GB1498614A - Process for the manufacture of foamed gypsum - Google Patents

Process for the manufacture of foamed gypsum

Info

Publication number
GB1498614A
GB1498614A GB42521/76A GB4252176A GB1498614A GB 1498614 A GB1498614 A GB 1498614A GB 42521/76 A GB42521/76 A GB 42521/76A GB 4252176 A GB4252176 A GB 4252176A GB 1498614 A GB1498614 A GB 1498614A
Authority
GB
United Kingdom
Prior art keywords
gypsum
weight
foam
foaming
weight based
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB42521/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of GB1498614A publication Critical patent/GB1498614A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/20—Retarders
    • C04B2103/22—Set retarders
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)

Abstract

1498614 Polyurethane-gypsum foam HOECHST AG 13 Oct 1976 [15 Oct 1975] 42521/76 Heading C3R A process for the manufacture of foamed gypsum and constructional elements composed thereof comprises mixing gypsum with water in the presence of additives for liquefying the gypsum, regulating the foaming time and regulating the setting time of the foam; dispersing in this mixture from 1 to 30% by weight based on the weight of the gypsum of one or more polyurethane prepolymers prepared by reacting excess polyisocyanate with one or more polyesters and/or polyethers containing -OH groups; pouring the dispersion into a mould and allowing it to foam and to set after foaming has terminated to form a constructional member, e.g. a ceiling or wall board. Suitable liquefying additives are melamine resins, e.g. sulphonic acid modified melamine resins which may be used in amounts of from 0À1 to 3% by weight based on the weight of gypsum and a suitable additive for regulating the setting time, i.e. for preventing the gypsum hardening before the completion of foaming, is carboxymethyl cellulose used in an amount of from 0À1 to 2% by weight based on the weight of gypsum. To allow time for mixing and filling the dispersion into a mould the foaming reaction may be delayed, e.g. by 5 minutes, by using an additive consisting of a catalyst, e.g. dibutyl tin laurate absorbed on zeolite powder to diminish the activity of the catalyst. This additive may be used in amounts of from 0À1 to 2% by weight based on the weight of the prepolymer. Additional additives for example silicon surfactants as foam stabilizers and volatile fluorocarbons as blowing agents may be used in the process. Sandwich constructional members may be produced by allowing the prepolymer/gypsum dispersion, which may additionally contain a bonding agent, e.g. a redispersible polyvinyl alcohol, to foam between cover sheets, e.g. of hard board or chip board to which the foamed gypsum adheres.
GB42521/76A 1975-10-15 1976-10-13 Process for the manufacture of foamed gypsum Expired GB1498614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE752546181A DE2546181B2 (en) 1975-10-15 1975-10-15 Process for the production of gypsum foam and structural elements made therefrom

Publications (1)

Publication Number Publication Date
GB1498614A true GB1498614A (en) 1978-01-25

Family

ID=5959214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42521/76A Expired GB1498614A (en) 1975-10-15 1976-10-13 Process for the manufacture of foamed gypsum

Country Status (12)

Country Link
AT (1) AT367383B (en)
BE (1) BE847356A (en)
DE (1) DE2546181B2 (en)
DK (1) DK463876A (en)
ES (1) ES452294A1 (en)
FI (1) FI762921A (en)
FR (1) FR2327973A1 (en)
GB (1) GB1498614A (en)
IT (1) IT1070437B (en)
NL (1) NL7611161A (en)
NO (1) NO143699C (en)
SE (2) SE412753B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188937A (en) * 1986-04-08 1987-10-14 Shimizu Construction Co Ltd Method of stopping leakage of water in a concrete structure and impregnating agent for use in said method
ES2381726A1 (en) * 2010-08-03 2012-05-31 Universidad De Burgos Procedure to obtain lighted plaster with foamed polyurethane residues (Machine-translation by Google Translate, not legally binding)
CN113233854A (en) * 2021-05-24 2021-08-10 昆明理工大学 Preparation method of CaSO 4-based solid waste environment-friendly filling material

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2940785A1 (en) * 1979-10-08 1981-04-16 Hoechst Ag, 6000 Frankfurt FOAM PLASTER, METHOD FOR THE PRODUCTION THEREOF, ITS USE AND COMPONENT THEREOF
DE3135865A1 (en) * 1981-09-10 1983-03-24 Rigips GmbH, 3452 Bodenwerder Plasterboard panel
FR2526416A1 (en) * 1982-05-07 1983-11-10 Weber Sa A METHOD FOR MAKING DAMS FOR FLAT OR ALLOY-DRAFTED MINES, DEVICE FOR CARRYING OUT SAID METHOD, AND MIXTURE USED
DE3909083C1 (en) * 1989-03-20 1990-06-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muench
DE4039319A1 (en) * 1990-12-10 1992-06-11 Sicowa Verfahrenstech METHOD FOR PRODUCING PLASTER BUILDING MATERIALS
DE10260974A1 (en) † 2002-12-24 2004-07-15 Fischerwerke Artur Fischer Gmbh & Co. Kg Foamable multi-, preferably two-component, reaction mortar useful for the anchoring of elements in holes comprises at least one gas-forming organic additive in one or more of the components

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1192864A (en) * 1968-05-13 1970-05-20 Ici Ltd New Cement Compositions
DE1805126C3 (en) * 1968-10-25 1975-05-28 H. & E. Boergardts Kg, 3425 Walkenried Mass for the production of working forms for the ceramic industry
US3778290A (en) * 1970-03-18 1973-12-11 Ici Ltd Decorative flooring surfaces
US3878278A (en) * 1971-10-21 1975-04-15 Charles H Miller Lightweight reinforced structural material
JPS4849842A (en) * 1971-10-26 1973-07-13

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188937A (en) * 1986-04-08 1987-10-14 Shimizu Construction Co Ltd Method of stopping leakage of water in a concrete structure and impregnating agent for use in said method
GB2188937B (en) * 1986-04-08 1990-01-10 Shimizu Construction Co Ltd Method of stopping leakage of water in a concrete structure
ES2381726A1 (en) * 2010-08-03 2012-05-31 Universidad De Burgos Procedure to obtain lighted plaster with foamed polyurethane residues (Machine-translation by Google Translate, not legally binding)
CN113233854A (en) * 2021-05-24 2021-08-10 昆明理工大学 Preparation method of CaSO 4-based solid waste environment-friendly filling material

Also Published As

Publication number Publication date
FI762921A (en) 1977-04-16
SE7903977L (en) 1979-05-07
IT1070437B (en) 1985-03-29
NL7611161A (en) 1977-04-19
ATA759376A (en) 1981-11-15
SE412753B (en) 1980-03-17
DK463876A (en) 1977-04-16
DE2546181A1 (en) 1977-04-28
FR2327973A1 (en) 1977-05-13
SE7611506L (en) 1977-04-16
AT367383B (en) 1982-06-25
BE847356A (en) 1977-04-15
NO143699C (en) 1981-04-01
ES452294A1 (en) 1979-07-16
DE2546181B2 (en) 1979-03-08
NO143699B (en) 1980-12-22
NO763503L (en) 1977-04-18

Similar Documents

Publication Publication Date Title
GB1421894A (en) Inorganic-organic synthetic resins
ATE35973T1 (en) PROCESS FOR MANUFACTURING FOAM GLASS MOLDED BODIES.
ES2000915A6 (en) Methods of preparing rigid polyurethane foams, and precursor compositions therefor.
GB1498614A (en) Process for the manufacture of foamed gypsum
GB1209243A (en) Shaped polyurethane foams
ES485651A1 (en) Intumescent flame-resistant materials, method for their preparation and their use.
GB1472759A (en) Process for the production of polyurethane foams
GB1429595A (en) Proces for the production of hydrophilic elastic polyurethane foams
EP0074064A3 (en) Method for manufacturing phenolic resin foam
GB770631A (en) Foams of very low specific gravity derived from polyesters, polyisocyanates and water
GB928325A (en) Process for making vinyl chloride polymer cellular materials
GB1289186A (en)
GB1468630A (en) Process for the preparation of flexible polyurethane foams
JPS52152999A (en) Preparation of modified urethane foam
JPS6416864A (en) Ant-controlling polyurethane foam
GB1407244A (en) Polyurethane foams
JPS5250397A (en) Process for producing flame-retarded polyurethane foams
JPS5217598A (en) Process for producing flame-resisting polyurethane foams
JPS57195721A (en) Production of polyurethane foam with rigid skin
JPS5339397A (en) Preparation of new flame retardant polyurethane foam
ES375436A1 (en) Method of producing moulded articles
JPS5614535A (en) Production of rigid polyurethane foam
FR2009512A1 (en) Epoxide resin foam of improved dimensional stability at
JPS54102363A (en) Preparation of foamed vinyl chloride resin
JPS5363497A (en) Production of rigid polyurethane foam

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee