Document VJaELRNadGxkwLLBO967Nm9Bj
Mr. A. J. Coatantin BOUND BROOK OFFICE
Mr. J. H. Field Mr. P. T. McCoy
January 4, 1963
Type "O" Vinyl Resina Minnesota Minina and Manufacturing
In view of our plans to produce GSQH and QSCL for rigid applications, these should possibly be tested at 3 M for their rigid tap application. I don't think we would want to produce QSOK-7 for 3 M unless the volume justified it.
Very truly yours.
RNW/ra
R. N. Wheeler
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INTERNAL CORRESPONDENCE'
RECEIVED JAN 2 1968
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C'r"-.`.':iCALS AT; PLASTiCo ,
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Mr. C. A. Strong 2040 West Wisconsin Avenue Milwaukee, Wisconsin
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December 27, 1967
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See Distribution List
Subject
Type "0" Vinyl Resins Minnesota Mining and Manufacturing _____ (3 M) Evaluation
Dear Mr. Strong:
This is to summarize briefly the essence of our recent telephone conversa tions and one with Bill Nitardy of 3 M's Retail Tape Division relative to their evaluation of three grades of our new "O" resins. Briefly, QSOS Blend 2, QSOM Blend 8 and QSOH in an extended rigid tape application Blend 1 were evaluated and assessed as unsatisfactory for the following reasons:
QSOS and QSOM
-
Poor processibility Melt fracture Surface irregularities
QSOH
Melt fracture
Low heat distortion
/ 3- "
Surface irregularities
"J QSOH was indicated as our only serious contender but not at a premium
if only comparable performance with conventional PVC is obtained. A premium may be
considered if a definite superiority over conventional resins may be obtained.
As you know, 3 M is very close-mouthed, but the following information was obtained from Mr. Nitardy. The preblends were unfilled and prepared in an inten sive mixer, not a Henschel or Papenmeir. The extruder was a conventional 24:1 L/D with a constant-pitch, decreasing-depth screw. Mr. Nitardy would not reveal the film or sheet width or thickness. QYSJ exhibits a satisfactory performance in both extru sion and product performance. The Airco propylene modified PVC's extrude satisfacto rily but lack the required product physicals. No effort was expended to assess thermal stability or fisheyes.
Mr. Nitardy indicated a continuing interest in the "O" resins and requires a resin with:
Better FTceessibility Better Surface Characteristics Better Heat Distortion No Melt Fracture than the current candidates
Mr. C. A. Strong
p. 2 December 27, 1967
Several pertinent propertied of the subject resins and those of a suggested candidate for this application follows:
Suggested
QSOH-1
QSOM-8
QSOS-2
Candidate
1 QSOK?
o
00
l l--
Inherent viscosity Ethylene content Heating loss
Apparent density Resin flow Particle Size
Median Through 200
0.78 1.05 0.3
33. 3.4
160 7
0.96 1.39 0.4
29 2.6
156 1
1.32 1.85 0.5
27
195 0
---0.50 (1) 0.5 max
33-36 3.5 max
125-150 0
Initial Color Mill Test Extended
Fisheyes (Rig) App. Melt Vise. (Rig)
Contamination, slurry
102 -
2250
108 -
110 100 min. - "QYSJ - = QYSJ = QYSJ
3 max
(1) Adjusted to approximate apparent melt viscosity of QYSJ.
Several small experimental runs should enable an adjustment in inherent viscosity and ethylene content to achieve an apparent melt viscosity in the QYSJ range.
This information on this particular evaluation by the 3 M Retail Tape Division does not necessarily speak for the other 3 M divisions; their results are not yet known. The Retail Tape Division's evaluation would, however, indicate that more atten tion should be directed to the evaluation of "0" resins in rigid applications.
Very truly yours,
P.T. McCoy/js
DISTRIBUTION:
Dr. F. E. Bailey Mr. W. Hi Bauer Dr. C. K.i Fink Mr. J. A. |Field Mr. J. A. 'Francis Mr. N. R.; Gimber - Mr. J, F. Erdmann Dr. C. W. McGary Mr. D. E. Richardson Mr. G. C. Shipton - Mr. J. W. Schilling Mr. J. J. Smith Mr. J. R. Wilkinson Mr. R. N. Wheeler