Amine Catalyst

  C-88 is a tertiary amine designed for use in a broad range of rigid polyurethane foams.
The catalyst is a strong base and has typical amine odor. C-88 exhibits excellent blend stability and solubility in a wide variety of rigid polyurethane polyols and additives. It is noted that C-88 is soluble in water completely.

  C-88 is useful in great variety of rigid polyurethane applications from appliance to
board-stock to spray to pour-in-place. The product demonstrates a moderate catalysis of water/isocyanate reactions with a moderate catalysis of polyol/isocyanate reaction. As a result of this selectivity, C-88 is a moderate initiator of the foam reaction with moderate blow and good contribution to gel. Because of, these attributes C-88 is an effective initiator and flow catalyst for most rigid foam formulations.
 
  C-88 may be used as the sole catalyst, but open a co-catalyst is employed.
Recommended use levels are from 0.5 to 3.0 part per hundred of polyol depending on the reaction profile and the physical properties desired.

Properties Specification
Appearance Colorless-to-yellow liquid
Freezing point(¡É) < -50
Specific Gravity(25¡É) 0.7881
Boiling point(760§® Hg) 120¡É
Flash point(TCC, ¡É) 16
Water soluble Completely


¡Ø TCC : Tag Closed Cup(ASTM D56)

¢ºPerformance Data
  Handmix Foam Reactivity study based on a standard cyclopentane blown
formulation is used.
  This study is compared between our C-8(DMCHA) and C-88 (a tertiary amine blend based
on N,N,N'N'-tetramethylethyleneamine). The result is tabulated as below:
Component 1 2 3 4 5 6 7 8
polyol(OH-V 500)
Water
L-6900
C-8
C-42*
C-88
Cyclopentane
Total		 100
2
2
0.5
0.3
-
14
118.8		 100
2
2
1
0.3
-
14
119.3		 100
2
2
1.5
0.3
-
14
119.8		 100
2
2
2.0
0.3
-
14
120.3		 100
2
2
-
0.3
0.5
14
118.8		 100
2
2
-
0.3
1.0
14
119.3		 100
2
2
-
0.3
1.5
14
119.8		 100
2
2
-
0.3
2.0
14
120.3
Mixing Ratio(A:B) 100: 140 140 140 140 140 140 140 140
Reactivity Checking
Cream time, sec
Gel time, sec
Tack-free time, sec
Free-rise density, kg/m
16
66
125
30
13
59
110
30
10
55
88
29
10
50
84
28
13
70
120
29
11
65
110
29
10
53
90
29
10
46
80
28

¡Ý Niax Catalyst C-42 is a blend of tertiary amines for improving the de-molding time.
¡Ý The performance of C-88 is closely related to the catalysis performance of C-8(DMCHA).     One can substitute C-8(DMCHA) with lower level of dosage
    to maintain similar blow and gel characteristics.