# US 8,784,990 B2 · Adhesive film composition for glass lamination

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- Number: US 8,784,990 B2
- Document ID: US8784990B2
- Status: Granted
- Kind: B2
- Application number: 13/267,282
- Filed: 2011-10-06
- Published: 2012-06-21
- Granted: 2014-07-22
- Earliest claimed: 2010-12-16
- Assignees: SK Innovation Co., Ltd.
- Applicants: JaeYoung Park; SeungGweon Hong; HyeLim Kim; KwangJin Chung; MyungAhn Ok
- Inventors: JaeYoung Park; SeungGweon Hong; HyeLim Kim; KwangJin Chung; MyungAhn Ok
- Web page: https://patentgrep.com/patent/US8784990B2

## CPC

- C09J 169/00: Adhesives based on polycarbonates; Adhesives based on derivatives of polycarbonates
- C08K 5/109: of carbonic acid {, e.g. R-O-C(=O)-O-R}
- C08K 5/11: of acyclic polycarboxylic acids
- C08K 5/29: Compounds containing {one or more} carbon-to-nitrogen double bonds
- Y10T 428/31507: Of polycarbonate
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Provided is a resin composition based on polyalkylene carbonate for use as an adhesive film composition for glass lamination, and more particularly, to a resin composition in which a plasticizer and isocyanate are added to polypropylene carbonate or polyethylene carbonate as polyalkylene carbonate to introduce a urethane group. As such, the resin composition of the present invention can improve an adhesive strength by addition of isocyanate, and secure flexibility by using the plasticizer. In particular, an adhesive sheet based on polyalkylene carbonate can decompose a polymer laminate layer through simple heat treatment to fully collect glass when defects of glass lamination are generated, thereby reducing the loss of glass due to process failure, be stable to moisture so that transport, storage, and use thereof are not limited, and perform lamination even at a lower process temperature.

## Claims

### Claim 1

An adhesive film composition for glass lamination, comprising:
a polyalkylene carbonate resin;
a plasticizer; and
an isocyanate compound,
wherein the polyalkylene carbonate resin has a weight average molecular weight of 50,000 to 300,000 g/mol, and is selected from polypropylene carbonate and polyethylene carbonate, and
wherein the plasticizer is low-molecular weight polypropylene carbonate or polyethylene carbonate having a weight average molecular weight of 300 to 5000 g/mol, or is selected from a compound represented by Chemical Formulas 1 and 2:
wherein in Chemical Formula 1, R represents a hydrogen atom; linear C1-C18 alkyl; and carbonyl substituted with linear C1-C18 alkyl or C6-C18 alkylcyclohexyl;
wherein in Chemical Formula 2, n represents an integer of 0 to 4, and m represents an integer of 1 to 5.

### Claim 2 (depends on 1)

The adhesive film composition for glass lamination of claim 1, wherein the plasticizer is used in a content of 2 to 40 parts by weight based on 100 parts by weight of the polyalkylene carbonate resin.

### Claim 3 (depends on 1)

The adhesive film composition for glass lamination of claim 1, wherein the isocyanate compound is one or more selected from the group consisting of 2,4-toluene diisocyanate (TDI), 4.4′-diphenyl methane diisocyanate (MDI), xylene diisocyanate (XDI), methaxylene diisocyanate (MXDI, 1,6-hexamethylene diisocyanate (HDI), iso phoron diisocyanate (IPDI), 4,4′-methylene bis(cyclohexyl isocyanate) which is hydrogenated MDI (H12MDI), methyl cyclohexane 2,4(2,6) diisocyanate which is hydrogenated TDI (HTDI), and 1,3-(isocyanate methyl)cyclo-hexane which is hydrogenated XDI (H6XDI).

### Claim 4

A laminate of an adhesive film composition laminated on glass at a temperature of 100 to 160° C. comprising:
a polyalkylene carbonate resin;
a plasticizer; and
an isocyanate compound,
wherein the polyalkylene carbonate resin has a weight average molecular weight of 50,000 to 300,000 g/mol, and is selected from polypropylene carbonate and polyethylene carbonate, and
wherein the plasticizer is low-molecular weight polypropylene carbonate or polyethylene carbonate having a weight average molecular weight of 300 to 5000 g/mol, or is selected from a compound represented by Chemical Formulas 1 and 2:
wherein in Chemical Formula 1, R represents a hydrogen atom; linear C1-C18 alkyl; and carbonyl substituted with linear C1-C18 alkyl or C6-C18 alkylcyclohexyl;
wherein in Chemical Formula 2, n represents an integer of 0 to 4, and m represents an integer of 1 to 5.