c12)  United States Patent  Bernard et al.  (IO)  Patent No.:  US 8,188,171 B2  May 29, 2012  (45)  Date of Patent:  (54)  POLYISOCYANATE COMPOSITION HAVING  IMPROVED IMPACT-PROOF PROPERTIES  (75)  Inventors:  Jean-Marie Bernard,  Saint Laurent  d’  Agny (FR);  Mathias Dubecq,  Lyons  (FR)  (73)  Assignee:  Rhodia Chimie,  Aubervilliers (FR)  ( *)  Notice:  Subject to any disclaimer, the term ofthis  patent is extended or adjusted under 35  U.S.C. 154(b) by 992 days.  (21)  Appl. No.:  11/793,489  (22)  PCT Filed:  Dec. 20, 2005  (86)  PCT No.:  PCT /FR2005/003197  § 371 (c)(l),  (2), ( 4) Date:  Oct. 29, 2007  (87)  PCT Pub. No.:  WO2006/067326  (51)  Int. Cl.  C0SK 5100  (2006.01)  (52)  U.S. Cl.  .....................  524/123;  427/385.5; 526/310;  528/44; 528/45; 528/68  (58)  Field of Classification Search  ................... 524/123  See application file for complete search history.  36 Claims, No Drawings  (57)  ABSTRACT  FOREIGN PATENT DOCUMENTS  U.S. PATENT DOCUMENTS  (56)  References Cited  (65)  Prior Publication Data  (30)  Foreign Application Priority Data  5,877,254 A *  5,977,246 A *  6,217,941 Bl*  6,509,396 Bl *  3/1999 La Casse et al ............... 524/590  11/1999 Fenn ............................. 524/590  4/2001 Bernard et al ................ 427/358  1/2003 Hoppe et al. .................... 524/35  2001/0021746 Al  2004/0242833 Al  9/2001 Nabavi et al.  12/2004 Bernard  DE  EP  FR  GB  JP  JP  JP  WO  197 25 507 Al  1 074 590 A2  2 243 983 Al  1 487 563  08-176477  2001-323123  2003-292887  01/05861 Al  12/1998  2/2001  4/1975  10/1977  7 /1996  11/2001  10/2003  1/2001  * cited by examiner  Primary Examiner  - Doris Lee  (74)  Attorney, Agent, or Firm  - Buchanan Ingersoll &  Rooney PC  The invention relates to the use of additived (poly)isocyanate  compositions for producing coatings, especially paints or  varnishes for car bodywork parts, said compositions having  excellent impact-resistant properties, especially grit-resistant  properties.  Dec. 21, 2004  (FR) ...................................... 04 13669  US 2008/0044578 Al  Feb. 21, 2008  PCT Pub. Date:  Jun. 29, 2006  US008188171B2 