Loading patent…
AssigneeArkema Inc.
InventorsBrett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
Estimating the term…
The present invention relates to blowing agent compositions comprising (1) at least one hydrofluoroolefin (HFO) and (2) at least one hydrochlorofluoroolefin (HCFO) used in the preparation of foamable thermoplastic compositions. The HFOs of component (1) include, but are not limited too, 3,3,3-trifluoropropene (HFO-1243zf), 1,2,3,3,3-pentafluoropropene (HFO-1225ye), cis- and/or trans-1,3,3,3-tetrafluoropropene (HFO-1234ze), and 2,3,3,3-tetrafluoropropene (HFO 1234yf), and mixtures thereof. The HCFOs of component (2) include, but are not limited to, 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and mixtures thereof. The blowing agent compositions are useful in the production of low density insulating foams with improved k-factor.
A thermoplastic foam product comprising a blowing agent composition comprising a combination of 3,3,3-trifluoropropene and 2 wt % to about 90 wt % 1-chloro-3,3,3-trifluoropropene wherein thermoplastic foam product has a density less than about 24-50 kg/m3 at a blowing agent loading of from about 7 to about 13 wt %.
Dependencies are inferred from the claim text.