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Water-based hybrid pressure sensitive adhesive composition and method of producing the same

A pressure-sensitive adhesive, composition technology, applied in the direction of adhesive type, ester copolymer adhesive, film/sheet adhesive, etc., can solve the problems of insufficient peel adhesion, poor reactivity, etc. , to achieve the effect of good peel adhesion and low silicone migration

Active Publication Date: 2021-01-26
DOW SILICONES CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008]However, due to the poor reactivity of acrylic monomers and reactive silicone resins with vinyl groups in water, from cured acrylic silicone Such Silicone Migration Issues Observed by ELPSA
Additionally, the peel adhesion of cured acrylic-silicone-based hybrid PSAs was insufficient

Method used

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  • Water-based hybrid pressure sensitive adhesive composition and method of producing the same
  • Water-based hybrid pressure sensitive adhesive composition and method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Preparation of water-based silicone PSA 1

[0099] 8.5 parts by mass of hydroxyl-terminated dimethylpolysiloxane gum having a Williams plastic number of 140, 12.6 parts by mass of a viscosity of about 80,000mm 2The hydroxyl group-terminated polydimethylsiloxane of / s, the 70 mass % MQ resin / xylene solution 1 of 16.4 mass parts (wherein M is (CH 3 ) 3 SiO 1 / 2 , Q is SiO 2 , and the ratio of M / Q is 0.75) and 23.1 mass parts of 75 mass % MQ resin / xylene solution 2 (wherein M is (CH 3 ) 3 SiO 1 / 2 , Q is SiO 4 / 2 , and a M / Q ratio of 0.9) were mixed together to obtain Silicone PSA 1. The mass ratio of MQ resin / polydimethylsiloxane in silicone PSA 1 was 1.4.

[0100] With the MQ resin of the polyether modification of 6.1 mass parts (with the MQ resin of 1 mass part (by (CH 3 ) 3 SiO 1 / 2 Cell and SiO 2 Unit composition, where (CH 3 ) 3 SiO 1 / 2 Cell and SiO 2 The molar ratio of units is 0.75) and 3 parts by mass of hydroxylated polyethylene oxide-polypropylene co...

Embodiment 2

[0102] Preparation of water-based silicone PSA 2

[0103] 9.35 parts by mass of hydroxyl-terminated dimethylpolysiloxane gum having a Williams plastic number of 140, 13.86 parts by mass of a viscosity of about 80,000mm 2 The hydroxyl group-terminated polydimethylsiloxane of / s, the MQ resin / xylene solution 1 of 70 mass % of 15.21 mass parts (wherein M is (CH 3 ) 3 SiO 1 / 2 , Q is SiO 2 , and the ratio of M / Q is 0.75) and 21.42 mass parts of 75 mass % MQ resin / xylene solution 2 (wherein M is (CH 3 ) 3 SiO 1 / 2 , Q is SiO 4 / 2 , and a M / Q ratio of 0.9) were mixed together to obtain Silicone PSA 2. The mass ratio of MQ resin / polydimethylsiloxane in Silicone PSA 2 is 1.2.

[0104] With the MQ resin of the polyether modification of 6.1 mass parts (with the MQ resin of 1 mass part (by (CH 3 ) 3 SiO 1 / 2 Cell and SiO 2 Unit composition, where (CH 3 ) 3 SiO 1 / 2 Cell and SiO 2 The molar ratio of units is 0.75) and 3 parts by mass of hydroxylated polyethylene oxide-polypropy...

Embodiment 3

[0106] Preparation of water-based silicone PSA 3

[0107] 7.35 parts by mass of hydroxyl-terminated dimethyl polysiloxane gum having a Williams plastic number of 140, 10.89 parts by mass of a viscosity of about 80,000mm 2 The hydroxyl group-terminated polydimethylsiloxane of / s, the MQ resin / xylene solution 1 of 70 mass % of 17.92 mass parts (wherein M is (CH 3 ) 3 SiO 1 / 2 , Q is SiO 2 , and the ratio of M / Q is 0.75) and 25.24 mass parts of 75 mass % MQ resin / xylene solution 2 (wherein M is (CH 3 ) 3 SiO 1 / 2 , Q is SiO 4 / 2 , and a M / Q ratio of 0.9) were mixed together to obtain Silicone PSA 3. The mass ratio of MQ resin / polydimethylsiloxane in Silicone PSA 3 was 1.8.

[0108] With the MQ resin of the polyether modification of 6.1 mass parts (with the MQ resin of 1 mass part (by (CH 3 ) 3 SiO 1 / 2 Cell and SiO 2 Unit composition, where (CH 3 ) 3 SiO 1 / 2 Cell and SiO 2 The molar ratio of units is 0.75) and 3 parts by mass of hydroxylated polyethylene oxide-polyp...

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Abstract

A water-based hybrid pressure sensitive adhesive composition and a method of producing the same. The composition comprises: (A) 100 parts by mass of a siliconepressure sensitive adhesive; (B) 5 to 80parts by mass of an acrylic pressure sensitive adhesive; (C) water in a sufficient amount to emulsify or disperse components (A) and (B) in component (C); and (D) 0.1-10 parts by mass of an amino-functional alkoxysilane compound, a hydrolysate thereof, or a hydrolyzed condensate thereof, wherein components (A) and (B) are emulsified or dispersed in component (C). The composition can be cured to form a pressure sensitive adhesive exhibiting good peel adhesion and low silicone migration.

Description

technical field [0001] The present invention relates to water-based hybrid pressure sensitive adhesive (PSA) compositions and methods for their preparation. Background technique [0002] Pressure sensitive adhesive (PSA) compositions may be formed into an adhesive product that adheres to a substrate when pressure is applied to bond the adhesive product to the substrate. Silicone PSA compositions, acrylic PSA compositions, hybrid PSA compositions, etc. are well known for various applications. [0003] The silicone PSA composition exhibits both good high temperature performance and good low temperature performance, has excellent chemical inertness, electrical insulation, and ability to bond to low surface energy substrates. However, a disadvantage of silicone PSA compositions is their high cost compared to other technologies. Other limitations include low tack and limited adhesion build-up (when necessary) compared to acrylic PSAs. [0004] At the same time, acrylic PSA com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/10C09J183/04C09J133/08
CPCC09J183/12C09J183/04C08G77/46C08G77/16C08K5/544C08L33/08C08L83/00C09J133/08C09J11/00C09J7/385C09J2301/302C09J183/06C09J2433/00C09J2483/00
Inventor 卢瑞华丁莉曲朝晖周彦刘志华许波驰樊蓉蓉
Owner DOW SILICONES CORP