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US 9,000,091 B2Granted
Preparation of polyolefin-based adhesives
AssigneeEquistar Chemicals, LP
InventorsChun D. Lee, Maged G. Botros, Charles S. Holland
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Abstract
Disclosed is a method for preparing polyolefin-based adhesives. In the method, a maleated polyolefin is blended, in sequence, with a polyolefin elastomer and then with a linear low density polyethylene. The polyolefin-based adhesive made according to the method of the invention shows improved clarity and adhesion in multilayer polyolefin films.
Claims9
A process for producing a polyolefin-based adhesive comprising:
- (a) blending a maleated polyolefin with a polyolefin elastomer to form a maleated polyolefin/polyolefin elastomer composition;
- and
- (b) blending the maleated polyolefin/polyolefin elastomer composition with a linear low density polyethylene to form the polyolefin-based adhesive,
- wherein the polyolefin-based adhesive comprises:
- (i) 2 to 30 wt. %, based upon the total weight of the polyolefin-based adhesive, of the maleated polyolefin;
- (ii) 1 to 30 wt. %, based upon the total weight of the polyolefin-based adhesive, of the polyolefin elastomer;
- and
- (iii) 40 to 97 wt. %, based upon the total weight of the polyolefin-based adhesive, of the linear low density polyethylene, wherein the linear low density polyethylene has a shear modifiable network.
5 more elements
An extrusion process for preparing a polyolefin-based adhesive comprising:
- (a) grafting maleic anhydride onto a polyethylene to produce a maleated polyethylene;
- (b) blending the maleated polyethylene with a polyolefin elastomer to form a maleated polyethylene/polyolefin elastomer blend;
- and
- (c) blending a linear low density polyethylene with the maleated polyethylene/polyolefin elastomer blend to form the polyolefin-based adhesive,
- wherein the polyolefin-based adhesive comprises:
- (i) 2 to 30 wt. %, based upon the total weight of the polyolefin-based adhesive, of the maleated polyethylene;
- (ii) 1 to 30 wt. %, based upon the total weight of the polyolefin-based adhesive, of the polyolefin elastomer;
- and
- (iii) 40 to 97 wt. %, based upon the total weight of the polyolefin-based adhesive, of the linear low density polyethylene, wherein the linear low density polyethylene has a shear modifiable network.
6 more elements
Dependencies are inferred from the claim text.