High resilience foams
A kind of resilience, foam technology, applied in examples 53 to 56 of 004/096882, in the field of flexible polyurethane foam, can solve problems such as reducing the rebound value of falling balls
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Embodiment 1-3
[0093] Examples 1-3 and comparative samples A-C:
[0094] The foams described in Table 1 were prepared using Method A:
[0095] Table 1, Examples 1-3 and Comparative Samples A-C
[0096] Example (Ex)
[0097] Example (Ex)
[0098] The data in Table 1 shows that PEOP-2 when used with NOPO-1 at levels up to 40% gives foam resiliency of 40% or greater. The rebound resilience of Comparative Samples A and C without NOPO-1 was above 50%. Comparative Example B of NOPO-1 based on PEOP-1 and 30PHP is just above 40% resilience and will therefore fail at 40PHP. This shows that the polyether polyol equivalent weight is important when using a combination of natural oil based polyols and polyether polyols to prepare HR foams.
Embodiment 4
[0099] Example 4 and comparative samples D-F:
[0100] Method A was used to prepare the foams described in Table 2:
[0101] Table 2, embodiment 4 and comparative samples D-F
[0102] Example (EX)
[0103] Example (EX)
[0104] Example (EX)
[0105] The data in Table 2 show that foams can be obtained with PEOP-2 and 30PHP NOPO-1, which have a resilience of 45% and low dry and humid aged Compression Sets. ). The properties of these foams were close enough to those of the control CS D to meet typical OEM specifications.
Embodiment 5-8
[0107] Method A was used to prepare the foams described in Table 3:
[0108] Table 3, Examples 5-8
[0109] Example (EX)
[0110] Example (EX)
[0111] The data in Table 3 show that foam properties are maintained by using the diol PEOP-3. CAT-1 (DMEA), although it opened the foam, was not as effective as CAT-2 in curing the foam skin and stabilizing the rising foam. However, the properties of the foam are maintained.
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