公开(公告)号：DE2433052A1

公开(公告)日：1976-01-29

申请号：DE2433052

申请日：1974-07-10

Applicant: BASF AG

Inventor： SCHMITT WERNER ,  UNTERSTENHOEFER LEO DR ,  BERBNER HEINZ ING GRAD ,  IMMEL WOLFGANG DIPL ING DR

IPC: C09J123/22 ,  C09J195/00 ,  C09J3/14 ,  C09J3/30

公开(公告)号：AT282780B

公开(公告)日：1970-07-10

申请号：AT57567

申请日：1967-01-19

Applicant: BASF AG

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

IPC: C08L25/06 ,  C08L95/00 ,  C09J123/08 ,  C09J131/00 ,  C09J131/02 ,  C09J133/06 ,  C09J195/00 ,  C09J3/30

公开(公告)号：AT256475B

公开(公告)日：1967-08-25

申请号：AT61263

申请日：1963-01-25

Applicant: BASF AG

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

IPC: B29C44/34 ,  C08J9/35

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.

公开(公告)号：DE2426188A1

公开(公告)日：1975-12-18

申请号：DE2426188

申请日：1974-05-29

Applicant: BASF AG

Inventor： KRAUSE HANS-JOACHIM DIPL CHEM ,  SANDER BRUNO DIPL CHEM DR ,  GEELHAAR HANS JOACHIM DIPL CHE ,  UNTERSTENHOEFER LEO DR ,  FLOHR JOACHIM DIPL ING ,  KOSSMANN HERIBERT ING GRAD

IPC: C09D7/00 ,  C09D133/06 ,  C09D7/12

Abstract: Aq coating and covering media contain short fibres having a high degree of fibrillation, from water-, alkali- and acid-insoluble thermoplastics. They are useful as paints, resin-bonded plasters, adhesives, paper coating compsns., putties and cements. Thickening activity of most water-repellent polymer fibrils can reach, in aq. systems, that of many water-soluble thickners. Films obtd. are waterproof. Polymers may be esp. 2-8 C -olefin polymers, polymethyl methacrylate and polyvinyl halides.

公开(公告)号：AT267580B

公开(公告)日：1969-01-10

申请号：AT932866

申请日：1966-10-05

Applicant: BASF AG

Inventor： RAICHLE LUDWIG ING ,  WERMINGHAUSEN BERNHARD DR ,  UNTERSTENHOEFER LEO DR

IPC: E01C13/06 ,  E01C13/08 ,  E01C15/00

公开(公告)号：CH446417A

公开(公告)日：1967-11-15

申请号：CH1414366

申请日：1966-09-30

Applicant: BASF AG

Inventor： LUDWIG RAICHLE ,  WERMINGHAUSEN BERNHARD DR ,  UNTERSTENHOEFER LEO DR

IPC: E01C13/06 ,  E01C13/08 ,  E01C15/00 ,  E01C13/00

公开(公告)号：AT247900B

公开(公告)日：1966-06-27

申请号：AT731564

申请日：1964-08-24

Applicant: BASF AG

Inventor： TRIESCHMANN HANS GEORG DR ,  UNTERSTENHOEFER LEO DR

IPC: C08L9/00 ,  C08L23/02 ,  C08L95/00 ,  E01C11/22

公开(公告)号：CH405685A

公开(公告)日：1966-01-15

申请号：CH1271763

申请日：1963-10-16

Applicant: BASF AG

Inventor： LUDWIG RAICHLE ,  UNTERSTENHOEFER LEO DR ,  WILHELM KRIEGER

IPC: B29C44/34 ,  B29D27/00

公开(公告)号：CH398070A

公开(公告)日：1965-08-31

申请号：CH36263

申请日：1963-01-11

Applicant: BASF AG

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

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

公开(公告)号：DE2509739A1

公开(公告)日：1976-09-23

申请号：DE2509739

申请日：1975-03-06

Applicant: BASF AG

Inventor： ENGLER PETER DIPL ING DR ,  OPPENLAENDER KNUT DIPL CHEM DR ,  UNTERSTENHOEFER LEO DR ,  SCHARPENBERG HANS-GEORG DIPL C

IPC: D21H5/20

Abstract: Aqueous dispersions contg. polyolefine fibrids alone or in admixt. with cellulose fibres are prepd. by use as dispersing agent of a cyclic acetal or ketal of formula Where R' = Me satd. or olefinically unsatd. 2-30C alkyl or aryl, R2 = H or similar to R', R3 = (a)alkyl or (b) R4 = H, CH2OH or (b) and x = 10-50, y = 0-50. Used for prepn. of sheet materials, e.g. papers or felts having water-resistant properties. Surfactants previously used for prepn. of fibrid dispersions caused severe foaming both during dispersion prepn. and subsequent sheet making, necessitating the addn. of antifoam agents in amts. sufficient to adversely affect the H2O-resistance of the final sheet. Use of the new dispersants prevents the occurrence of foaming at both stages of the process.