Cellular polyurethanes

HydroxyethyUiydrazine (11) is a plant growth regulator. It is also used to make a coccidiostat, furazoHdone, and has been proposed, as has (14), as a stabilizer in the polymerization of acrylonitrile (72,73). With excess epoxide, polysubstitution occurs and polyol chains can form to give poly(hydroxyaLkyl) hydrazines which have been patented for the preparation of cellular polyurethanes (74) and as corrosion inhibitors for hydrauHc fluids (qv) (75). DialkyUiydrazines, R2NNH2, and alkylene oxides form the very reactive amineimines (15) which react further with esters to yield aminimides (16) ... [Pg.278]

Foam density is largely a function of the concentration of blowing agents. There has been a strong development towards the use of less expanded, i.e. higher density rigid cellular polyurethanes. This includes not only the so-called structural foams for simulated wood but also unexpanded solid materials used for brush handles and gun stocks. This range is clearly indicated in Table 27.4. ... [Pg.803]

In order to support and meet this demand an all-around development has taken place on the material front. Increasing automobile manufacmrers requirements and ever-growing customer expectations have resulted in the evolution of new product technology. As a consequence, mn-flat tire, closed cellular polyurethane (PU) tire, tweel tire, and active wheel system have become a reality on the road today and indicate a big change in the years to come. The manufacturing technology... [Pg.919]

Cellular and Non-Cellular Polyurethanes, International Conference, Hanser, Munich,... [Pg.135]

Cellular Polyurethane. Composed principally of the catalyzed reaction product of pulyisocyanatc and polyhydroxy compounds, processed usually with fluorocarbon gas to form a rigid foam having a predominantly closed-cell structure. Under investigation by regulators. [Pg.857]

Okagawa, F., Iwata, T., and Morinoto, T., Proceedings of the International Conference on Cellular and Non-Cellular Polyurethanes, Strasbourg, France, June 9-13, (1980), p. 453. [Pg.180]

Plastic Material, Cellular Polyurethane, Foam-in-Place, Rigid (3 pounds per cubic foot density) (1980)... [Pg.329]

ASTM C 591-85 Standard Specification for Unfaced Preformed Rigid Cellular Polyurethane Thermal Insulation, 4 pp (DOD Adopted) (FSC 5640) (YD) (Comm C-16)... [Pg.401]

ASTM C 945-81 (1987) Standard Practice for Design Considerations and Spray Application of a Rigid Cellular Polyurethane Insulation System on Outdoor Service Vessels, 11 pp (Comm C-16)... [Pg.419]

MIL-I-24172A(SH) Insulation, Cellular Polyurethane, Rigid, Preformed and Foam-in-Place, 19 November 1986, 10 pp (FSC 5640) (SH)... [Pg.429]

M1L-T-46586C(AR) Tube, Igniter for Charge, Propelling, 175 mm, M86A2 (Cellular Polyurethane), 13 June 1978, 8 pp SC 1320) (AR)... [Pg.433]

This specification covers a cellular polyurethane spacer with a density of 13.3 2.5 Ib/ft. There is a burning characteristic requirement. The specification was validated by Notice 1, 1 November 1990. [Pg.434]

Zengel, H. G. "Cellular and Non-Cellular Polyurethanes," International Conference SPI and FSK, Strasbourg, France, June 1980, Preprint Book, Carl Hanser Verlag, pp. 315-25. [Pg.1022]

PoroB . [Rogers] Cellular polyurethane used for gaskets, seals, vibration mounts, motor mounts, RF shielding, PCB cushions, spacers, foam-back tapes, athletic padding in automotive, elecyetecmmic industries. [Pg.293]

B. Kanner, E. D. Goddard and R. D. Kulkarni, Presented at the SPI and FSK Conference on Cellular and Non-cellular Polyurethanes, Strasbourg, France,... [Pg.256]

Cellular and Non-Cellular Polyurethanes, Carl Hanser Verlag, Munchen, Wien, 1980. D. C. Allport and A. Watts, Kunststoffe, 1980, 70,487. [Pg.69]

This technique has been used to measure the specific heat of polyamide 6, polypropylene, polymethylene methacrylate, rigid polyvinyl chloride and cellular polyurethane foam, high-density polyethylene, low-density polyethylene and polystyrene [48], epoxy resins [73], polypropylene [74], polymethyl methacrylate [75], high-density polyethylene, low-density polyethylene, polypropylene and polystyrene [77], and polytetrafluoroethylene [76],... [Pg.108]

Eventually, the application of microwave irradiation for blowing of polyurethane foams led to reduction in the amount of amine catalysts required by half. The possibilities of the application of partially decomposed cellular polyurethane waste under microwave irradiation to formulate modem ecological systems for manufacturing heat-insulating foams were also presented. [Pg.1007]

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