08-11-2018 дата публикации
Номер: US20180319926A1
Автор:
Sabrina Fregni,
Jun Cai,
Selvaggia Landi,
FREGNI SABRINA,
CAI JUN,
LANDI SELVAGGIA,
Fregni, Sabrina,
Cai, Jun,
Landi, Selvaggia
The present invention relates to a reactive formulation used to make a polyurethane foam which is particularly suited for use in under the hood vehicle applications which require sound deadening and vibration management and a process to make said foam. In particular, the polyurethane foam is made from a reactive formulation comprising an A side comprising (i) one or more organic isocyanate and a B side comprising (ii) one or more isocyanate-reactive component, (iii) a carbon nanofiller; and (iv) one or more additional component selected from a catalyst, a blowing agent, a cell opener, a surfactant, a crosslinker, a chain extender, a filler, a colorant, a pigment, an antistatic agent, reinforcing fibers, an antioxidant, a preservative, or an acid scavenger. 1. A reactive formulation for making a polyurethane foam comprising a mixture of: '(i) one or more organic isocyanate,', '(A) an A side comprising'}and (ii) one or more isocyanate-reactive component,', '(iii) a carbon nanofiller having at least one dimension equal to or less than 100 nm,', 'and', '(iv) one or more additional component selected from a catalyst, a blowing agent, a cell opener, a surfactant, a crosslinker, a chain extender, a flame retardant, a filler, a colorant, a pigment, an antistatic agent, reinforcing fibers, an antioxidant, a preservative, or an acid scavenger., '(B) a B side comprising2. The reactive formulation of wherein the organic isocyanate comprises monomeric MDI claim 1 , polymeric MDI claim 1 , combinations there of claim 1 , and/or liquid variants thereof obtained by introducing uretonimine and/or carbodiimide groups forming polyisocyanates claim 1 , said carbodiimide and/or uretonimine modified polyisocyanates having an NCO value of from 29 to 33 percent and included in said polyisocyanate is from 1 to 60 percent by weight of 2 claim 1 ,4′-diphenylmethane diisocyanate in the form of a monomer and/or a carbodiimidization product thereof.3. The reactive formulation of wherein said ...
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