Process for producing vinyl chloride polymer with low residual monomer

Process for producing vinyl chloride polymer with low residual monomer

F O C U S O N market. Vinyl Chloride (Malaysia) will supply feedstock. In Sep 2002, PVC capacity is to be raised 20,000 tonne/y by Mitsui Vina Plast...

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F O C U S

O N

market. Vinyl Chloride (Malaysia) will supply feedstock. In Sep 2002, PVC capacity is to be raised 20,000 tonne/y by Mitsui Vina Plastics and Chemicals when it debottlenecks its 80,000 tonne/y facility. Asian Chemical News, 12 Aug 2002, 8 (368), 31

PATENTS Two-layer enclosure for electrical assemblies

EVENTS

The patent concerns cellular phones, laptop computers and other small electronic devices requiring a small power supply. A housing for the power supply is made of two layers. The

P O LY V I N Y L C H L O R I D E

inner layer is made of PBT thermoplastic and the second layer is an overmoulding of 1 mm PVC. The PVC serves to seal the inner shell and to relieve any strain in the cable leading to the electronics inside. This type of construction saves on materials and costs of assembly.

foam. Applications envisaged include automotive ones.

US Patent 6,454,604. 24 Sep 2002. Inventors: Currie, G et al. Astec International Ltd, Kwun Tong, Hong Kong

The monomer is polymerised in aqueous suspension, forming a slurry of polymer in water. The surplus monomer is stripped off with steam and the polymer dried. The patent stipulates reaction conditions such that less steam is needed and productivity increased.

Double-sided self-adhesive reinforced foam tape A double sided self-adhesive foam tape is described. The structure includes a layer of flexible foam preferably made of closed cell PVC

US Patent 6,451,398. 17 Sep 2002. Inventor: Sylvester, Michael S. No assignee given

Process for producing vinyl chloride polymer with low residual monomer

US Patent 6,448,372. 10 Sep 2002. Inventors: Kobayashi, T et al, Shin-Etsu Chemical Co, Tokyo, Japan

14 November 2002

Winning and Retaining Medical Business University of Warwick, Coventry, UK Tel: +44 (0)20 7505 8564. Fax: +44 (0)20 7505 8566 E-mail: [email protected]

10-11 November 2003

Current Trends in PVC Technology Loughborough University, UK Contact: Jackie Baseley Tel: +44 (0) 1509 223340. Fax: +44 (0) 1509 223949 E-mail: [email protected]

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