	US 12,404,430 B2
	Hot melt adhesive for insulating glass spacer and preparation method therefor
Yunlong Li, Zhejiang (CN); Binjie Wang, Zhejiang (CN); Youzhi Chen, Zhejiang (CN); Fengfeng Li, Zhejiang (CN); Xiaole Tao, Zhejiang (CN); Ming Liu, Zhejiang (CN); and Yongfu He, Zhejiang (CN)
Assigned to HANGZHOU ZHIJIANG ADVANCED MATERIAL CO., LTD, Zhejiang (CN); and HANGZHOU ZHIJIANG SILICONE CHEMICALS CO., LTD, Zhejiang (CN)
Appl. No. 18/008,166
Filed by HANGZHOU ZHIJIANG ADVANCED MATERIAL CO., LTD, Zhejiang (CN); and HANGZHOU ZHIJIANG SILICONE CHEMICALS CO., LTD, Zhejiang (CN)
PCT Filed May 21, 2021, PCT No. PCT/CN2021/095108 § 371(c)(1), (2) Date Dec. 3, 2022, PCT Pub. No. WO2022/151624, PCT Pub. Date Jul. 21, 2022.
Claims priority of application No. 202110063913.8 (CN), filed on Jan. 18, 2021.
Prior Publication US 2023/0272251 A1, Aug. 31, 2023
Int. Cl. C09J 123/20 (2006.01); C09J 11/04 (2006.01); C09J 11/06 (2006.01); C09J 11/08 (2006.01); E06B 3/56 (2006.01)

CPC C09J 123/20 (2013.01) [C09J 11/04 (2013.01); C09J 11/06 (2013.01); C09J 11/08 (2013.01); E06B 3/56 (2013.01)]

8 Claims

1. A hot melt adhesive for insulating glass spacer, prepared from raw materials comprising the following components:

1-10 parts by weight of butyl rubber;

25-50 parts by weight of a polyisobutylene mixture;

5-15 parts by weight of a tackifying resin;

1-15 parts by weight of a tackifier;

5-15 parts by weight of a polymer;

0.1-1 part by weight of a lubricant;

0.1-1 part by weight of an antioxidant;

15-50 parts by weight of a filler;

1-10 parts by weight of a water absorbent;

5-25 parts by weight of carbon black;

wherein the polymer is selected from the group consisting of one or more of styrene-butadiene rubber, an amorphous α-olefin copolymer, an ethylene-vinyl acetate copolymer, polystyrene, a styrene-butadiene-styrene copolymer, a styrene-isoprene-styrene copolymer, and a styrene-polyisobutylene-styrene copolymer, the butyl rubber has a viscosity-average molecular weight of 800,000-1,500,000, the tackifier is selected from the group consisting of one or more of polyisobutylene modified by silane coupling agent, amorphous α-polyolefin modified by silane coupling agent and metallocene catalyzed vinyl copolymer modified by silane coupling agent.