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Your search keyword '"Polypropylene -- Research"' showing total 19 results
Start Over Descriptor "Polypropylene -- Research" Topic chemicals, plastics and rubber industries
19 results on '"Polypropylene -- Research"'

1. Qualitative and quantitative analysis of solid state free induction decay ((super 1)H NMR) curves using a combination of the methods of Gardner and Prony: isotactic polypropylene as a case study

Author

Schreurs, S., Francois, J.-P., Adriaensens, P., and Gelan, J.

Subjects
Polypropylene -- Research, Solid state chemistry -- Research, Polymers -- Research, Nuclear magnetic resonance spectroscopy -- Research, Chemicals, plastics and rubber industries
Abstract

The analysis of free induction decay curves of an isotactic polypropylene film obtained at different temperatures is presented. A combination of the methods of Gardner and Prony was used for the quantitative and qualitative analysis of induction decay curves that were recorded at 40, 60, 80, and 100 degrees Celsius at constant time intervals. These multicomponent decay curves provided information about the physicochemical structure of the polymer sample. Results allowed each component to be characterized by a specific model function based on spin-spin relaxation.

Published
1999

2. Interfacial tension measurements of polypropylene - polyethylene systems

Author

Rao, Nikhil, Wanke, S.E., and Sundararaj, U.

Subjects
Polypropylene -- Research, Polyethylene -- Research, Polymers -- Research, Business, Business, international, Chemicals, plastics and rubber industries
Abstract

The effect of the polyethylene structure on the interfacial tension for polyethylene-polypropylene blends is the focus of this article. Mechanical properties of polymer systems can be tailored for specific applications [...]

Published
1998

3. The discovery of olefin metathesis

Author

Eleuterio, Herb

Subjects
Crystalline polymers -- Research, Polymerization -- Research, Olefins -- Research, Polypropylene -- Research, Chemicals, plastics and rubber industries, Chemistry
Published
1991

5. Radically induced hydrosilylation of polypropylene through reactive extrusion

Author

Shearer, Gifford and Tzoganakis, Costas

Subjects
Polypropylene -- Research, Metals -- Manufacture, Polymers -- Research, Business, Business, international, Chemicals, plastics and rubber industries
Abstract

Hydrosilylation of terminal double bonds in polypropylene, which were formed by peroxide induced degradation, was investigated via a non-catalytic method in the melt-phase. Polymer modification has gained considerable attention as [...]

Published
1998

6. Anhydrous polyproline helices and globules

Author

Counterman, Anne E. and Clemmer, David E.

Subjects
Molecular dynamics -- Research, Ions -- Research, Polypropylene -- Properties, Polypropylene -- Research, Chemicals, plastics and rubber industries
Abstract

Ion mobility/time-of-flight measurements and molecular modeling simulations are employed to investigate the gas-phase conformations of a series of polyproline ions that are obtained by electrospraying aqueous and propanol solutions. Molecular dynamics simulations are used to explore the structures of the ions.

Published
2004

7. The effects of crystallisation in polypropylene film casting

Author

Christie, Andrew W. and Gregory, Robert B.

Subjects
Polypropylene -- Research, Plastic films -- Research, Crystallization -- Research, Business, Chemicals, plastics and rubber industries, Engineering and manufacturing industries
Published
1994

9. New PP copolymers & TPO's herald '90s 'engineering' polyolefins

Author

Naitove, Matthew H.

Subjects
Quantum Chemical Corp. USI Div. -- Research, Polyolefins -- Forecasts and trends, Thermoplastics -- Research, Polypropylene -- Research, Plastics industry -- Forecasts and trends, Business, Chemicals, plastics and rubber industries
Abstract

New PP Copolymers & TPO's Herald '90s 'Engineering' Polyolefins 'The 1970s and '80s were the era of benzene-based engineering thermoplastics. The '90s will be the era of olefinic engineering plastics.' [...]

Published
1990

10. 'Welding' Metallocene Polyolefins

Author

WOOD, ANDREW

Subjects
ExxonMobil Chemical Co. -- Research, University of Minnesota -- Research, Pesticides industry -- Research, Polyethylene -- Research, Herbicides -- Research, Polypropylene -- Research, Plastics industry -- Research, Chemical industry -- Research, Chemical bonds -- Research, Chemicals -- Research, Business, Chemicals, plastics and rubber industries, Research
Abstract

RESEARCHERS FROM THE UNIVERSITY OF MINNESOTA, TWIN CITIES (UM; Minneapolis-St. Paul) and ExxonMobil Chemical have shown that metallocene-catalyzed semicrystalline polyethylene (PE) and polypropylene (PP) can be 'welded' together to form [...]

Published
2000

11. It works for PE, so why not PP?

Author

Corneliussen, Roger

Subjects
Polypropylene -- Research, Business, Chemicals, plastics and rubber industries, Chemistry
Abstract

U.S. Patent 8,075,830 (Dec. 13, 2011), 'Polypropylene Blown Film,' Rodolfo Mier, Mark Miller, and Raleigh McBride (Fina Technology, Houston, Texas, USA). High-clarity, high-gloss polypropylene films can be produced by cast-film, [...]

Published
2012

12. The global market for BOPP films. (Special Studies)

Author

Blanco, Alice

Subjects
Applied Market Information -- Research, Polypropylene -- Research, Plastics industry -- Research, Business, Chemicals, plastics and rubber industries, Chemistry
Abstract

Applied Market Information Ltd., AMI House, 45-47 Stokes Croft, Bristol BS1 3QP, United Kingdom; Phone: +44 (0) 117 924 9442; Fax +44 (0) 117 989 2128; www.amiplastics.com; e-mail: info@amiplastics.com; 198 [...]

Published
2002

13. Elastomeric polypropylene: oscillating catalyst controls microstructure

Author

Baum, Rudy

Subjects
Polypropylene -- Research, Polymerization -- Research, Microstructure -- Research, Chemicals, plastics and rubber industries, Engineering and manufacturing industries
Abstract

Stanford University chemists Robert M. Waymouth and Geoffrey W. Coates have successfully controlled the microstructure of polypropylene through the use of an oscillating catalyst. The catalyst, which is the first example of a promising and inexpensive approach to making block polymers, promotes two types of propylene polymerization. The product known as elastomeric polypropylene also has big commercial potential.

Published
1995

14. Solid-state 'rolltrusion' gives polymer thin films

Author

Haggin, Joseph

Subjects
Plastic films, Polypropylene -- Research, Thin films, Extrusion process -- Innovations, Chemicals, plastics and rubber industries, Engineering and manufacturing industries
Published
1991

15. Basell sharpens its polyolefins R&D focus. (CW Interview)

Author

Vries, Anton De

Subjects
BASELL C.V. -- Science and technology policy, Pesticides industry -- Science and technology policy -- Research, Polypropylene -- Research, Herbicides -- Science and technology policy -- Research, Chemical industry -- Science and technology policy -- Research, Business, Chemicals, plastics and rubber industries, Research, Science and technology policy
Abstract

Basell is sharpening its polyolefins R&D efforts, boosting investment in certain technologies and dropping those that are less promising, including its Hivalloy graft copolymer. The company recently commercialized Spherizone, a [...]

Published
2002

16. Modified PP makes sheet easier to thermoform

Author

Lodge, Charles

Subjects
Rohm and Haas Co. -- Research, Polypropylene -- Research, Acrylic resins -- Usage, Thermoforming -- Innovations, Polymer industry -- Research, Business, Chemicals, plastics and rubber industries
Abstract

Rohm and Haas, Co of Philadelphia has developed a new acrylic modifier that improves the thermoforming properties of polypropylene (PP) sheets. The acrylic mofifier enhances the PP's physical properties without altering the material's impact strength by acting as a nucleator. Acrylic-modified PP sheets have lower and more uniform melt pressure and increased strectchability. They also minimize the overall cost of the thermoformed part.

Published
1992

17. BP develops PP route from PE technology

Author

Chynoweth, Emma

Subjects
BP Chemicals Ltd. -- Research, Pesticides industry -- Research, Polypropylene -- Research, Herbicides -- Research, Chemical industry -- Research, Business, Chemicals, plastics and rubber industries, Research
Abstract

BP Chemicals (London) has carried out pilot tests to produce polypropylene (PP) using its gas-phase, fluid-bed polyethylene (PE) technology. Trials have been carried out on a pilot plant at Lavera, [...]

Published
1992

18. DSM develops modified polypropylene

Subjects
Polypropylene -- Research, Petroleum chemicals industry -- Research, Business, Business, international, Chemicals, plastics and rubber industries
Published
1983

19. Discoverers of polypropylene share prize

Author

Stinson, Stephen

Subjects
Polypropylene -- Research, Chemists -- Achievements and awards, Chemicals, plastics and rubber industries, Engineering and manufacturing industries
Published
1987

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