US 2019/0271885 Al  49  Sep.5,2019  TABLE 3-2  [04211  As seen from Table 3 and Table 3-2, it was con› firmed that the wet heat resistance was excellent with the  optical film of the embodiment of the present invention.  [0422]  Above all, it was confirmed that in a case where  (A)-(B) is 21.0 or more, the effects are more excellent.  [0423]  Furthermore, it was confirmed that even in a case  where HB(C$_{6}$F  5 ) 4  was used instead of the additive B-1 of  Example 1, the same extent of effects as in Example 1  occurs.  [0424]  In addition, even in a case where the amount of the  additive to be used was adjusted to 2.01 % by mole with  respect to the liquid crystal compound in each of Examples  2 and 18, the same good results as that with 0.67% by mole  was obtained.  EXPLANATION OF REFERENCES  a retardation layer which is disposed on the alignment  layer and formed using a polymerizable liquid crystal  composition including a liquid crystal compound rep› resented by Formula (I),  A 1  andA 2  each independently represent a single bond, an  aromatic ring having 6 or more carbon atoms, or a  cycloalkylene ring having 6 or more carbon atoms,  G 1  and G 2  each independently represent a divalent alicy› clic hydrocarbon group having 5 to 8 carbon atoms  which may have a substituent, and one or more of  ---CH 2 -’s constituting the alicyclic hydrocarbon group  may be substituted with ---0-, -S-, or -NH-,  R1, R 2 , R 3 , and R 4  each independently represent a hydro› gen atom, a fluorine atom, or an alkyl group having 1  to  4  carbon atoms,  in Formula (I), D 1 , D 2 , D 3 , and D 4  each independently  represent a single bond, ---0-CO-, ---C(=S)O-,  ---CR1R2- -CR1R2---CR3R4- -O---CR1R2- ---CR  1  R  2  -O---CR 3 R 4 -,  ----C0-0---CR  1  R  2  -:  ---0-CO---CR  1  R 2  -,  -CR  1  R 2  ---O-CO- CR3R4-, -CR 1 R 2 ---CO-O---CR 3 R 4 -, -NR 1 - CR  2 R 3  -,  or ---CO-NR  1  -, provided that at least one  of D 1 , D 2 , D 3 , or D 4  represents -O---CO-,  wherein at least one of an acid having the pKa of -10.0  or less or a salt of the acid is included in at least one of  the alignment layer or the retardation layer,  [0425]  lOA, 10B  optical film  [0426]  12  alignment layer  [0427]  14  retardation layer  [0428]  16  support  What is claimed is:  1.  An optical film comprising:  an alignment layer; and  L $^{1}$-sP$^{1}$-A $^{1}$-D$^{3}$-G-D-Ar-D$^{2}$-G2-D$^{4}$-A$^{2}$-SP$^{2}$-L  2  Formula (I)  Retardation layer  ______  A_li"’gnrn  __  en_t_la~y_e_r _____  Type of liquid crystal  pKa (A) of Additive  Narue  Type of polymer  compound  core  Type  Exaruple 21  Alignment film D-1  PVA(D-1)  Compound A-2  8.47  Additive B-1  Exaruple 22  Photoalignment film C-2 Polymer C-2  Compound A-2  8.47  Additive B-1  Exaruple 23  Alignment film D-1  PVA(D-1)  Compound A-2  8.47  Additive B-3  Exaruple 24  Photoalignment film C-2 Polymer C-2  Compound A-2  8.47  Additive B-3  Exaruple 25  Alignment film D-1  PVA(D-1)  Compound A-3  8.82  Additive B-1  Exaruple 26  Photoalignment film C-2 Polymer C-2  Compound A-3  8.82  Additive B-1  Exaruple 27  Alignment film D-1  PVA(D-1)  Compound A-3  8.82  Additive B-4  Exaruple 28  Photoalignment film C-2 Polymer C-2  Compound A-3  8.82  Additive B-4  Exaruple 29  Alignment film D-1  PVA(D-1)  Compound A-4  9.56  Additive B-1  Exaruple 30  Photoalignment film C-2 Polymer C-2  Compound A-4  9.56  Additive B-1  Exaruple 31  Alignment film D-1  PVA(D-1)  Compound A-4  9.56  Additive B-5  Comparative  Photoalignment film C-1  Polymer C-1  Compound A-2  8.47  Additive B-6  Exaruple 1  Comparative  Photoalignment film C-1  Polymer C-1  Compound A-3  8.82  Additive B-6  Exaruple 2  Comparative  Photoalignment film C-1  Polymer C-1  Compound A-4  9.56  Additive B-6  Exaruple 3  Additive  pKa (B) of  conjugate acid of  Addition aruount vs. Relational  liquid crystal  formula  Wet heat  additive  Additive layer  mol (%)  (A) - (B)  resistance  Exaruple 21  Exaruple 22  Exaruple 23  Exaruple 24  Exaruple 25  Exaruple 26  Exaruple 27  Exaruple 28  Exaruple 29  Exaruple 30  Exaruple 31  Comparative  Exaruple 1  Comparative  Exaruple 2  Comparative  Exaruple 3  -13.5  -13.5  -11.6  -11.6  -13.5  -13.5  -14.9  -14.9  -13.5  -13.5  -13.5  -3.6  -3.6  -3.6  Liquid crystal layer  Photoalignment film layer  Liquid crystal layer  Photoalignment film layer  Liquid crystal layer  Photoalignment film layer  Liquid crystal layer  Photoalignment film layer  Liquid crystal layer  Photoalignment film layer  Liquid crystal layer  Photoalignment film layer  Photoalignment film layer  Photoalignment film layer  2.01  0.67  2.01  0.67  2.01  0.67  2.01  0.67  2.01  0.67  2.01  0.67  0.67  0.67  21.97  A  21.97  A  20.02  B  20.02  B  22.32  A  22.32  A  23.72  A  23.72  A  23.06  A  23.06  A  23.06  A  12.07  C  12.42  C  13.16  C 