Title:
高官能価ポリイソシアネートに由来するポリウレタンフォーム
Document Type and Number:
Japanese Patent JP6581314
Kind Code:
B2
Abstract:
A formulation system contains: (a) a pre-polymer reaction product of a polymeric isocyanate and a polyether polyol, where: (i) the polymeric isocyanate contains five weight-percent or more methylene diphenyl diisocyanate; (ii) the polymeric isocyanate has a functionality of 3.0 or less; (iii) the polyether polyol is present in the pre-polymer at a concentration of one to 25 weight-percent; (iv) the polyol has an equivalent weight of 50 to 500 grams per equivalent; (v) the −NCO concentration of the pre-polymer is 15 to 31 weight-percent; (vi) the pre-polymer is free of isocyanate trimers; (b) a polyester polyol component containing 10 to 25 weight-percent of free glycol; and (c) a blowing agent that contains less than five weight-percent water; where the ratio of pre-polymer and polyester result in foam having a trimer content of 12 to 22 weight-percent, and an −NCO index of more than 300 and less than 700.
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Inventors:
Christian A. Patterner
Mark F. Sonneshine
Stephen Pea Crane
Christina A. Lawton
Mark F. Sonneshine
Stephen Pea Crane
Christina A. Lawton
Application Number:
JP2018538542A
Publication Date:
September 25, 2019
Filing Date:
October 19, 2016
Export Citation:
Assignee:
Dow Global Technologies LLC
International Classes:
C08G18/00; C08G18/10; C08G18/40; C08G18/42; C08G18/48; C08G18/76
Domestic Patent References:
| JP2001316443A |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Satoshi Deno
Atsushi Ebiya
Naori Kota
Naoki Kobayashi
Shinji Mitsuhashi
Satoshi Deno
Atsushi Ebiya
Naori Kota
Naoki Kobayashi