Claims
- 1. A polymerisable composition comprising, as essential ingredients, a polymerizable unsaturated compound containing at least least one C--C multiple bond and, as a photo-initiator, a 6-acyl-(6H)-dibenz-(c,e)(1,2)-oxaphosphorin-6-oxide of the formula
- wherein each of R.sup.1, R.sup.2 and R.sup.3 are present once or more than once, wherein R.sup.1 and R.sup.2 represent hydrogen or chlorine, R.sup.3 represents hydrogen, chlorine or alkyl or alkoxy each having from 1 to 6 carbon atoms and wherein Ar represents an aromatic hydrocarbon group having from 6 to 10 carbon atoms.
- 2. A composition as claimed in claim 1, containing as an essential ingredient a said compound, wherein Ar represents the benzene ring.
- 3. A composition as claimed in claim 1, wherein the said compound is present in an amount of 0.001 to 20% of the weight of the polymerizable composition.
- 4. A composition as claimed in claim 1, wherein the said compound is present in an amount in the range of from 0.01 to 15% by the weight of the polymerizable composition.
- 5. A composition as claimed in claim 1, wherein the said compound is present in an amount in the range of from 0.1 to 5% by the weight of the polymerizable composition.
- 6. A composition as claimed in claim 1, which is a coating composition capable of being hardened by irradiation, or a grout, trowelling compound or a sealing compound, containing the said compound in an amount of from 0.001 to 20%, referred to the weight of the polymerizable composition.
- 7. A composition as claimed in claim 6, wherein the said compound is contained in an amount in the range of from 0.01 to 10% by weight.
- 8. A composition as claimed in claim 6, which is a pigmented or unpigmented coating composition or a printing ink.
- 9. A composition as claimed in claim 1, which in addition contains at least one further photo-initiator.
- 10. A composition as claimed in claim 9, wherein the further photo-initiator is an aromatic ketone, a thioxanthone-derivative or a combination thereof and is applied in an amount such that the weight ratio of the said compound of formula 1 to the further photo-initiator is in the range of from 0.5:1 to 30:1, the total content of the photo-initiators being in the range of from 1 to 20%, referred to the weight of the total polymerizable composition.
- 11. A composition as claimed in claim 10, wherein the weight ratio is in the range of from 0.8:1 to 10:1.
- 12. A composition as claimed in claim 11, wherein the weight ratio is in the range of from 1:1 to 3:1.
- 13. A composition as claimed in claim 12, which in addition contains at least one secondary or tertiary amino compound.
Priority Claims (2)
Number |
Date |
Country |
Kind |
3728169 |
Aug 1987 |
DEX |
|
3817860 |
May 1988 |
DEX |
|
DESCRIPTION
This application is a division of copending application Ser. No. 07/235,004, filed on Aug. 22, 1988, now U.S. Pat. No. 5,008,426, issued Apr. 4, 1991.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4292152 |
Lechtken et al. |
Sep 1981 |
|
4447520 |
Henne et al. |
May 1984 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
235004 |
Aug 1988 |
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