Cavity blocks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 5, 2016
Grant Date -
Feb 28, 2013
app pub date -
Aug 27, 2012
filing date -
Aug 30, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Cavity blocks contain a rigid polyurethane foam having a density in the range of 30-70 g/L in at least one chamber, the rigid polyurethane foam being obtained by reacting at least one polyisocyanate a) with at least one compound having at least two isocyanate-reactive hydrogen atoms b) in the presence of at least one catalyst d) and using at least one blowing agent c), comprising at least one blowing agent ci), which only develops its blowing effect at the time of the reaction of a) with b), and at least one blowing agent cii), which has a boiling point which is below the temperature at which said components a) and b) are mixed, wherein the pressure buildup during the foaming reaction of the polyurethane remains below 20 kPa, and the invention also relates to the corresponding process for producing the cavity blocks.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully