Patent US4115224A successfully refreshed from Google Patents.
US4115224A
Expired / Lapsed
US
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Radiation acid curable resin compositions and process for curing them
Assignee: Akzo NV
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Filing: 1974-07-05
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Granted: 1978-09-19
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Expires: 1994-07-05
Abstract
Abstract A process for curing acid-curable resins with photocatalyst compounds having the general formula: <IMAGE> WHEREIN M = 0, 1 OR 2 AND P IS AN INTEGER FROM 1 TO 5 AND WHEREIN, WHEN P IS 1, R represents an alkyl or alkoxy group having at least 4 C-atoms, and when p>1, R represents alkyl or alkoxy groups having together at least 4 C-atoms. The photocatalyst which may be used is 2,2,2-trichloro-4'-tert-butylacetacetophenone. This compound may be prepared by chlorinating 4'-tert-butylacetophenone or by treating tert-butyl benzene in carbon disulfide with trichloroacetyl chloride or trichloroacetonitrile and aluminum chloride.
Inventors
- 👤 Reginoldus Havinga
- 👤 Pieter Dirk Swaters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:52
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/20; C08K; C08K5/00; C08K5/04; C08K5/07; C09; C09D; C09D167/00; C09D167/08; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/124
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
In a process for curing an acid-curable resin containing a phenol, urea or melamine resin by irradiation with ultraviolet light, the improvement comprising incorporating therein a photocatalyst having the formula ##STR3## wherein m = 0, 1 or 2 and p is an integer from 1 to 5 and wherein, when p is 1, R represents an alkyl or alkoxy group having at least 4 C-atoms, and when p> 1, R represents alkyl or alkoxy groups having together at least 4 C-atoms.
Claim 2
Dependent Claim
81 words
In a process for curing an acid-curable resin containing a phenol, urea or melamine resin by irradiation with ultraviolet light, the improvement comprising incorporating therein a photocatalyst having the formula ##STR3## wherein m = 0, 1 or 2 and p is an integer from 1 to 5 and wherein, when p is 1, R represents an alkyl or alkoxy group having at least 4 C-atoms, and when p> 1, R represents alkyl or alkoxy groups having together at least 4 C-atoms.
Claim 3
Dependent Claim
28 words
The process as claimed in claim 1, wherein the photocatalyst is used in an amount of 0.5 - 10% by weight, calculated on the resin to be cured.
Claim 4
Dependent Claim
19 words
The process as claimed in claim 2, wherein the amount of photocatalyst used is 1 - 5% by weight.
Claim 5
Dependent Claim
12 words
The process as claimed in claim 1, wherein the photocatalyst is 2,2,2-trichloro-4'-tert.butylacetophenone.
Claim 6
Dependent Claim
98 words
Acid-curable resin compositions consisting essentially of 10-100% by weight of a melamine resin or a urea-resin, 0-90% by weight of an alkyd resin, and a compound having the formula: ##STR4## wherein m = 0, 1 or 2 and p is an integer from 1 to 5 and wherein when p is 1, R represents an alkyl or alkoxy group having at least 4 C-atoms, and when p>1, R represents alkyl or alkoxy groups having together at least 4 C-atoms as a photocatalyst in an amount of 0.5 to 10% by weight based upon the resin to be cured.
Claim 7
Dependent Claim
98 words
Acid-curable resin compositions consisting essentially of 10-100% by weight of a melamine resin or a urea-resin, 0-90% by weight of an alkyd resin, and a compound having the formula: ##STR4## wherein m = 0, 1 or 2 and p is an integer from 1 to 5 and wherein when p is 1, R represents an alkyl or alkoxy group having at least 4 C-atoms, and when p>1, R represents alkyl or alkoxy groups having together at least 4 C-atoms as a photocatalyst in an amount of 0.5 to 10% by weight based upon the resin to be cured.
Claim 8
Dependent Claim
26 words
A composition as claimed in claim 5, wherein the photocatalyst is used in an amount of 1-5% by weight, calculated on the resin to be cured.
Claim 9
Dependent Claim
13 words
A composition as claimed in claim 5, werein the photocatalyst is 2.2.2-trichloro-4'-tertiary butylacetophenone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |