4.10.22 Halogenated Polyesters
Halogenated resins consist of chlorinated or brominated polyesters. The
chlorinated polyester resins cured at room temperature area lso known as
chlorendic polyesters. These resins have the highestheat resistance of any of
the polyesters. They arealso inherently fire retardant. Acombustible rating
of 20 can be achieved, making this the safest possible polyester for stacks,
hoods, or wherever afi re hazard exists.
Refer to Table 4.26 for the performance of chlorinated polyesters at
elevatedt emperatures. This permits them to survive high-temperature
upsets in flue gas desulfurization scrubbers, some of which can reach a
temperature of 4008 F(2048 C).
The halogenated polyesters exhibite xcellent resistance in contact with
oxidizing acids and solutions such as 35% nitric acid at room temperature,
40% chromic acid,c hlorine water,w et chlorine, and 15% hypochlorites.
Theya lso resist neutral and acids alts, nonoxidizing acids,o rganic acids,
mercaptans, ketones, aldehydes, alcohols, organic esters, and fats and oils.
These polyesters aren ot resistantt oh ighly alkaline solutions of sodium
hydroxide, concentrated sulfuric acid, alkaline solutions with ap Hg reater
than 10, aliphatic, primary,and aromatic amines, amides and other alkaline
TABLE 4.24 Continued
Maximum Te mperature
Chemical
8 F
8 C
Stannic chloride
200
93
Stannouschloride
220
104
Sulfuric acid, 10%
220
104
Sulfuric acid, 50%
220
104
Sulfuric acid, 70%
160
71
Sulfuric acid, 90%
XX
Sulfuric acid, 98%
XX
Sulfuric acid, 100%
XX
Sulfuric acid, fuming
XX
Sulfurous acid
1104 3
Thionyl chloride
XX
Toluene
XX
Trichloroacetic acid, 50%
180
82
White liquor
180
82
Zinc chloride
250
121
The chemicals listed are in the pures tate or in as aturated solution
unless otherwise indicated. Compatibility is shown to the maximum
allowable temperaturefor which data is available. Incompatibility is
shown by an X. Ablank space indicates that the data is unavailable.
Source:F rom P. A. Schweitzer.2 004. CorrosionR esistanceT ables,
Vo ls. 1–4, 5th ed., New York: Marcel Dekker.
Corrosion of Linings and Coatings
164
CAT8247—CHAPTER 4—17/10/2006—14:36—SRIDHAR—XML MODEL B–pp. 69–174
Halogenated resins consist of chlorinated or brominated polyesters. The
chlorinated polyester resins cured at room temperature area lso known as
chlorendic polyesters. These resins have the highestheat resistance of any of
the polyesters. They arealso inherently fire retardant. Acombustible rating
of 20 can be achieved, making this the safest possible polyester for stacks,
hoods, or wherever afi re hazard exists.
Refer to Table 4.26 for the performance of chlorinated polyesters at
elevatedt emperatures. This permits them to survive high-temperature
upsets in flue gas desulfurization scrubbers, some of which can reach a
temperature of 4008 F(2048 C).
The halogenated polyesters exhibite xcellent resistance in contact with
oxidizing acids and solutions such as 35% nitric acid at room temperature,
40% chromic acid,c hlorine water,w et chlorine, and 15% hypochlorites.
Theya lso resist neutral and acids alts, nonoxidizing acids,o rganic acids,
mercaptans, ketones, aldehydes, alcohols, organic esters, and fats and oils.
These polyesters aren ot resistantt oh ighly alkaline solutions of sodium
hydroxide, concentrated sulfuric acid, alkaline solutions with ap Hg reater
than 10, aliphatic, primary,and aromatic amines, amides and other alkaline
TABLE 4.24 Continued
Maximum Te mperature
Chemical
8 F
8 C
Stannic chloride
200
93
Stannouschloride
220
104
Sulfuric acid, 10%
220
104
Sulfuric acid, 50%
220
104
Sulfuric acid, 70%
160
71
Sulfuric acid, 90%
XX
Sulfuric acid, 98%
XX
Sulfuric acid, 100%
XX
Sulfuric acid, fuming
XX
Sulfurous acid
1104 3
Thionyl chloride
XX
Toluene
XX
Trichloroacetic acid, 50%
180
82
White liquor
180
82
Zinc chloride
250
121
The chemicals listed are in the pures tate or in as aturated solution
unless otherwise indicated. Compatibility is shown to the maximum
allowable temperaturefor which data is available. Incompatibility is
shown by an X. Ablank space indicates that the data is unavailable.
Source:F rom P. A. Schweitzer.2 004. CorrosionR esistanceT ables,
Vo ls. 1–4, 5th ed., New York: Marcel Dekker.
Corrosion of Linings and Coatings
164
CAT8247—CHAPTER 4—17/10/2006—14:36—SRIDHAR—XML MODEL B–pp. 69–174