公开(公告)号：DE1932588A1

公开(公告)日：1971-01-07

申请号：DE1932588

申请日：1969-06-27

Applicant: BASF AG

Inventor： HANS-GEORG TRIESCHMANN PROF DR ,  LEO UNTERSTENHOEFER DR-ING ,  BERBNER HEINZ

IPC: C08L23/02 ,  C08L95/00 ,  C08F45/52

Abstract: Moulded articles, lining and sealing sheets and carpet backings are made from compositions of (a) 100 parts weight bitumen of 1-150 penetration (DIN 1 995) as deacidified petroleum distillation residue containing (1) 20-40% aromatic, (2) 16-25% naphthenic bituminous hydrocarbons, (3) 27-45% Ca naphthenates and sulphonates, (4) 11-20% Ca(OH)2 and CaSO4 and (5) 0.5-5% S(1 to 5 = 100%); (b) 25-200 parts weight ethylene or propylene homopolymer or copolymer of (b1) 30-97% ethylene and (b2) 3-70% vinyl ester of 2-3C alkanecarboxylic acid and/or 1-4C alkyl ester of 3-4C alkanecarboxylic acid (b1 + b2 = 100) and optionally (c) usual additives.

公开(公告)号：DE1479972A1

公开(公告)日：1969-03-27

申请号：DE1479972

申请日：1962-01-26

Applicant: BASF AG

Inventor： FRITZ STASTNY DR ,  LEO UNTERSTENHOEFER DR-ING ,  FRITZ GRAF DR ,  HANS-JUERGEN LOEFFLER DR-ING

IPC: B29C44/34 ,  C08J9/35 ,  B29D27/00

Abstract: An expanded resinous material consists of porous thermoplastic particles the interstices between the particles being filled with a foamed cured synthetic resin. Spherical porous particles of less than 10 mm. diameter may be prepared by incorporating a volatile liquid within particles of polyvinyl chloride, polyethylene, poly(methyl methacrylate), polyurethanes, polyethers, polystyrene or styrene copolymers with butadiene or acrylonitrile and heating the particles above the boiling-point of the liquid. Specified hardenable foamed synthetic resins are urea/formaldehyde, phenol/formaldehyde, melamine/formaldehyde, or polyurethane resins. These may include a surface-active agent and a curing agent. In preparing the material the particles should be tightly packed and the foam added to it. Fillers, e.g. granulated cork, asbestos or fibre waste may also be added. The material may be prepared batchwise by placing particles in a mould with closed side walls and a perforated upper closure, which allows air to pass through but prevents escape of the particles, and introducing the foam at an inlet in the lower part of the mould. The material may then be set in the mould or conveyed elsewhere. In a continuous process particles fed into chamber 2 from hopper 1 are carried by screw 3 to inlet 4 where the foam enters. More plastic may be introduced at a second inlet (not shown) in pipe 5. The foam may be agitated or vibrated and a pressure difference may be used to convey it along the pipe to the site where it is to be solidified. The product may contain 5-95% of the porous resin particles and may be coated, e.g. with asbestos. It can be used to make shaped articles, e.g. structural units or heat insulation. In Examples 1 and 2 particles of expanded polystyrene are mixed with a foamed urea-formaldehyde resin in the apparatus shown. In (1) the particles are expanded with sodium diisopropyl-naphthalene sulphonate, phosphoric acid and air. In (2) oxalic acid was added to the resin. In (3) polyvinyl chloride particles were incorporated into a polyether prepared from pentaerythritol monoglycidyl ether, 4 : 41-diamino-3 : 31-dimethyl-dicyclohexylmethane and H2O2.