US 12,378,344 B2
Polymer latex composition for the preparation of an elastomeric film having self-healing properties
Peter Shaw, Harlow (GB); Zhenli Wei, Johor Darul Takzim (MY); and Yi-Fan Goh, Johor Darul Takzim (MY)
Assigned to Synthomer Sdn. Bhd., Johor Darul Takzim (MY)
Appl. No. 17/633,428
Filed by Synthomer Sdn. Bhd., Johor Darul Takzim (MY)
PCT Filed Aug. 9, 2019, PCT No. PCT/MY2019/000034
§ 371(c)(1), (2) Date Feb. 7, 2022,
PCT Pub. No. WO2021/029763, PCT Pub. Date Feb. 18, 2021.
Prior Publication US 2022/0282015 A1, Sep. 8, 2022
Int. Cl. C08L 13/02 (2006.01); C08C 1/00 (2006.01); C08C 1/15 (2006.01); C08C 19/22 (2006.01); C08C 19/25 (2006.01); C08C 19/36 (2006.01); C08F 2/24 (2006.01); C08F 236/10 (2006.01); C08F 236/12 (2006.01); C08J 3/24 (2006.01); C08J 5/18 (2006.01)
CPC C08F 236/10 (2013.01) [C08C 1/15 (2013.01); C08C 19/22 (2013.01); C08C 19/25 (2013.01); C08C 19/36 (2013.01); C08F 2/24 (2013.01); C08F 236/12 (2013.01); C08J 3/24 (2013.01); C08J 5/18 (2013.01); C08L 13/02 (2013.01); C08F 2810/20 (2013.01); C08L 2312/00 (2013.01)] 19 Claims
 
1. An aqueous polymer latex composition for the preparation of an elastomeric film comprising:
(I) particles of a latex polymer obtained by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers' the particles bearing functional groups (a), wherein the latex polymer has an average gel content of less than 70 wt %; and
(II) a cross-linking component selected from monomeric compounds or oligomeric or polymeric compounds that are not prepared by free-radical addition polymerization, the cross-linking component comprising functional groups (b) and (c) that are different from each other,
wherein functional group (b) forms upon reaction with functional group (a) a thermally reversible linkage selected from one or more of
(i) a linkage having the structural formula

OG Complex Work Unit Chemistry
wherein
X is —O— or —NR1—,
n is 0 or 1,
R1 is hydrogen or a hydrocarbyl group, and
R2 is a hydrocarbyl group; and
(ii) a beta-hydroxy ester linkage;
wherein functional groups (c) on different molecules of component (II) are capable of reacting with each other.