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# c12) United States Patent 

# Bernard et al. 

# (54) COMPOSITION COMPRISING SILYL DERIVATIVE AS DEHYDRATING AGENT 

(75) Inventors: Jean-Marie Bernard, Saint-Laurent d’ Agny (FR); Philippe Barbeau, Genas (FR) 

(73) Assignee: Vencorex France, Saint-Priest (FR) 

( *) Notice: Subject to any disclaimer, the term ofthis patent is extended or adjusted under 35 U.S.C. 154(b) by 150 days. 

(21) Appl. No.: 13/108,720 

(22) Filed: May 16, 2011 

## (65) Prior Publication Data 

US 2011/0282002 Al Nov. 17, 2011 

(63) Continuation-in-part of application No. 11/794,083, filed as application No. PCT/FR2005/003194 on Dec. 20, 2005, now abandoned. 

## (30) Foreign Application Priority Data 

Dec. 23, 2004 (FR) ...................................... 04 13847 

(51) Int. Cl. C08G18/02 (2006.01) 

## Related U.S. Application Data 

<img src='content_image/946365.jpg'>

# (IO) Patent No.: US 8,552,137 B2 

# (45) Date of Patent: Oct. 8, 2013 

(52) U.S. Cl. USPC .................................. 528/48; 528/51; 528/52 

(58) Field of Classification Search USPC ................................................ 528/48, 51, 52 See application file for complete search history. 

## (56) References Cited 

<img src='content_image/946358.jpg'>

## FOREIGN PATENT DOCUMENTS 

<img src='content_image/946357.jpg'>

Primary Examiner - Kuo-Liang Peng 

(74) Attorney, Agent, or Firm - Buchanan Ingersoll & Rooney PC 

## (57) ABSTRACT 

Disclosed is a compositions comprising isocyanate sub-com› position comprising by weight not more than 5% of diisocy› anate monomers, a dehydrating agent selected among com› pounds bearing dihydrocarbylsilyl groups bonded to a metalloid of the chalcogen column or to an atom of the nitro› gen column. The invention is applicable to the coatings indus› try, in particular paints and adhesives. 

US008552137B2 

## U.S. PATENT DOCUMENTS 

## 10 Claims, No Drawings 

