Photographic diffusion transfer films, processes and compositions with color moiety releasing compound

Claim 2

A photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, each said silver halide emulsion layer having associated therewith a nondiffusible p-sulfonamidoaniline or p-sulfoamidophenol having a color-providing moiety attached through the sulfonamido group.

Claim 3

A photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, each said silver halide emulsion layer having associated therewith a nondiffusible sulfonamido compound which is alkalicleavable upon oxidation to release a diffusible color-providing moiety from the benzene nucleus, said compound having the formula: ##SPC15## wherein: 1. Col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition; 3. G is OR or NHR 1 wherein R is hydrogen or a hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is hydrogen or an alkyl group of less than eight carbon atoms.

Claim 4

A photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, each said silver halide emulsion layer having associated therewith a nondiffusible sulfonamido compound which is alkalicleavable upon oxidation to release a diffusible color-providing moiety from the benzene nucleus, said compound having the formula: ##SPC15## wherein: 1. Col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition; 3. G is OR or NHR 1 wherein R is hydrogen or a hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is hydrogen or an alkyl group of less than eight carbon atoms.

Claim 5

The photosensitive element of claim 2 wherein G is OH or NH 2 .

Claim 6

The photosensitive element of claim 2 wherein said sulfonamido compound is a sulfonamidonaphthol.

Claim 7

The photosensitive element of claim 1 wherein said sulfonamido compound is: 8-acetamido-3,6-disulfo-2-{p-[(4-hydroxy-2-pentadecyl)-benzenesulfonamido]phenylazo}naphthol monopyridinium salt; 2-{p-[(4-hydroxy-2-pentadecyl)-benzenesulfonamido]-phenylazo}-4-isopropoxynaphthol; 4-{p-[4'-(N,N-dimethylamino)-phenylazo]-benzenesulfonamido}-3-pentadecylphenol; 1-hydroxy-4-[4-(1-hydroxy-4-isopropoxy-2-napthylazo)-benzenesulfonamido]-2-[Δ-(2,4-di-tert-amylphenoxy)-n-butyl]naphthamide; 1-hydroxy-4-[3-(1-phenyl-3-methylcarbamyl-4-pyrazolin-5-onylazo)-benzenesulfonamido]-2-[Δ-2,4-di-tert-amylphenoxy)-n-butyl]-napthamide; 4-[p-(4'-dimethylaminophenylazo)-benzenesulfonamido]-N-n-dodecylaniline or 1-hydroxy-4-[3-(N-[4-(3,5-dibromo-4-hydroxyphenylimino)-l-phenyl-2-pyrazolin-5-on-3-yl]carbamyl)-benzenesulfonamido]-2-[Δ-(2,4-di-tert-amylphenoxy)-n-butyl]napthamide.

Claim 8

A photosensitive element comprising a support having thereon a red-sensitive silver halide emulsion layer having associated therewith a cyan dye image-providing material, a green-sensitive silver halide emulsion layer having associated therewith a magenta dye image-providing material, and a blue-sensitive silver halide emulsion layer having associated therewith a yellow dye image-providing material, at least one of said dye image-providing materials being nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release diffusible color-providing moiety from the benzene nucleus.

Claim 9

A photosensitive element comprising a support having thereon a red-sensitive silver halide emulsion layer having associated therewith a cyan dye image-providing material, a green-sensitive silver halide emulsion layer having associated therewith a magenta dye image-providing material, and a blue-sensitive silver halide emulsion layer having associated therewith a yellow dye image-providing material, at least one of said dye image-providing materials being nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release diffusible color-providing moiety from the benzene nucleus.

Claim 10

The photosensitive element of claim 6 wherein said sulfonamido compound has the formula: ##SPC16## wherein:

Claim 11

Col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition; 3. G. is OR or NHR 1 wherein R is hydrogen or a hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is hydrogen or an alkyl group of less than eight carbon atoms.

Claim 12

Col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition; 3. G. is OR or NHR 1 wherein R is hydrogen or a hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is hydrogen or an alkyl group of less than eight carbon atoms.

Claim 13

The photosensitive element of claim 7 wherein each said silver halide emulsion is a direct positive silver halide emulsion.

Claim 14

A photographic film unit comprising: a. a photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, each said silver halide emulsion layer having associated therewith a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus; b. a dye image-receiving layer; and c. means for discharging an alkaline processing composition within said film unit; said film unit containing a silver halide developing agent.

Claim 15

A photographic film unit comprising: a. a photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, each said silver halide emulsion layer having associated therewith a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus; b. a dye image-receiving layer; and c. means for discharging an alkaline processing composition within said film unit; said film unit containing a silver halide developing agent.

Claim 16

The film unit of claim 9 wherein said sulfonamido compound has the formula: ##SPC17## wherein: 1. Col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition; 3. G is OR or NHR 1 wherein R is hydrogen or hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is hydrogen or an alkyl group of less than eight carbon atoms.

Claim 17

The film unit of claim 10 wherein G is OH or NH 2 .

Claim 18

The film unit of claim 10 wherein said sulfonamido compound is a sulfonamidonaphthol.

Claim 19

The film unit of claim 9 wherein said sulfonamido compound is: 8-acetamido-3,6-disulfo-2-{p-[(4-hydroxy-2-pentadecyl)-benzenesulfonamido[phenylazo}naphthol monopyridinium salt; 2-{p-[(4-hydroxy-2-pentadecyl)-benzenesulfonamido[-phenylazo}-4-is opropoxynaphthol; 4-{p-[4'-(N,N-dimethylamino)-phenylazo]benzenesulfonamido}-3-pentadecylphenol; 1-hydroxy-4-[4-(1-hydroxy-4-isopropoxy-2-naphthylazol-benzenesulfonamido]-2-[Δ-(2,4-di-tert-amylphenoxy)-n-butyl]naphthamide; 1-hydroxy-4-[3-(1-phenyl-3-methylcarbamyl-4-pyrazolin-5-onylazol-benzenesulfonamido]-2-[Δ-(2,4-di-tert-amylphenoxy)-n-butyl[, naphthamide; 4-[p-(4'-dimethylaminophenylazo)-benzenesulfonamido[-N-n-dodecylaniline or 1-hydroxy-4-[3-(N-[4-(3,5-dibromo-4-hydroxyphenylimino)-1-phenyl-2-pyrazolin-5-on-3-yl]carbamyl)-benzenesulfonamido]-2-[Δ-(2,4-di-tert-amylphenoxy)-n-butyl]naphthamide.

Claim 20

The film unit of claim 9 wherein said dye image-receiving layer is located in said photosensitive element between said support and the lowermost photosensitive silver halide emulsion layer.

Claim 21

The film unit of claim 9 wherein said dye image-receiving layer is coated on a separate support and is adapted to be superposed on said photosensitive element after exposure thereof.

Claim 22

The film unit of claim 15 wherein said discharging means is a rupturable container and is so positioned during processing of said film unit that a compressive force applied to said container by pressure-applying members will effect a discharge of the container's contents between said dye image-receiving layer and the layer most remote from the support of said photosensitive element.

Claim 23

A photographic film unit comprising: a. a photosensitive element comprising a support having thereon a red-sensitive silver halide emulsion layer having associated therewith a cyan dye image-providing material, a green-sensitive silver halde emulsion layer having associated therewith a magenta dye image-providing material, and a blue-sensitive silver halide emulsion layer having associated therewith a yellow dye image-providing material; b. a dye image-receiving layer; and c. a rupturable container containing an alkaline processing composition, said rupturable container being adapted to be positioned during processing of said film unit so that a compressive force applied to said container by pressure-applying members will effect a discharge of the container's contents within said film unit; said film unit containing a silver halide developing agent; at least one of said dye image-providing materials being a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus.

Claim 24

A photographic film unit comprising: a. a photosensitive element comprising a support having thereon a red-sensitive silver halide emulsion layer having associated therewith a cyan dye image-providing material, a green-sensitive silver halde emulsion layer having associated therewith a magenta dye image-providing material, and a blue-sensitive silver halide emulsion layer having associated therewith a yellow dye image-providing material; b. a dye image-receiving layer; and c. a rupturable container containing an alkaline processing composition, said rupturable container being adapted to be positioned during processing of said film unit so that a compressive force applied to said container by pressure-applying members will effect a discharge of the container's contents within said film unit; said film unit containing a silver halide developing agent; at least one of said dye image-providing materials being a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus.

Claim 25

The film unit of claim 17 wherein said sulfonamido compound has the formula: ##SPC18## wherein: 1. Col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition; 3. G is OR or NHR 1 wherein R is hydrogen or a hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is hydrogen or an alkyl group of less than eight carbon atoms.

Claim 26

The film unit of claim 18 wherein each said silver halide emulsion is a direct positive silver halide emulsion.

Claim 27

The film unit of claim 18 wherein each said sulfonamido compound is employed in combination with physical development nuclei in a layer contiguous to each said silver halide emulsion layer, said rupturable container also containing a silver halide solvent.

Claim 28

A process for producing a photographic transfer image in color, comprising: A. imagewise exposing a photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, said silver halide emulsion layer having associated therewith a dye image-providing material comprising a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus; B. treating said photosensitive element with an alkaline processing composition in the presence of a silver halide developing agent to effect development of each of said exposed silver halide emulsion layers, thereby oxidizing said developing agent; C. said oxidized developing agent thereby cross-oxidizing said sulfonamido compound; D. said oxidized sulfonamido compound then cleaving, thus forming an imagewise distribution of diffusible dye or dye precursor as a function of said imagewise exposure of each of said silver halide emulsion layers; and E. at least a portion of said imagewise distributions of diffusible dye or dye precursor diffusing to a dye image-receiving layer to provide an image.

Claim 29

A process for producing a photographic transfer image in color, comprising: A. imagewise exposing a photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, said silver halide emulsion layer having associated therewith a dye image-providing material comprising a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus; B. treating said photosensitive element with an alkaline processing composition in the presence of a silver halide developing agent to effect development of each of said exposed silver halide emulsion layers, thereby oxidizing said developing agent; C. said oxidized developing agent thereby cross-oxidizing said sulfonamido compound; D. said oxidized sulfonamido compound then cleaving, thus forming an imagewise distribution of diffusible dye or dye precursor as a function of said imagewise exposure of each of said silver halide emulsion layers; and E. at least a portion of said imagewise distributions of diffusible dye or dye precursor diffusing to a dye image-receiving layer to provide an image.

Claim 30

The process of claim 21 wherein said treatment step B) is effected by: A. superposing over the layer outermost from the support of said photosensitive element said dye image-receiving layer coated on a support; B. positioning a rupturable container containing an alkaline processing composition between said exposed photosensitive element and said dye image-receiving layer, said alkaline processing composition containing said developing agent; and C. rupturing said container to effect a discharge of the container's contents between said outermost layer of said exposed photosensitive element and said dye image-receiving layer.

Claim 31

The process of claim 21 wherein said sulfonamido compound has the formula: ##SPC19## wherein: 1. Col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition; 3. G is OR or NHR 1 wherein R is hydrogen or a hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is hydrogen or an alkyl group of less than eight carbon atoms.

Claim 32

The process of claim 23 wherein G is OH or NH 2 .

Claim 33

The process of claim 23 wherein said sulfonamido compound is a sulfonamidonaphthol.

Claim 34

The process of claim 21 wherein said sulfonamido compound is: 8-acetamido-3,6-disulfo-2-{p-[(4-hydroxy-2-pentadecyl)-benzenesulfonamido]phenylazo}naphthol monopyridinium salt; 2-{p-[(4-hydroxy-2-pentadecyl)benzenesulfonamido]-phenylazo}-4-isopropoxynaphthol; 4-{p-[4'-(N,N-dimethylamino)phenylazo]benzenesulfonamido}-3-pentadecylphenol; 1-hydroxy-4-[4-(1-hydroxy-4-isopropoxy-2-naphthylazo)-benzenesulfonamido]-2-[Δ-(2,4-di-tert-amylphenoxy)-n-butyl]naphthamide; 1-hydroxy-4-[3-(1-phenyl-3-methylcarbamyl-4-pyrazolin-5-onylazo)-benzenesulfonamido]-2-[Δ-(2,4-di-tert-amylphenoxy)-n-butyl]naphthamide; 4-]p-(4'-dimethylaminophenylazo)-benzenesulfonamido]-N-n-dodecylaniline or 1-hydroxy-4-[3-(N-[4-(3,5-dibromo-4-hydroxyphenylimino)-1-phenyl-2-pyrazolin-5-on-3-yl]carbamyl)-benzenesulfonamido]-2-[Δ-(2,4-di-tert-amylphenoxy)-n-butyl]naphthamide.

Claim 35

A process for producing a photographic transfer image in color comprising: A. imagewise-exposing a photosensitive element comprising a support having thereon a red-sensitive silver halide emulsion layer having associated therewith a cyan dye image-providing material, a green-sensitive silver halide emulsion layer having associated therewith a magenta dye image-providing material, and a blue-sensitive silver halide emulsion layer having associated therewith a yellow dye image-providing material, at least one of said dye image-providing materials being a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus; B. superposing over the layer outermost from the suuport of said photosensitive element a dye image-receiving layer coated on a support; C. positioning a rupturable container containing an alkaline processing composition comprising a silver halide developing agent between said exposed photosensitive element and said dye image-receiving layer; D. rupturing said container to effect a discharge of the container's contents between said outermost layer of said exposed photosensitive element and said dye image-receiving layer; E. thereby effecting development of each of said exposed silver halide emulsion layers, thereby oxidizing said silver halide developing agent; F. said oxidized developing agent cross-oxidizing said sulfonamido compound; G. said sulfonamido compound then cleaving, thus forming an imagewise distribution of diffusible dye or dye precursor as a function of said imagewise exposure of each of said silver halide emulsion layers; H. at least a portion of said imagewise distributions of diffusible dye or dye precursor diffusing to said dye image-receiving layer to provide an image; and I. separating said photosensitive element from said dye image-receiving layer coated on its said support.

Claim 36

A process for producing a photographic transfer image in color comprising: A. imagewise-exposing a photosensitive element comprising a support having thereon a red-sensitive silver halide emulsion layer having associated therewith a cyan dye image-providing material, a green-sensitive silver halide emulsion layer having associated therewith a magenta dye image-providing material, and a blue-sensitive silver halide emulsion layer having associated therewith a yellow dye image-providing material, at least one of said dye image-providing materials being a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus; B. superposing over the layer outermost from the suuport of said photosensitive element a dye image-receiving layer coated on a support; C. positioning a rupturable container containing an alkaline processing composition comprising a silver halide developing agent between said exposed photosensitive element and said dye image-receiving layer; D. rupturing said container to effect a discharge of the container's contents between said outermost layer of said exposed photosensitive element and said dye image-receiving layer; E. thereby effecting development of each of said exposed silver halide emulsion layers, thereby oxidizing said silver halide developing agent; F. said oxidized developing agent cross-oxidizing said sulfonamido compound; G. said sulfonamido compound then cleaving, thus forming an imagewise distribution of diffusible dye or dye precursor as a function of said imagewise exposure of each of said silver halide emulsion layers; H. at least a portion of said imagewise distributions of diffusible dye or dye precursor diffusing to said dye image-receiving layer to provide an image; and I. separating said photosensitive element from said dye image-receiving layer coated on its said support.

Claim 37

The process of claim 27 wherein said sulfonamido compound has the formula: ##SPC20## wherein: 1. col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuratin as to render said compound nondiffusible during development in an alkaline processing composition; 3. G is OR or NHR 1 where R is hydrogen or a hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is hydrogen or an alkyl group of less than eight carbon atoms.

Claim 38

A process for producing a photographic transfer image in color comprising: A. imagewise-exposing a photographic element comprising a transparent support having thereon: a. a dye image-receiving layer; b. an alkaline solution-permeable, substantially opaque, light-reflective layer; c. a red-sensitive silver halide emulsion layer having associated therewith a cyan dye image-providing material; d. a green-sensitive silver halide emulsion layer having associated therewith a magenta dye image-providing material; and e. a blue-sensitive silver halide emulsion layer having associated therewith a yellow dye image-providing material; at least one of said dye image-providing materials being a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus; B. each said exposed siler halide emulsion layer with a silver halide developing agent thereby causing said developing agent to become oxidized; C. said oxidized developing agent thereby cross-oxidizing said sulfonamido compound; D. said sulfonamido compound then cleaving, thus forming an imagewise distribution of diffusible dye or dye precursor as a function of said imagewise exposure of each of said silver halide emulsion layers; and E. at least a portion of said imagewise distributions of diffusible dye or dye precursor diffusing to said dye image-receiving layer to provide an image viewable through said transparent support.

Claim 39

A process for producing a photographic transfer image in color comprising: A. imagewise-exposing a photographic element comprising a transparent support having thereon: a. a dye image-receiving layer; b. an alkaline solution-permeable, substantially opaque, light-reflective layer; c. a red-sensitive silver halide emulsion layer having associated therewith a cyan dye image-providing material; d. a green-sensitive silver halide emulsion layer having associated therewith a magenta dye image-providing material; and e. a blue-sensitive silver halide emulsion layer having associated therewith a yellow dye image-providing material; at least one of said dye image-providing materials being a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group, said sulfonamido compound being alkali-cleavable upon oxidation to release said diffusible color-providing moiety from the benzene nucleus; B. each said exposed siler halide emulsion layer with a silver halide developing agent thereby causing said developing agent to become oxidized; C. said oxidized developing agent thereby cross-oxidizing said sulfonamido compound; D. said sulfonamido compound then cleaving, thus forming an imagewise distribution of diffusible dye or dye precursor as a function of said imagewise exposure of each of said silver halide emulsion layers; and E. at least a portion of said imagewise distributions of diffusible dye or dye precursor diffusing to said dye image-receiving layer to provide an image viewable through said transparent support.

Claim 40

The process of claim 29 wherein said sulfonamido compound has the formula: ##SPC21## wherein: 1. Col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition; 3. G is OR or NHR 1 wherein R is hydrogen or a hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is hydrogen or an alkyl group of less than eight carbon atoms.

Claim 41

The process of claim 30 wherein each said silver halide emulsion is a direct positive silver halide emulsion which provides a positive transfer image.

Claim 42

A photographic silver halide composition comprising a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group.

Claim 43

A photographic silver halide composition comprising a nondiffusible p-sulfonamidoaniline or p-sulfonamidophenol having a color-providing moiety attached through the sulfonamido group.

Claim 44

The composition of claim 32 wherein said sulfonamido compound is alkali-cleavable upon oxidation to release a diffusible color-providing moiety from the benzene nucleus, said compound having the formula: ##SPC22## wherein: 1. Col is a dye or dye precursor moiety; 2. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition; 3. G is OR or NHR 1 wherein R is hydrogen or a hydrolyzable moiety and R 1 is hydrogen or an alkyl group of one to 22 carbon atoms; and 4. n is a positive integer of 1 to 2 and is 2 when G is OR or when R 1 is a hydrogen or an alkyl group of less than eight carbon atoms.