C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/14 (2006.01) C08K 5/02 (2006.01) C08L 23/06 (2006.01) C08L 23/12 (2006.01) C08L 25/06 (2006.01)
Patent
CA 2681605
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.
La présente invention concerne des compositions d'agent d'expansion comportant (1) au moins une hydrofluorooléfine (HFO) et(2) au moins une hydrochlorofluorooléfine (HCFO) utilisées dans la préparation de compositions thermoplastiques expansibles. Les HFO du composant (1) comprennent, sans s'y limiter, le 3,3,3-trifluoropropène (HFO-1243zf), le 1,2,3,3,3-pentafluoropropène (HFO-1225ye), le cis- et/ou le trans- 1,3,3,3-tétrafluoropropène (HFO-1234ze) et le 2,3,3,3-tétrafluoropropène (HFO 1234yf) et des mélanges de ceux-ci. Les HCFO du composant (2) comprennent, sans s'y limiter, le 1-chloro-3,3,3-trifluoropropène (HCFO-1233zd), le 2-chloro-3,3,3-trifluoropropène (HCFO-1233xf) et des mélanges de ceux-ci. Les compositions d'agent d'expansion s'utilisent dans la production de mousses isolantes de faible densité avec un facteur k amélioré.
Bonnet Philippe
Chen Benjamin B.
Elsheikh Maher Y.
Van Horn Brett L.
Arkema Inc.
Borden Ladner Gervais Llp
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