US 11,834,568 B2
Latex composition for dip-forming, method for preparing the composition and article formed by the composition
Yong Seok Jung, Daejeon (KR); Won Sang Kwon, Daejeon (KR); Ji Hyun Kim, Daejeon (KR); and Seung Whan Oh, Daejeon (KR)
Assigned to LG Chem, Ltd.
Appl. No. 16/978,084
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Dec. 12, 2019, PCT No. PCT/KR2019/017619
§ 371(c)(1), (2) Date Sep. 3, 2020,
PCT Pub. No. WO2020/122647, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 10-2018-0161343 (KR), filed on Dec. 13, 2018; and application No. 10-2019-0162685 (KR), filed on Dec. 9, 2019.
Prior Publication US 2021/0017362 A1, Jan. 21, 2021
Int. Cl. C08L 13/02 (2006.01); C08J 5/02 (2006.01); C08J 3/09 (2006.01)
CPC C08L 13/02 (2013.01) [C08J 3/09 (2013.01); C08J 5/02 (2013.01); C08J 2313/02 (2013.01); C08J 2433/10 (2013.01); C08J 2471/12 (2013.01)] 10 Claims
 
1. A latex composition for dip forming, comprising:
carboxylic acid-modified nitrile-based copolymer latex;
a phenolic emulsifier; and
an alkali soluble emulsion (ASE) thickener,
wherein the phenolic emulsifier is included in an amount of 0.08 parts by weight to 6 parts by weight (based on a solid content) based on 100 parts by weight of the carboxylic acid-modified nitrile-based copolymer latex, and
wherein the ASE thickener is represented by the following Formula 3,

OG Complex Work Unit Chemistry
wherein, in Formula 3, R1 and R2 each independently represent hydrogen; R3 and R4 each independently represent hydrogen or a methyl group; R5 represents an alkyl group having 1 to 4 carbon atoms; and x and y are each independently an integer selected from 10 to 1000; and
wherein * refers to a linking position between repeating units represented by x and/or y or an end group in a copolymer, or in a case where * is the end group, * is hydrogen or an alkyl group having 1 to 4 carbon atoms.