Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1996-02-09
1999-01-05
Cooney, Jr., John M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
264 451, 428160, 4283155, 4283184, 4283186, 4283193, 4283197, 428324, 428363, 4284231, 4284232, C08G 1804
Patent
active
058563717
ABSTRACT:
For the production of sandwich structure elements comprising non-cellular polyurethane layers and polyurethane foamed layers which are produced on a substrate by the application of layers to a substrate, it is proposed that at least the non-cellular polyurethane layers contain 15 to 55% by weight of mica. Sandwich structure elements are obtained which are particularly dimensionally accurate and which adhere well. The effect is believed to be based on a non-homogeneous curing reaction of the mixture which reacts to form polyurethane, due to the presence of mica.
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Grimm Wolfgang
Hausmann Heinz
Mandel Hans
Prolingheuer Ernst-Christoph
Bayer Aktiengesellschaft
Cheung Noland J.
Cooney Jr. John M.
Gil Joseph C.
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