Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1978-06-19
1979-09-11
Cockeram, H. S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
264321, 521 52, 521132, 521137, 521160, 521914, 428425, B29D 2700, C08G 1814, C08G 1863, C08G 1832
Patent
active
041676122
ABSTRACT:
Flexible polyurethane foams having low resistance to air flow and, in addition, having good load bearing characteristics and high strength comprising the reaction product of polyisocyanate, a polyol blend including about 40-60 percent by weight of a polyether triol having an average molecular weight of about 4500-6500 and about 60-40 percent by weight of a reinforced polymer polyol having an average molecular weight of about 4500-5500 for the base polyol, and a low molecular weight cross-linking agent, such as 1,4-cyclohexanedimethanol or 4,4' methylene-bis (2-chloroaniline). Preferably the air flow characteristics are improved by crushing the reaction product before it is fully cured.
REFERENCES:
patent: 2961710 (1960-11-01), Stark
patent: 3060137 (1962-10-01), Gemeinhard et al.
patent: 3171820 (1965-03-01), Volz
patent: 3175025 (1965-03-01), Geen et al.
patent: 3405217 (1968-10-01), Garrett et al.
patent: 3425890 (1969-02-01), Powers
patent: 3862282 (1975-01-01), Watson
patent: 3869413 (1975-03-01), Blankenship
patent: 3884848 (1975-05-01), Ricciardi et al.
patent: 3890254 (1975-06-01), Guthrie
Fracalossi Roland N.
Tucker Richard B. C.
Wajer Mark T.
Breiner A. W.
Cockeram H. S.
Wm. T. Burnett & Co., Inc.
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