Recording and information record elements comprising telluropyrlium dyes

Claim 2

A recording element comprising a support having coated thereon an optical recording layer of an amorphous composition comprising an infrared absorbing telluropyrylium dye and a binder; wherein the dye is present in the layer in an amount of at least 50% by weight of the dye and binder.

Claim 3

The element of claim 1 wherein the layer absorbs in the 700-900 nm region of the spectrum and the dye has the structure ##STR29## wherein R 1 , R 3 and R 5 each independently represents alkyl, aryl, (CR 6 ═CH) n CR 7 ═A 1 or (CH═CH) m A 2 provided that one, and only one, of R 1 , R 3 and R 5 is (CR 6 ═CH) n CR 7 ═A 1 or (CH═CH) m A 2 ; wherein R 2 and R 4 each independently represents hydrogen; or R 2 and R 3 , or R 4 and R 5 , taken together with the carbon atoms to which they are attached, form a mononuclear or polynuclear fused carbocyclic ring having from about 5 to 20 carbon atoms; R 6 and R 7 are each independently hydrogen, cyano, alkyl or aryl; A 1 represents a monocyclic or polycyclic heterocyclylidene group; A 2 represents aryl, amino, dialkylaminoaryl, alkylamino, arylamino, dialkylamino, diarylamino or a monocyclic or polycyclic heterocyclyl group; n represents a number from 0 to 5; m represents a number from 1 to 5; and X represents an anion.

Claim 4

The element of claim 2 wherein the dye has the structure ##STR30## wherein R 10 and R 8 each independently represents alkyl, aryl, (CR 6 ═CH) n CR 7 ═A 1 or (CH═CH) m A 2 provided that one, and only one, of R 10 and R 8 is (CR 6 ═CH) n CR 7 ═A 1 or (CH═CH) m A 2 ; A 1 represents a monocyclic or polycyclic heterocyclyidene group; A 2 represents aryl, amino, dialkylaminoaryl, alkylamino, arylamino, dialkylamino, diarylamino or a monocyclic or polycyclic heterocyclyl group; R 6 and R 7 are each independently hydrogen, cyano, alkyl or aryl; R 9 , R 11 , R 12 , R 13 and R 14 each independently represents hydrogen; n represents a number from 0 to 5; m represents a number from 1 to 5; and X represents an anion.

Claim 5

The element of claim 2 wherein R 1 , R 3 and R 5 each independently represents methyl, ethyl, t-butyl, phenyl, p-N,N-dimethylaminophenyl, p-anisyl and (CR 6 ═CH) n CR 7 --A 1 , (CH═CH) m A 2 ; A 1 represents a nucleus selected from the group consisting of oxazolylidene, thiazolylidene, selenazolylidene, imidazolylidene, pyranylidene, thiapyranylidene, selenapyranylidene, telluropyranylidene, oxoindolazinylidene, benzoxazolylidene, benzothiazolylidene, benzopyranylidene, benzothiapyranylidene, benzoselenapyranylidene, or benzotelluropyranylidene; A 2 represents phenyl, dimethylaminophenyl, dimethylamino or a nucleus selected from the group consisting of oxazolyl, 9-julolidyl, thiazolyl, selenazolyl, tetrahydroquinolinyl, imidazolyl, benzoxazolyl, benzothiazolyl or naphthyl; and X represents BF 4 - , ClO 4 - , CF 3 SO 3 - , FSO 3 - , PF 6 - , CH 3 SO 3 - , Cl - , Br - , or I - .

Claim 6

The element of claim 3 wherein R 8 and R 10 each independently represents methyl, ethyl, t-butyl, phenyl, p-anisyl, 2,5-dimethoxyphenyl, p-N,N-dimethylaminophenyl and (CR 6 ═CH) n CR 7 ═A 1 or (CH═CH) m A 2 ; A 1 represents a nucleus selected from the group consisting of oxazolylidene, thiazolylidene, selenazolylidene, imidazolylidene, pyranylidene, thiapyranylidene, selenapyranylidene, telluropyranylidene, oxoindolazinylidene, benzoxazolylidene, benzothiazolylidene, benzopyranylidene, benzothiapyranylidene, benzoselenapyranylidene, or benzotelluropyranylidene; A 2 represents phenyl, dimethylaminophenyl, dimethylamino or a nuclus selected from the group consisting of oxazolyl, 9-julolidyl, thiazolyl, selenazolyl, tetrahydroquinolinyl, imidazolyl, benzoxazolyl, benzothiazolyl or naphthyl; and X represents BF 4 - , ClO 4 - , CF 3 SO 3 - , FSO 3 - , PF 6 - , CH 3 SO 3 - , Cl - , Br - , or I - .

Claim 7

The element of claim 1 wherein the dye is selected from the group consisting of ##STR31##

Claim 8

The element of claim 1 wherein the optical recording layer has an absorption factor of at least 20.

Claim 9

The recording element of claim 1 wherein the support is reflecting.

Claim 10

The recording element of claim 1 wherein the binder is selected from the group consisting of __________________________________________________________________________ Mole % __________________________________________________________________________ ##STR32## 35% 30% ; 35% ##STR33## 40% 30% ; 30% ##STR34## 16.67% 50% 16.67% ; 16.67% and ##STR35## 35% 30% . 35% ##STR36## __________________________________________________________________________