Chemicals from Armour improve poiyurethane Polyurethane Foam Catalysts
Ν - coco morpholine for improved * 'clickability' '
Requirements for catalysts of polyester and polyether urethane foams are widely diversified, depending on the desired results. In working with catalysts for polyurethane, Armour developed two chemical types of tertiary amine catalysts: alkyl dimethyl amines; N-coco morpholine. Both types exhibit strong base strengths and unhindered catalytic activity. Armeen® Dimethyl Amines
Armour's Alkyl Dimethyl Amines are foam catalysts of superior capabilities. They improve foam cell struc ture, impart better physical characteristics and re duce processing time. These Armeens lower foam shrinkage and increase load-bearing capacities. They are extremely econom ical since they are effective in concentrations of 1 part catalyst per 100 parts resin. Armeen catalysts are easily dispersed into "oneshot" systems or "pre-polymer" systems by proper machine-head agitation. Because of their lower vola tility the Armeens also reduce chemical loss due to evaporation. Low vapor pressures impart negligible odor levels during handling and manufacture of urethane foams; cured foams are found to be virtually odor free. Physical and chemical properties of the Armeen Dimethyl Amines Tertiary Amine Min.%
App.
Mol. Color W*. j Gardner Volatile Min.-Max. ' M a x . %Max.
Approx. Freeze Point
Armeen DMCD d i m e t h y l coco
92
228
248
2
1
-15°C
Armeen DM16D dimethyl hexadecyl
92
269
292
2
1
10°C
A r m e e n DMSD dimethyl soya
92
292
318
2
1
Armeen DM18D dimethyl octadecyl
92
297
323
2
1
56
c&
ΕΝ
-
8°C
20°C
Manufacturers and users of polyurethane foam now can produce a foam product with superior clickability. Clickability is the desirable characteristic that allows a foam to be easily cut or machined into its desired final shape. Armour's N-coco morpholine permits polyure thane to be die-cut, stamped, sewn, or otherwise ma chined without any difficulty. All manufacturers of flexible polyester slab stock will find this versatile catalyst an essential addition to their foam-making formulations. Physical and chemical properties of N-coco morpholine
Tertiary Amine Min. %
88
Mol. Wt. Min. M a x .
264
280
Color Gardner Max.
Volatile % Max.
Primary and Secondary Amine-Max.
13
1
2%
Improved clickability is only one of many advan tages that n-coco morpholine enjoys over other cata lysts for making polyurethane foam. N-coco morpholine is a moderately slow catalyst that will afford uniform cell structure, reduce "tackfree" time, and generally improve the physical proper ties of polyester foam. This Armour chemical is a convenient catalyst to use. It is in a liquid state at room temperatures and is easily dispersed into ' 'one-shot' ' water systems. Foams using N-coco morpholine show marked re duction in shrinkage and have increased load-bearing capacities. In addition, this catalyst has a pleasant, very faint lemon odor that will mask disagreeable odors of low molecular weight morpholine catalysts.
NEW DEVELOPMENTS FROM ARMOUR Dust-Free Vinyl Thermoplastic manufacturers, who have been searching for a truly effective anti static agent, will be pleased to learn about this latest Armour development. Armour's ethoxylated quaternary am monium chlorides offer a new, economi cal solution to the problem of electro static build-up in vinyl products. Poly vinyl and polyethylene products can be made permanently anti-static by incor porating Armour's Ethoquad® C/12 into your formulation. Ethoquad C/12 elimi nates electrostatic build-up during manu facture, and also assures finished prod ucts an attractive, clean appearance.
and latex foams
Armour Ethoquads work more effec tively because there are two separate mechanisms in the Ethoquad molecule that can reduce electrostatic build-up. These mechanisms, working independ ently, offer better protection than most other anti-static agents which have only the protection of a single mechanism.
Latex Gel-sensitizers Because of their unique gel-sensitizing properties, Armour's quaternary ammonium compounds cut processing time and costs for makers of latex foam. Latex manufacturers use gel-sensitizers to control the gelation process. However, the action of ordinary sensitizers depends upon the formation of a complex to reduce the chemical stability of the latex and allow a firm gel to form. Arquad® T-50 offers substantial improvement over sensitizers which depend on the formation of a complex. Therefore, this Armour sensitizer can be added to the latex prior to foaming. This processing advantage allows the manufacturer to make larger batches of foam, because the Arquad does not begin to work until other ingredients, such as zinc oxide, are added. Armour's Arquad 12-50 also demonstrates im proved advantages over ordinary gel-sensitizers. In particular, where low-density foams are required, as in pillows, almost 100% natural rubber must be used. Finished products of this nature must be free from odor, light in color and of uniform cell size. Arquad 12-50 imparts all of these characteristics. Both Arquad T-50 and 12-50 have common advan tages that have contributed to their popularity among latex foam makers. Three important advantages are: Controlled Gelation —By using a fixed amount of sodium silicofluoride, the rate of gelation can be con trolled by varying the amount of Arquad used. Thus the time of gelation can be governed to suit the process. Increased Gel Strength—Cationic properties of the Arquads reduce the charge on the rubber particle and render the latex more susceptible to the gelling ac tion of the acids. This susceptibility makes a better, stronger gelation. Versatility of Use—Both Arquads allow manufactur ers to use a wide range of ratios of synthetic to natural rubber. Therefore giving you a greater latitude in formulation. For additional information on Armour's foam catalysts and gel-sensitizers, and to receive samples of them, fill out and mail the convenient coupon.
To find out how this Armour chemical can be incorporated into your vinyl prod ucts, use the convenient coupon.
Leader in progressive fatty acid
chemistry
Armour Industrial Chemical Company © Division of Armour and Company
Send for information and samples Send further information on: Latex gel-sensitizers • Foam catalysts • Anti-static agents for plastics • Send a sample nf !
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Armour Industrial Chemical Company · 110 N. Wacker Dr., Chicago 6, III.
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