Document RpqL07aorxZzdNenoOOGy843z
MM (SOM)
TENNECOinteroffice memo
CHEMICALS,
INC.
To H.B. Carr
from
Kanzler
Subject Residual VCM in Compound
At Piscataway At Burlington
date October 23, 1974
copy toyw.c. Champion / File
At your request, the following is a summary of the analysis performed on compounds and Compound Plant air samples:
1. Residual VCM in Compounds (Table I)
The flexible compounds listed in this table show an almost complete removal of VCM, including the 200-2 type Hooker resin. It appears that the majority of the monomer is removed in the ribbon blender, while only little reduction of the residual VCM is noted in the CM and mill operations. The 250-12S resin used in the manufacture of the 2022 Gray 148 was produced in Flemington and the residual mon omer level is typical for a non-steam stripped resin of this type.
The record compounds (3805D) listed show residual monomer levels different from the flexible compounds. This is primarily due to the difference in the blending - no heat on the ribbon blender. It may be of interest to note that the resins used in the compounds sampled from 3/26/74 and 9/27/74 were stripped at 190F, while the resin used on 8/1/74 and 8/2/74 were stripped at 220F.
2. VCM in Air (Table II)
Air samples taken in the blender headspace and in the blender area during flexible runs confirms the high VCM loss during the dry blend step in those compounds. No blender air sample data are available for record compounds, however, samples taken at the pig conveyor and in the mill area show relatively high levels of VCM in air.
3. Residual VCM loss During Dry Blending (Table III)
A blender time-study reveals a steady decrease of residual VCM in
the.resin, associated with a sharp increase of VCM in the blender
headspace.
,
dtul
F.W. Kanzler
Attachments (3).
FWK/jst
COLORITE 013380
r LE I
residual vcm in compound
Compound Formulation
3160 Green 107 (3/20/74)
2022 Gray 148 (3/21/74)
2900 Natural (4/5/74)
3805D Black (3/26/74)
3805D Black (8/1/74) 3805D Black (8/2/74)
*
3805D Black (9/27/74)
Resin
Im. 200-2* 250-12S 225**
315
VCM, ppm 2500 250 610 150
315 18 315 76
315 -
Compound - VCM, ppm
In Ribbon Blender
After Preheat Before Drop
237 0
195
265 <1
540 2
- 220
--
-- 270
CM Feed Pig
10 5 <1 XI *1 X1 220 105 ----
Mill Slab 5
-<1 XI 120
-
Pellets 4
<1 <1 105
15 11 180
*Equivalent 200-2 Resin from Hooker **Firestone 9300
COLORITE 0 1 3 3 8 1
F.W. Kanzler 10/23/74
COLORXTE 0 1 3 3 8 2
Compound Formulation 3160 Green 107 2022 Gray 148 2900 Natural 2700 White 3098 Clear 6
*
38OSD Black 38OSD Black
TABLE VCM IN AIR - COMPOUND PLANT
In Ribbon Blender 1230 82 1.1
* 1420 64 -
"* VCM, ppm
Blender Area 43 "(1
-
-
2 -
*
Pig Conveyor
-
<1 . <1
5 12
Mill Area <1 <1
-
<1 <1 <1
3
F.W. Kanzler 10/23/74
Compound Formulation 2022 Gray
*
TABEF TI VCM LOSS IN RESIN DURING DRY BLENDING
Resin Type 250-12S
Time in Blender, Min 2 7
12 17 27
Resin
VCM, ppm Blender Headspace
475 ,280
345 1150
325 1190
235 2455
155 2885
COLORXTE 0 1 3 3 8 3
4
F.W. Kanzler 10/23/74
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