[12] Patent
[11] Patent No.:GC0009305  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/141145
Date of the Decision to Grant the Patent:09/Dec/2018

[21] Application No.:GC 2011-18889

[22] Filing Date:20/7/2011

[30] Priority:

[33] State [32] Priority date [31] Priority No.
FR
22/7/2010
1003105

[72] Inventors:1- Guillaume CLEDAT،2- Jérôme MAZAJCZYK،3- Oscar GADEA UGARTE،4- Jose Ignacio ROYO

[73] Owner: CRAY VALLEY S.A, 16-32 Rue Henri Regnault, La Defense 6, Courbevoie 92400, France

[74] Agent: Kadasa Law Firm

  

 

  

[51]IPC:
Int. Cl.: C08G 63/08 (2006.01)

[56] Cited Documents:

-US 3784585 A (UPDEGRAFF I ET AL) 8 January 1974  
Examiner: Bander M. Al-Thobity

[54] UNSATURATED POLYESTER RESINS MODIFIED BY REPLACEMENT, WITH LACTIC ACID, OF AN ACID AND ALCOHOL COMPONENT OF THE POLYESTER
[57] Abstract: The invention relates to an unsaturated polyester resin comprising a) a lactic acid-modified unsaturated polyester and b) a copolymerizable comonomer, with replacement, with lactic acid, in the composition of an initial polyester, of:i) up to 90 mol% of phthalic anhydride of the acid component of the initial polyester, the acid component comprising from 80 to 20 mol% of maleic anhydride (MA) or fumaric acid, and from 20 to 80 mol% of phthalic anhydride (PA), the polyol component of the initial polyester comprising from 50 to 100 mol% of propylene glycol (PG) and from 0 to 50 mol% of a polyol among ethylene glycol (EG), diethylene glycol (DEG), dipropylene glycol (DPG) and/or 1,3-butylene glycol and/or 1,4 butanediol and/or neopentyl glycol (NPG),ii) up to 100% of a polyol from DPG and DEG, present in an initial overall molar amount ranging up to 50% of the polyol component of the initial polyester and also comprising PG, with the acid component of the initial polyester being maleic anhydride (MA) or fumaric acid, optionally in the presence of up to 20 mol% of the phthalic anhydride (PA) acid component, and in this case with the initial phthalic anhydride (PA) also being up to 100% replaced with lactic acid.The invention also relates to a thermosetting composition comprising the resin and to the uses of these resins and thermosetting compositions in moulding compositions or in general purpose compositions.
No. of claims: 33


 

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