Propylene copolymers for adhesive applications
First Claim
1. An in-reactor produced multi-component copolymer comprising a semi-crystalline component having a crystallinity of 20% or more, and an amorphous component having a crystallinity of 5% or less, wherein the copolymer comprises at least 80 wt % of units derived from propylene and from about 1 to about 20 wt % of units derived from at least one C6 to C12 alpha-olefin, and wherein the copolymer has a viscosity at 190°
- C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g.
0 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein is an in-reactor produced multi-component copolymer comprises a semi-crystalline component having a crystallinity of 20% or more, and an amorphous component having a crystallinity of 5% or less. The copolymer comprises at least 80 wt % of units derived from propylene and from about 1 to about 20 wt % of units derived from at least one C6 to C12 alpha-olefin. The copolymer has a viscosity at 190° C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g. An adhesive containing the copolymer exhibits a good balance of adhesive properties and mechanical strength.
-
Citations
36 Claims
-
1. An in-reactor produced multi-component copolymer comprising a semi-crystalline component having a crystallinity of 20% or more, and an amorphous component having a crystallinity of 5% or less, wherein the copolymer comprises at least 80 wt % of units derived from propylene and from about 1 to about 20 wt % of units derived from at least one C6 to C12 alpha-olefin, and wherein the copolymer has a viscosity at 190°
- C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
15. A process for producing a multi-component copolymer comprising at least 80 wt % of units derived from propylene and up to 20 wt % of units derived from at least one C6 to C12 alpha-olefin, the process comprising:
-
(a) polymerizing propylene and one or more C6 to C12 alpha-olefins in a first reaction zone in the presence of a first catalyst system to produce a first polymer product, wherein the first catalyst system comprises a first polymerization catalyst capable of producing a semi-crystalline poly-alpha-olefin having a crystallinity of 20% or more, and a second polymerization catalyst capable of producing an amorphous poly-alpha-olefin having a crystallinity of 5% or less; and (b) contacting the first polymer product under polymerization conditions with a second catalyst system in a second reaction zone separate from the first reaction zone. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
-
23. A process for preparing a copolymer comprising at least 80 wt % of units derived from propylene and up to 20 wt % of units derived from at least one C6 to C12 alpha-olefin, the process comprising:
-
(a) polymerizing propylene and one or more C6 to C12 alpha-olefins in a first reaction zone in the presence of a first catalyst system capable of producing a semi-crystalline copolymer having a crystallinity of 20% or more; and (b) contacting the semi-crystalline copolymer product with propylene in a second reaction zone separate from the first reaction zone and in the presence of a second catalyst system to produce said copolymer, the second catalyst system comprising a first polymerization catalyst capable of producing a crystalline poly-alpha-olefin having a crystallinity of 20% or more, and a second polymerization catalyst capable of producing an amorphous poly-alpha-olefin having a crystallinity of 5% or less. - View Dependent Claims (24, 25, 26, 27)
-
-
28. A process for preparing a copolymer comprising at least 80 wt % of units derived from propylene and up to 20 wt % of units derived from at least one C6 to C12 alpha-olefin, the process comprising:
-
(a) polymerizing propylene in a first reaction zone in the presence of a first catalyst system to produce a first polymer product; and (b) contacting the first polymer product with propylene and one or more C6 to C12 alpha-olefins in a second reaction zone separate from the first reaction zone and in the presence of a second catalyst system to produce said copolymer, the second catalyst system comprising a first polymerization catalyst capable of producing a crystalline poly-alpha-olefin having a crystallinity of 20% or more, and a second polymerization catalyst capable of producing an amorphous poly-alpha-olefin having a crystallinity of 5% or less. - View Dependent Claims (29, 30, 31, 32, 33)
-
-
34. An adhesive composition comprising an in-reactor produced multi-component copolymer comprising a semi-crystalline component having a crystallinity of 20% or more, and an amorphous component having a crystallinity of 5% or less, wherein the copolymer comprises at least 80 wt % of units derived from propylene and from about 1 to about 20 wt % of units derived from at least one C6 to C12 alpha-olefin, wherein the copolymer has a viscosity at 190°
- C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g, and wherein the adhesive composition has the following properties;
(a) at least 50% fiber tear at −
18°
C. used Inland paper board as a substrate;(b) at least 50% fiber tear at 20°
C. used Inland paper board as a substrate;(c) a viscosity of less than 1,200 mPa sec at 190°
C.;(d) a set time of less than 3 seconds; and (g) a toughness of 3.4 megajoule/m or more.
- C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g, and wherein the adhesive composition has the following properties;
-
35. An adhesive composition comprising an in-reactor produced multi-component copolymer comprising a semi-crystalline component having a crystallinity of 20% or more, and an amorphous component having a crystallinity of 5% or less, wherein the copolymer comprises at least 80 wt % of units derived from propylene and from about 1 to about 20 wt % of units derived from at least one C6 to C12 alpha-olefin, wherein the copolymer has a viscosity at 190°
- C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g, and wherein the adhesive composition has the following properties;
(a) a viscosity of less than 25,000 mPa sec at 190°
C.;(b) a Dot T-Peel adhesion of 10 Newton or more for adhesion between a fiber board and a fabric substrate; (c) a set time of 10 seconds or less; (d) an open time of 3 seconds or longer; (i) a toughness of 7 megajoule/m3 or more, preferably 14 megajoule/m3 or more; and (j) an elongation of 400% or more.
- C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g, and wherein the adhesive composition has the following properties;
-
36. An adhesive, composition comprising an in-reactor produced multi-component copolymer comprising a semi-crystalline component having a crystallinity of 20% or more, and an amorphous component having a crystallinity of 5% or less, wherein the copolymer comprises at least 80 wt % of units derived from propylene and from about 1 to about 20 wt % of units derived from at least one C6 to C12 alpha-olefin, wherein the copolymer has a viscosity at 190°
- C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g, and wherein the adhesive composition has the following properties;
(a) a viscosity of 25,000 mPa sec. or less sec at 190°
C.;(b) a Dot T-Peel adhesion of 10 Newton or more for adhesion between two polyethylene terephthalate films at room temperature (25°
C.);(c) a Dot T-Peel adhesion of 10 Newton or more for adhesion between two polyethylene terephthalate films at 40°
C.;(d) a toughness of 7 megajoule/m3 or more, preferably 14 megajoule/m3 or more; and (g) an elongation of 400% or more.
- C. of at least 530 mPa sec and a heat of fusion between about 10 and about 70 J/g, and wherein the adhesive composition has the following properties;
Specification