Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1997-05-28
1999-09-07
Mulcahy, Peter D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524396, 524127, 524321, 524451, 524582, C08J 515
Patent
active
059488395
ABSTRACT:
Polypropylene impact copolymer compositions are provided which contain a homopolymer phase of predominantly homopolymeric polypropylene, a copolymer phase of copolymerized ethylene and propylene, and a nucleating agent. The inventive compositions have a rubber content (Fc) in the range of 25 to 45% by weight, a crystallization temperature in the range of 122 to 132.degree. C., a melt flow in the range of about 7 to about 60 dg/min, and a ratio of the intrinsic viscosity of the copolymer phase to the intrinsic viscosity of the homopolymer phase of 1.4 to about 1.9. The polypropylene impact copolymer compositions may be used to form cast films which preferably are soft, quiet, and suitable for use in products to be used next to the skin, such as diapers, adult incontinence pads and feminine hygiene products.
REFERENCES:
patent: Re31213 (1983-04-01), Brachman
patent: 3466257 (1969-09-01), Coulson
patent: 3517086 (1970-06-01), Shirayama et al.
patent: 3668281 (1972-06-01), Drake
patent: 4082716 (1978-04-01), Fielding et al.
patent: 4113806 (1978-09-01), Watson et al.
patent: 4433073 (1984-02-01), Sano et al.
patent: 4704421 (1987-11-01), Teskin
patent: 4769283 (1988-09-01), Sipinen et al.
patent: 4833195 (1989-05-01), Adur et al.
patent: 4902738 (1990-02-01), Mitsuno et al.
patent: 4904253 (1990-02-01), Sipinen et al.
patent: 4981938 (1991-01-01), Hanari et al.
patent: 4987173 (1991-01-01), Nomura et al.
patent: 5196246 (1993-03-01), Kauss et al.
patent: 5198301 (1993-03-01), Hager et al.
patent: 5250631 (1993-10-01), McCullough et al.
patent: 5314746 (1994-05-01), Johnson et al.
patent: 5362782 (1994-11-01), McCullough et al.
Doody P. A.
Mulcahy Peter D.
Union Carbide Chemicals & Plastics Technology Corporation
LandOfFree
Polymer compositions and cast films does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymer compositions and cast films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymer compositions and cast films will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1805105