents and coating materials containing organosilane ester groups
Assignee: EIDP Inc
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Filing: 1977-06-24
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Granted: 1978-10-24
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Expires: 1997-06-24
Abstract
Abstract Monomers of the formulas ##STR1## WHEREIN R and R 1 are generally lower hydrocarbyl groups, R 2 is an aromatic ultraviolet light-absorbing moiety bonded by aromatic carbon, a is 0 or 1 and b is 1 or 2 are useful in the formulation of light- and abrasion-resistant coatings for polymers.
Inventors
- 👤 Stephen Proskow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:23
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/18; C07F7/1804; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C09; C09D; C09D127/00; C09D127/02; C09D127/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
130 words
A compound of one of the formulas ##STR9## R is a divalent hydrocarbon or hydrocarbon ether radical of up to 10 carbons; R 1 is an aliphatic hydrocarbon radical of less than 5 carbon atoms, an acyl radical of less than 5 carbon atoms, or a radical of the formula (CH 2 CH 2 O) n Z in which n is an integer of 1 to 8 and Z is an aliphatic hydrocarbon radical of less than 5 carbon atoms; R 2 is a stable, monovalent, N-heterocyclic hydroxyaromatic radical, containing up to 4 aromatic rings joined to oxygen through an aromatic carbon, of the type which absorbs light in the region of 2500-4000 A in an amount effective for stabilizing polymers against ultraviolet light; and a is 0 or 1.
Claim 2
Dependent Claim
130 words
A compound of one of the formulas ##STR9## R is a divalent hydrocarbon or hydrocarbon ether radical of up to 10 carbons; R 1 is an aliphatic hydrocarbon radical of less than 5 carbon atoms, an acyl radical of less than 5 carbon atoms, or a radical of the formula (CH 2 CH 2 O) n Z in which n is an integer of 1 to 8 and Z is an aliphatic hydrocarbon radical of less than 5 carbon atoms; R 2 is a stable, monovalent, N-heterocyclic hydroxyaromatic radical, containing up to 4 aromatic rings joined to oxygen through an aromatic carbon, of the type which absorbs light in the region of 2500-4000 A in an amount effective for stabilizing polymers against ultraviolet light; and a is 0 or 1.
Claim 3
Dependent Claim
16 words
A compound of claim 1 wherein R 2 is selected from the group consisting of ##STR10##
Claim 4
Dependent Claim
218 words
In a coating composition formed from 10-90% by weight of polysilicic acid and/or a hexa(alkoxyalkyl)melamine and 10-90% by weight of a 1:1 copolymer of chlorotrifluoroethylene or tetrafluoroethylene and an ω-hydroxyalkyl vinyl ether, all based on the combined weight of polysilicic acid, calculated as silica, and/or hexa(alkoxyalkyl)melamine and copolymer, the improvement which comprises increasing resistance to ultraviolet light by incorporating in the composition, 0.5-35% by weight, based on the combined weight of polysilicic acid, calculated as silica, and/or hexa(alkoxyalkyl)melamine and copolymer, of an added compound of one of the formulas ##STR11## R is a divalent hydrocarbon or hydrocarbon ether radical of up to 10 carbons; R 1 is an aliphatic hydrocarbon radical of less than 5 carbon atoms, an acyl radical of less than 5 carbon atoms, or a radical of the formula (CH 2 CH 2 O) n Z in which n is an integer of 1 to 8 and Z is an aliphatic hydrocarbon radical of less than 5 carbon atoms; R 2 is a stable, monovalent or divalent hydroxyl-aromatic radical, containing up to 4 aromatic rings joined to oxygen through an aromatic carbon, of the type which absorbs light in the region of 2500-4000 A in an amount effective for stabilizing polymers against ultraviolet light; a is 0 or 1; and b is 1 or 2.
Claim 5
Dependent Claim
218 words
In a coating composition formed from 10-90% by weight of polysilicic acid and/or a hexa(alkoxyalkyl)melamine and 10-90% by weight of a 1:1 copolymer of chlorotrifluoroethylene or tetrafluoroethylene and an ω-hydroxyalkyl vinyl ether, all based on the combined weight of polysilicic acid, calculated as silica, and/or hexa(alkoxyalkyl)melamine and copolymer, the improvement which comprises increasing resistance to ultraviolet light by incorporating in the composition, 0.5-35% by weight, based on the combined weight of polysilicic acid, calculated as silica, and/or hexa(alkoxyalkyl)melamine and copolymer, of an added compound of one of the formulas ##STR11## R is a divalent hydrocarbon or hydrocarbon ether radical of up to 10 carbons; R 1 is an aliphatic hydrocarbon radical of less than 5 carbon atoms, an acyl radical of less than 5 carbon atoms, or a radical of the formula (CH 2 CH 2 O) n Z in which n is an integer of 1 to 8 and Z is an aliphatic hydrocarbon radical of less than 5 carbon atoms; R 2 is a stable, monovalent or divalent hydroxyl-aromatic radical, containing up to 4 aromatic rings joined to oxygen through an aromatic carbon, of the type which absorbs light in the region of 2500-4000 A in an amount effective for stabilizing polymers against ultraviolet light; a is 0 or 1; and b is 1 or 2.
Claim 6
Dependent Claim
10 words
The coating composition of claim 3 in nonaqueous liquid solution.
Claim 7
Dependent Claim
19 words
The coating composition of claim 4 in which the added compound is the 1:1 adduct of 2,4-dihydroxybenzophenone and γ-glycidoxypropyltrimethoxysilane.
Claim 8
Dependent Claim
19 words
The coating composition of claim 4 in which the added compound is the 1:2 adduct of 2,2',4,4'-tetrahydroxybenzophenone and γ-glycidoxypropyltrimethoxysilane.
Claim 9
Dependent Claim
19 words
The coating composition of claim 4 in which the added compound is the 1:2 adduct of 2,2'4,4'-tetrahydroxybenzophenone and β-(3,4-epoxycyclohexyl)ethyltrimethyloxysilane.
Claim 10
Dependent Claim
13 words
The coating composition of claim 3 in the form of a solid complex.
Claim 11
Dependent Claim
19 words
The coating composition of claim 8 in which the added compound is the 1:1 adduct of 2,4-dihydroxybenzophenone and γ-glycidoxypropyltrimethoxysilane.
Claim 12
Dependent Claim
19 words
The coating composition of claim 8 in which the added compound is the 1:2 adduct of 2,2',4,4'-tetrahydroxybenzophenone and γ-glycidoxypropyltrimethoxysilane.
Claim 13
Dependent Claim
19 words
The coating composition of claim 8 in which the added compound is the 1:2 adduct of 2,2',4,4'-tetrahydroxybenzophenone and β-(3,4-epoxycyclohexyl)ethyltrimethyloxysilane.
Claim 14
Dependent Claim
14 words
A manufacture formed from a synthetic plastic carrying a coating composition of claim 8.
Claim 15
Dependent Claim
13 words
A manufacture of claim 12 in which the synthetic plastic is a polycarbonate.
Claim 16
Dependent Claim
14 words
A manufacture formed from a polycarbonate substrate carrying the coating composition of claim 9.
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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) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |