IP Library › Granted Patent US 12,522,756
Granted Patent B2
US 12,522,756 · App. 16/720,158 · Granted Jan 13, 2026

Adhesive composition and methods of forming the same

Inventors: Yubo Cui (Shrewsbury, MA); Thomas L. Adams (Gardner, MA); David A. Elliott (Queensbury, NY); James N. Gordon (Waban, MA)
Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
C09J133/08C08K5/01C09J7/38C08F220/06C08F220/1808C08F220/1811C08F220/20C08F226/06C08F236/20C08F236/22C08K5/132C08K5/37C08K7/28C09J2203/00C09J2400/14C09J2400/22C09J2423/106C09J2423/166
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Quick Facts
Patent No.
US 12,522,756
App. No.
16/720,158
Granted
Jan 13, 2026
Kind
B2
Abstract

An adhesive composition may include at least about 2 wt. % and not greater than 49 wt. % of a (meth)acrylic based polymeric component A for a total weight of the adhesive composition, at least about 51 wt. % of a (meth)acrylic based polymeric component B 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 (meth)acrylic based polymeric component A may have a glass transition temperature (Tg) of at least about 40° C. The (meth)acrylic based polymeric component B may have a glass transition temperature (Tg) of not greater than about 20° C. Further, the (meth)acrylic based polymeric component B may be acid-free.

Claims (50)

1 . An adhesive composition comprising:

at least about 2 wt. % and not greater than 25 wt. % of a (meth)acrylic based polymeric component A for a total weight of the adhesive composition;

at least about 73 wt. % of a (meth)acrylic based polymeric component B 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,

wherein the (meth)acrylic based polymeric component A comprises a reaction product of polymerizable material comprising:

at least about 40 wt. % and not greater than about 99 wt. % of a monomer component a1 for a total weight of the (meth)acrylic based polymeric component A, wherein the monomer component a1 is an ethylenically unsaturated monomer, and

at least about 0.1 wt. % and not greater than about 20 wt. % of a monomer component a2 for a total weight of the (meth)acrylic based polymeric component A, and

wherein the (meth)acrylic based polymeric component B comprises a reaction product of polymerizable material comprising:

at least about 40 wt. % and not greater than about 99 wt. % of a monomer component b1 for a total weight of the (meth)acrylic based polymeric component B, wherein the monomer component b1 is a C1-C24 acrylic ester, and

at least about 1 wt. % and not greater than about 60 wt. % of a monomer component b2 for a total weight of the (meth)acrylic based polymeric component B, wherein the monomer component b2 is an ethylenically unsaturated functional monomer selected from the group consisting of hydroxyl containing (meth)acrylic monomer and a nitrogen-containing monomer having a primary, secondary or tertiary amino group or an N,N-dialkylaminoalkyl (meth)acrylate,

wherein the (meth)acrylic based polymeric component A has a weight average molecular weight of at least about 30,000 g/mol and not greater than about 200,000 g/mol,

wherein the (meth)acrylic based polymeric component B has a weight average molecular weight of at least about 100,000 g/mol, wherein the tackifier component comprises C5, C9, C5/C9, dicyclopentadiene, or their hydrogenated resins, or combinations thereof,

wherein the monomer component a2 is N-hydroxyalkyl (meth) acrylamide.

2 . The adhesive composition of claim 1 , wherein the (meth)acrylic based polymeric component B is acid-free.

3 . The adhesive composition of claim 1 , wherein the (meth)acrylic based polymeric component A further comprises at least about 0.1 wt. % and not greater than about 60 wt. % of a monomer component a3 for a total weight of the (meth)acrylic based polymeric component A, wherein the monomer component a3 is an ethylenically unsaturated monomer and wherein the monomer component a3 is different than both the monomer component a1 and the monomer component a2.

4 . The adhesive composition of claim 3 , wherein the monomer component a3 comprises:

i. an acidic monomer having an acidic group and an ethylenically unsaturated group,

ii. a hydroxy-containing acrylic ester monomer having a hydroxyl group and an ethylenically unsaturated group,

iii. a nitrogen-containing monomer having a primary, secondary or a tertiary amino group or an N, N-dialkylaminoalkyl (meth)acrylate and a ethylenically unsaturated group,

iv. a vinyl monomer, or

v. a combination thereof.

5 . The adhesive composition of claim 1 , wherein the (meth)acrylic based polymeric component B further comprises at least about 0.1 wt. % and not greater than about 60 wt. % of a monomer component b3 for a total weight of the (meth)acrylic based polymeric component A, wherein the monomer component b3 is an ethylenically unsaturated monomer and wherein the monomer component b3 is different than both the monomer component b1 and the monomer component b2.

6 . The adhesive composition of claim 5 , wherein the monomer component b3 comprises:

i. a hydroxy-containing acrylic ester monomer having a hydroxyl group and an ethylenically unsaturated group,

ii. a nitrogen-containing monomer having a primary, secondary or a tertiary amino group or an N, N-dialkylaminoalkyl (meth)acrylate and a ethylenically unsaturated group,

iii. a vinyl monomer, or

iv. a combination thereof.

7 . A method of forming an adhesive composition, wherein the method comprises

providing a pre-adhesive mixture comprising:

a pre-adhesive (meth)acrylic based polymeric component A, wherein the pre-adhesive (meth)acrylic based polymeric component A is fully polymerized;

a pre-adhesive (meth)acrylic based polymeric component B at a content of at least about 73 wt. % for a total weight of the pre-adhesive mixture, wherein the pre-adhesive (meth)acrylic based polymeric component B is unpolymerized; and

a pre-adhesive tackifier component;

mixing the pre-adhesive mixture; and

polymerizing the pre-adhesive mixture to form the adhesive composition,

wherein the (meth)acrylic based polymeric component A has a weight average molecular weight of at least about 30,000 g/mol and not greater than about 200,000 g/mol,

wherein the (meth)acrylic based polymeric component B has a weight average molecular weight of at least about 100,000 g/mol, and

wherein an overall level of acidic monomers in the adhesive composition is not greater than about 0% by weight of the adhesive composition, wherein the pre-adhesive mixture comprises:

at least about 2 wt. % and not greater than 47 wt. % of a pre-adhesive (meth)acrylic based polymeric component A for a total weight of the pre-adhesive mixture;

and

at least about 0.1 wt. % and not greater than about 30 wt. % of a tackifier component for a total weight of the pre-adhesive mixture,

wherein the pre-adhesive (meth)acrylic based polymeric component A comprises a reaction product of polymerizable material comprising:

at least about 40 wt. % and not greater than about 99 wt. % of a pre-adhesive monomer component a1 for a total weight of the pre-adhesive (meth)acrylic based polymeric component A, wherein the pre-adhesive monomer component a1 is an ethylenically unsaturated monomer, and

at least about 0.1 wt. % and not greater than about 20 wt. % of a pre-adhesive monomer component a2 for a totally weight of the pre-adhesive (meth)acrylic based polymeric component A,

wherein the pre-adhesive (meth)acrylic based polymeric component B is acid-free and comprises a reaction product of polymerizable material comprising:

at least about 40 wt. % and not greater than about 99 wt. % of a pre-adhesive monomer component b1 for a total weight of the pre-adhesive (meth)acrylic based polymeric component B, wherein the pre-adhesive monomer component b1 is a C1-C24 acrylic ester, and

at least about 1 wt. % and not greater than about 60 wt. % of a pre-adhesive monomer component b2 for a totally weight of the pre-adhesive (meth)acrylic based polymeric component B, wherein the pre-adhesive monomer component b2 is an ethylenically unsaturated functional monomer selected from the group consisting of hydroxyl containing (meth)acrylic monomer and a nitrogen-containing monomer having a primary, secondary or tertiary amino group or an N,N-dialkylaminoalkyl (meth)acrylate, and

wherein the tackifier component comprises C5, C9, C5/C9, dicyclopentadiene, or their hydrogenated resins, or combinations thereof, and

wherein the monomer component a2 is N-hydroxyalkyl (meth) acrylamide.

8 . The method of claim 7 , wherein the pre-adhesive (meth)acrylic based polymeric component A has a glass transition temperature (Tg) of at least about 40° C.

9 . The method of claim 7 , wherein the pre-adhesive (meth)acrylic based polymeric component B has a glass transition temperature (Tg) of not greater than about 20° C.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 23, 2020
From: CUI, YUBO; ADAMS, THOMAS L.; ELLIOTT, DAVID A.; GORDON, JAMES N.
To: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
Reel/Frame 052195/0503 →
Continuity (2)
Provisional Application 62786025 · Dec 28, 2018
Related Publication 20200208025A1 · Jul 2, 2020
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