- Email: [email protected]
SU1755558 Improved process for filled PVC cable compounds
Additives for Polymers
licensed to 46 producers worldwide, accounting for with a combined capacity of 83m tonnes/year. BP’s technology numbers 23 licensees, with a combined capacity of about 3.5m tonnes/year. A recent forecast by Chem Systems put global PE capacity at 38m tonnes (giving UC technology 21.8% and BP technology 9.2%). It went on to estimate that gas-phase plants account for 54% of total capacity, growing at S%/year. By 2005 it is forecast that more than 50% of LLDPE (growing at 7.2%.year) will be replaced by metallocenebased product in many applications. BP Chemicals, I Finsbury Circus, London
EC2M 7BA, UK; tel: +44-l 71496 4038; Dow Chemical Co, 2040 Dow Center, Midland MI 46874, USA; tel: +I-51 7 636 2303; fax: +I-517 638 9752; Exxon Chemical Europe Inc, Mechelsteenweg 363, B-1950 Kraainem, Belgium; +32-2- 769-3562; fmc: +32-2- 769-3446 Union Carbide Carp, 39 Old Ridgebury Road Danbury, CT 06817-0001, USA; tel: +I-203-794- 2533
Azo pigment rivals lightfastness of inorganics Claiming a level of heat-fastness found typically only in inorganics, a new high-strength azo yellow pigment has been introduced by Engelhard Corporation, under the designation Type 1296. It is said to rival the colour strength of diarylides, and is offered as an alternative to them, for use in polyolefins, styrenics and other plastics.
Contact: Engelhard Corp, Performance Minerals Group, IO1 Wood Ave S. CN 770, Iselin, NJ 08830-0770, USA; tel: +I-908 205 5000; fax: +I-908 205 67II
PATENTS JO8 109272
Light-scattering methacrylic plates Sumitomo Chemical Co Ltd Priority date: 7 October 1994 6
November 1996
Methacrylic resin plates dispersed with crosslinked polystyrene particles, contain 0.1-3.0 wt% at least of a stabiliser chosen from benzotriazoles, hindered amines, benzophenones and salicyclic esters, for use as covers of displays and illumination advertisement boards. EP688755 Alkoxylate as biodegradable low foam surfactant Hoechst AG Priority date: 21 June 1994 Mixed alkoxylation products prepared by reacting an organic compound with ethylene oxide and alkaline earth metal salt of alkyl succinic acid are especially useful as dispersants and wetting agents, and are easily biodegradable. JO7304855 Phenolic resin-based hardeners for epoxy resins Yuka Shell Epoxy KK Priority date: 13 May 1994 Epoxy resin hardeners containing 30-90 pts weight of phenolic resins of specified formulations of difunctional or trifunctional component and polyhydric phenol compounds have low melt viscosities, providing cured products with good heat and moisture resistance and low stress property. EP688803 Blocked isocyanate prepolymers Bayer AG Priority date: 22 June 1994 Isocyanate prepolymers based on aromatic diisocyanates. SU1755558 Improved process for filled PVC cable compounds Polymers Chemical Technical Research Institute, Vladimir Chemical Works Priority date: 27 December 1989 Suspension PVC is mixed with a mineral filler at a temperature increased from 3540°C to 50-6O”C, for 2-3 minutes. A suspension of stabilizer in plasticizer is added, continuing mixing at 80-129°C. The compounds
0 1996 Elsevier Science
November 1996
show reduced porosity and viscosity and increased thermal stability; they can be used for sheathing of cables, pipes, sheet and construction materials.
Flame retardants JO8 109287 A flame-retardant composition with increased light-fastness Tokuyama Soda KK Priority date: 7 October 1994 The composition contains polyolefins, tris (brominated neopentyl) phosphates, antimony oxide and N-methyl substituted hindered amine compounds. It can be used as a flame-resistant material, also having high light-fastness. JO8109320 Flame retardant polyester based on a graft copolymer Polyplastics KK Priority date: 13 October 1994 The compound is produced by adding to a thermoplastic polyester base a graft copolymer of an ethylene unsaturated carboxylic acid alkyl ester copolymer segment and a vinyl copolymer segment with a halogencontaining organic flame retardant, and inorganic flame retardant treated with 0.5-5% weight of coupling agent and a fibrous filler. It has excellent abrasion resistance to metal and to other resins, without reducing the mechanical properties and flame-retardancy. JO8109291 Flame retardant resin for building components Mitsubishi Chemical Corp. Priority date: 7 October 1994 The compound contains a matrix resin of 30-50 wt.% of a polyethylene resin and 70-50 wt. % of an ethylene vinyl acetate copolymer, with aluminium trihydrate and a fatty acid. It can be used for building components and has high flame retardancy with good bending processability. A sandwich laminate between metal sheets (such as aluminium) is also flame-resistant.
81996 Elsevier Science
Additivesfor Polymers
(lhe information given in the above section has been supplied by Derwent Information Ltd, Derwent House, 24 Great Queen Street, London WC2B 5DF, UK; tel: +44-l 71 355 2800; fax: +44-l 71 344 2900. Extended summaries or fill copies of the patents listed can be obtainedfiom Derwent).
FINANCIAL NEWS Overcapacity hits ECC results Overcapacity and falling demand (from the paper industry) were given as reasons for a 46% drop in first-half 1996 profits by English China Clays (ECC), to 230.2 million, on reduced sales of 2430.4m (E454.8m). Chief executive Dennis Rediker said that the figures were “unsatisfactory”, but that ECC had been hit by factors outside its control. As well as declining output in the paper industry, there had been weak demand in the US market and pricing pressures on kaolin. Speciality chemicals (which include new additive products for the plastics industry) saw profits reduced from E6.6m to 21 .Om, due to contract losses, volatile material prices and severe competition on selling prices. Contact: ECC International plc, John Keay House, St. Austell, Cornwall PL25 4DJ, UK; tel: +44-1726 74482: fax: +44-1726 623019
GenCorp buys PS latex pigments from Morton GenCorp Specialty Polymers Division has acquired the polystyrene latex pigments business of Morton International, including the Lytrom brand name, technology, customer base and certain other assets. The pigments are used mainly in paper and paperboard coatings, to improve gloss, opacity, brightness and printability. Chairman and chief executive John Yasinsky said that the deal was a “first step in a continuing move to strengthen and broaden the emulsion polymer business, which GenCorp
7
licensed to 46 producers worldwide, accounting for with a combined capacity of 83m tonnes/year. BP’s technology numbers 23 licensees, with a combined capacity of about 3.5m tonnes/year. A recent forecast by Chem Systems put global PE capacity at 38m tonnes (giving UC technology 21.8% and BP technology 9.2%). It went on to estimate that gas-phase plants account for 54% of total capacity, growing at S%/year. By 2005 it is forecast that more than 50% of LLDPE (growing at 7.2%.year) will be replaced by metallocenebased product in many applications. BP Chemicals, I Finsbury Circus, London
EC2M 7BA, UK; tel: +44-l 71496 4038; Dow Chemical Co, 2040 Dow Center, Midland MI 46874, USA; tel: +I-51 7 636 2303; fax: +I-517 638 9752; Exxon Chemical Europe Inc, Mechelsteenweg 363, B-1950 Kraainem, Belgium; +32-2- 769-3562; fmc: +32-2- 769-3446 Union Carbide Carp, 39 Old Ridgebury Road Danbury, CT 06817-0001, USA; tel: +I-203-794- 2533
Azo pigment rivals lightfastness of inorganics Claiming a level of heat-fastness found typically only in inorganics, a new high-strength azo yellow pigment has been introduced by Engelhard Corporation, under the designation Type 1296. It is said to rival the colour strength of diarylides, and is offered as an alternative to them, for use in polyolefins, styrenics and other plastics.
Contact: Engelhard Corp, Performance Minerals Group, IO1 Wood Ave S. CN 770, Iselin, NJ 08830-0770, USA; tel: +I-908 205 5000; fax: +I-908 205 67II
PATENTS JO8 109272
Light-scattering methacrylic plates Sumitomo Chemical Co Ltd Priority date: 7 October 1994 6
November 1996
Methacrylic resin plates dispersed with crosslinked polystyrene particles, contain 0.1-3.0 wt% at least of a stabiliser chosen from benzotriazoles, hindered amines, benzophenones and salicyclic esters, for use as covers of displays and illumination advertisement boards. EP688755 Alkoxylate as biodegradable low foam surfactant Hoechst AG Priority date: 21 June 1994 Mixed alkoxylation products prepared by reacting an organic compound with ethylene oxide and alkaline earth metal salt of alkyl succinic acid are especially useful as dispersants and wetting agents, and are easily biodegradable. JO7304855 Phenolic resin-based hardeners for epoxy resins Yuka Shell Epoxy KK Priority date: 13 May 1994 Epoxy resin hardeners containing 30-90 pts weight of phenolic resins of specified formulations of difunctional or trifunctional component and polyhydric phenol compounds have low melt viscosities, providing cured products with good heat and moisture resistance and low stress property. EP688803 Blocked isocyanate prepolymers Bayer AG Priority date: 22 June 1994 Isocyanate prepolymers based on aromatic diisocyanates. SU1755558 Improved process for filled PVC cable compounds Polymers Chemical Technical Research Institute, Vladimir Chemical Works Priority date: 27 December 1989 Suspension PVC is mixed with a mineral filler at a temperature increased from 3540°C to 50-6O”C, for 2-3 minutes. A suspension of stabilizer in plasticizer is added, continuing mixing at 80-129°C. The compounds
0 1996 Elsevier Science
November 1996
show reduced porosity and viscosity and increased thermal stability; they can be used for sheathing of cables, pipes, sheet and construction materials.
Flame retardants JO8 109287 A flame-retardant composition with increased light-fastness Tokuyama Soda KK Priority date: 7 October 1994 The composition contains polyolefins, tris (brominated neopentyl) phosphates, antimony oxide and N-methyl substituted hindered amine compounds. It can be used as a flame-resistant material, also having high light-fastness. JO8109320 Flame retardant polyester based on a graft copolymer Polyplastics KK Priority date: 13 October 1994 The compound is produced by adding to a thermoplastic polyester base a graft copolymer of an ethylene unsaturated carboxylic acid alkyl ester copolymer segment and a vinyl copolymer segment with a halogencontaining organic flame retardant, and inorganic flame retardant treated with 0.5-5% weight of coupling agent and a fibrous filler. It has excellent abrasion resistance to metal and to other resins, without reducing the mechanical properties and flame-retardancy. JO8109291 Flame retardant resin for building components Mitsubishi Chemical Corp. Priority date: 7 October 1994 The compound contains a matrix resin of 30-50 wt.% of a polyethylene resin and 70-50 wt. % of an ethylene vinyl acetate copolymer, with aluminium trihydrate and a fatty acid. It can be used for building components and has high flame retardancy with good bending processability. A sandwich laminate between metal sheets (such as aluminium) is also flame-resistant.
81996 Elsevier Science
Additivesfor Polymers
(lhe information given in the above section has been supplied by Derwent Information Ltd, Derwent House, 24 Great Queen Street, London WC2B 5DF, UK; tel: +44-l 71 355 2800; fax: +44-l 71 344 2900. Extended summaries or fill copies of the patents listed can be obtainedfiom Derwent).
FINANCIAL NEWS Overcapacity hits ECC results Overcapacity and falling demand (from the paper industry) were given as reasons for a 46% drop in first-half 1996 profits by English China Clays (ECC), to 230.2 million, on reduced sales of 2430.4m (E454.8m). Chief executive Dennis Rediker said that the figures were “unsatisfactory”, but that ECC had been hit by factors outside its control. As well as declining output in the paper industry, there had been weak demand in the US market and pricing pressures on kaolin. Speciality chemicals (which include new additive products for the plastics industry) saw profits reduced from E6.6m to 21 .Om, due to contract losses, volatile material prices and severe competition on selling prices. Contact: ECC International plc, John Keay House, St. Austell, Cornwall PL25 4DJ, UK; tel: +44-1726 74482: fax: +44-1726 623019
GenCorp buys PS latex pigments from Morton GenCorp Specialty Polymers Division has acquired the polystyrene latex pigments business of Morton International, including the Lytrom brand name, technology, customer base and certain other assets. The pigments are used mainly in paper and paperboard coatings, to improve gloss, opacity, brightness and printability. Chairman and chief executive John Yasinsky said that the deal was a “first step in a continuing move to strengthen and broaden the emulsion polymer business, which GenCorp
7