Granted Patent
B2
US 12,258,495 · App. 16/720,149 · Granted Mar 25, 2025
Adhesive composition and methods of forming the same
Inventors:
Nicky Chan (Hudson, MA); Olivia Gady (Saint Martin de Jussac, FR); Choung-Houng Lai (Acton, MA); Yubo Cui (Shrewsbury, MA); James N. Gordon (Waban, MA)
C09J151/003C08F2/50C08F220/06C08F220/1808C08F220/1811C08F236/20C08F236/22C08K5/0025C08K5/01C08K5/132C08K5/37C08K7/28C09J7/38C09J133/08C09J133/10G01R23/005G01R31/002G01R31/30G01R31/31709G01R31/31719H04L9/0866H04L9/3278C09J2203/00C09J2400/14C09J2400/22C09J2423/106C09J2423/166G01R31/31703
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Abstract
An adhesive may include an adhesive structure and an adhesive composition. The adhesive structure may include a graft copolymer. The adhesive composition may include at least about 1 wt. % and not greater than 40 wt. % of a macromonomer component for a total weight of the adhesive composition, at least about 50 wt. % and not greater than about 98 wt. % of a (meth)acrylic based polymeric component A for a total weight of the adhesive composition, and at least about 0.1 wt. % and not greater than about 30 wt. % of a tackifier component for a total weight of the adhesive composition. The macromonomer component may have a weight-average molecular weight of at least 1000 g/mol and a glass transition temperature (Tg) of at least about 40° C. The (meth)acrylic based polymeric component A may have a glass transition temperature (Tg) of not greater than about 20° C.
Claims (24)
1. An adhesive comprising an adhesive structure and an adhesive composition, wherein the adhesive structure comprises a graft copolymer and wherein the adhesive composition comprises:
at least 1 wt. % and not greater than 40 wt. % of a macromonomer component for a total weight of the adhesive composition;
at least 50 wt. % and not greater than 90 wt. % of a (meth)acrylic based polymeric component A for a total weight of the adhesive composition; and
at least 0.1 wt. % and not greater than 30 wt. % of a tackifier component for a total weight of the adhesive composition,
wherein the macromonomer component has a weight-average molecular weight of at least 1000 g/mol,
wherein the macromonomer component has a glass transition temperature of at least 40° C., and
wherein the (meth)acrylic based polymeric component A has a glass transition temperature (Tg) of not greater than 20° C.
2. The adhesive of claim 1 , wherein the graft copolymer of the adhesive structure comprises a backbone portion and a grafted side chain portion, wherein the backbone portion comprises the (meth)acrylic based polymeric component A, and wherein the grafted side chain portion comprises the macromonomer component.
3. The adhesive of claim 1 , wherein the graft copolymer of the adhesive structure is formed via radiation initiated polymerization.
4. The adhesive of claim 1 , wherein the (meth)acrylic based polymeric component A comprises a reaction product of polymerizable material comprising:
at least 0.1 wt. % and not greater than 10 wt. % of a monomer component a1 for a total weight of the (meth)acrylic based polymeric component A, wherein the monomer component a1 comprises an ethylenically unsaturated functional monomer with a pendant hydrogen bonding group; and
at least 80 wt. % and not greater than 99 wt. % of a monomer component a2 for a total weight of the (meth)acrylic based polymeric component A, wherein the monomer component a2 comprises an ethylenically unsaturated monomer.
5. The adhesive of claim 4 , wherein the monomer component a1 comprises ethylenically unsaturated functional monomer selected from the group consisting of acid containing (meth)acrylic monomers, hydroxyl containing (meth)acrylic monomers (2-hydroxyethyl (meth) acrylate), a nitrogen containing monomer having a primary, secondary, or tertiary amino group, and a nitrogen containing monomer having a primary, secondary, or tertiary amido group.
6. The adhesive of claim 4 , wherein the monomer component a2 comprises an acrylic ester of the formula C═C(R 2 )(COOR 1 ) where R1 is a alkyl group containing 1 to 24 carbons, and R2 is H or methyl.
7. The adhesive of claim 1 , wherein the macromonomer component comprises a (meth)acrylic monomer having a pendant alicyclic functional group, wherein said macromonomer component is capable of being polymerized in a free radical polymerization process.
8. The adhesive of claim 1 , wherein the tackifier component comprises C5, C9, C5/C9, dicyclopentadiene, terpene, or their hydrogenated resins, or combinations thereof.
9. The adhesive of claim 2 , wherein the graft copolymer of the adhesive structure is formed via radiation initiated polymerization.
10. The adhesive of claim 2 , wherein the (meth)acrylic based polymeric component A comprises a reaction product of polymerizable material comprising:
at least 0.1 wt. % and not greater than 10 wt. % of a monomer component a1 for a total weight of the (meth)acrylic based polymeric component A, wherein the monomer component a1 comprises an ethylenically unsaturated functional monomer with a pendant hydrogen bonding group; and
at least 80 wt. % and not greater than 99 wt. % of a monomer component a2 for a total weight of the (meth)acrylic based polymeric component A, wherein the monomer component a2 comprises an ethylenically unsaturated monomer.
11. The adhesive of claim 2 , wherein the monomer component a1 comprises ethylenically unsaturated functional monomer selected from the group consisting of acid containing (meth)acrylic monomers, hydroxyl containing (meth)acrylic monomers, a nitrogen containing monomer having a primary, secondary, or tertiary amino group, and a nitrogen containing monomer having a primary, secondary, or tertiary amido group.
12. The adhesive of claim 11 , wherein the monomer component a2 comprises an acrylic ester of the formula C═C(R 2 )(COOR 1 ) where R1 is a alkyl group containing 1 to 24 carbons, and R2 is H or methyl.
13. The adhesive of claim 2 , wherein the macromonomer component comprises a (meth)acrylic monomer having a pendant alicyclic functional group, wherein said macromonomer component is capable of being polymerized in a free radical polymerization process.
14. The adhesive of claim 2 , wherein the tackifier component comprises C5, C9, C5/C9, dicyclopentadiene, terpene, or their hydrogenated resins, or combinations thereof.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Mar 23, 2020
From: CHAN, NICKY; GADY, OLIVIA; LAI, CHOUNG-HOUNG; CUI, YUBO; GORDON, JAMES N.
To: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
Reel/Frame 052196/0212 →
Continuity (2)
Provisional Application
62786016
· Dec 28, 2018
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