Low- and high-molecular weight amorphous polyalphaolefin polymer

Details Low- and high-molecular weight amorphous polyalphaolefin polymer Low- and high-molecular weight amorphous polyalphaolefin polymer

1997-03-24

1998-03-03

Cain, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C08L 2300

Patent

active

057235465

ABSTRACT:
A polymer blend having an open time including a high molecular weight average, predominantly atactic flexible polyolefin polymer having a heat of fusion of about 15 to 60 J/g, and a low molecular weight average, atactic polyolefin polymer having a heat of fusion of about 0.1 to 20 J/g, wherein the high molecular weight polymer and low molecular weight polymer are sufficiently miscible to impart a single glass transition temperature to the polymer blend, and the low molecular weight polymer is present in an amount sufficient to impart a melt viscosity of greater than about 8,000 cPs at room temperature and a crystallinity below about 25 J/g to the polymer blend. The invention further includes methods for preparing such polymer blends, and the products produced from the polymer blends, which are useful for hot melt adhesives, asphalt and bitumen applications such as roofing membranes, polymeric modifiers and the like.

REFERENCES:
patent: 3112300 (1963-11-01), Natta et al.
patent: 3112301 (1963-11-01), Natta et al.
patent: 3963659 (1976-06-01), Binder et al.
patent: 4022728 (1977-05-01), Trotter et al.
patent: 4075290 (1978-02-01), Denzel et al.
patent: 4650830 (1987-03-01), Yonekura et al.
patent: 4960820 (1990-10-01), Hwo
patent: 5468807 (1995-11-01), Tsurutani et al.
patent: 5478891 (1995-12-01), Lakshmanan et al.
patent: 5512625 (1996-04-01), Butterbach et al.
patent: 5539056 (1996-07-01), Yang et al.
Business Research Report, "Hot Melt Adhesives B149", p. 1 (1989).
A. Sustic et al., "Novel Amorphous Polyalphaolefins (APAO) in Hot Melt Adhesive Formulations," TAPPI Notes, pp. 193-200 (1991).
A. Sustic, et al., "On-Purpose Amorphous Polyalphaolefins Used in Hot Melt Adhesives," J. Adh. Seal. Council, 20(2):41 (1991).
Collette, J.W., et al., "Elastomeric Polypropylenes from Alumina-Supported Tetralkyl Group IVB Catalysts," Macromolecules, 22:3851-58 (1989).

Affiliated with

Also associated with

Rating

Low- and high-molecular weight amorphous polyalphaolefin polymer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low- and high-molecular weight amorphous polyalphaolefin polymer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low- and high-molecular weight amorphous polyalphaolefin polymer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2248581