GB1534258A - Process for the production of elastomeric polyurethane-polyurea moulded products having a compact surface skin - Google Patents

Process for the production of elastomeric polyurethane-polyurea moulded products having a compact surface skin

Info

Publication number
GB1534258A
GB1534258A GB2066377A GB2066377A GB1534258A GB 1534258 A GB1534258 A GB 1534258A GB 2066377 A GB2066377 A GB 2066377A GB 2066377 A GB2066377 A GB 2066377A GB 1534258 A GB1534258 A GB 1534258A
Authority
GB
United Kingdom
Prior art keywords
groups
elastomeric polyurethane
polyurea
component
production
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
GB2066377A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB1534258A publication Critical patent/GB1534258A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225—Polyamines
    • C08G18/3237—Polyamines aromatic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/6505—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6523—Compounds of group C08G18/3225 or C08G18/3271 or polyamines of C08G18/38
    • C08G18/6529—Compounds of group C08G18/3225 or polyamines of C08G18/38
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2120/00—Compositions for reaction injection moulding processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

1534258 Elastomeric polyurethane polyurea mouldings BAYER AG 17 May 1977 [21 May 1976] 20663/77 Heading C3R [Also in Division B5] A process for the production of an elastomeric polyurethane-polyurea moulded product having a compact surface skin comprises reacting as a one-shot system by the reaction injection moulding technique: (a) an organic polyisocyanate; (b) a compound having a molecular weight of from 1800 to 12,000 and containing at least two primary hydroxyl groups; (c) an aromatic di- or higher-polyamine whose reactivity towards isocyanates has not been reduced by electron attracting substituents, which may be substituted by one or more alkyl groups in one or more ortho-positions to one or more amino groups; (d) a catalyst for the NCO/OH reaction; and optionally (e) a blowing agent and/or conventional additive(s). Component (c) may additionally comprises up to 50% wt. based on the amine component, of a divalent aliphatic alcohol having two primary hydroxyl groups, preferably ethylene glycol. Component (c) is preferably an aromatic diamine having at least one linear alkyl substituent in the orthoposition to one amino group and two linear C 1 -C 3 alkyl substituents in the ortho-positions to the other amino group, e.g. 1-methyl-3,5- diethyl-2,4-diaminobenzene and/or 1-methyl- 3,5 - diethyl - 2,6 - diaminobenzene. Preferred components (b) are polyhydroxy polyalkylene polyethers, optionally modified with vinyl polymers. Other suitable components (b) are OH-containing polyesters, polythioethers, polyacetals, polycarbonates, polyamides and polyesteramides. Preferred catalysts (d) are organotin compounds, e.g. tin II salts of carboxylic acids or dialkyltin salts of carboxylic acids either alone or preferably as a complex with amidines. Preferred polyisocyanates (a) are those based on 4,4<SP>1</SP> - diisocyanatodiphenylmethane which are liquid at room temperature and which may contain urethane groups or carbodiimide and/or uretoneimine groups. The resultant moulded article generally has a density of from 0À8 to 1À2 g./c.c. Uses:-Flexible car bumpers and car body elements.
GB2066377A 1976-05-21 1977-05-17 Process for the production of elastomeric polyurethane-polyurea moulded products having a compact surface skin Expired GB1534258A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762622951 DE2622951B2 (en) 1976-05-21 1976-05-21 Process for the production of elastic shaped bodies

Publications (1)

Publication Number Publication Date
GB1534258A true GB1534258A (en) 1978-11-29

Family

ID=5978732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2066377A Expired GB1534258A (en) 1976-05-21 1977-05-17 Process for the production of elastomeric polyurethane-polyurea moulded products having a compact surface skin

Country Status (9)

Country Link
JP (1) JPS52142797A (en)
BE (1) BE854855A (en)
BR (1) BR7703229A (en)
DE (1) DE2622951B2 (en)
ES (1) ES458968A1 (en)
FR (1) FR2352010A1 (en)
GB (1) GB1534258A (en)
IT (1) IT1078147B (en)
SE (1) SE437377B (en)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269945A (en) 1980-01-24 1981-05-26 The Dow Chemical Company Reaction injection molded polyurethanes employing aliphatic amine chain extenders
US4296212A (en) 1980-08-27 1981-10-20 The Upjohn Company Elastomeric polyurethane-polyurea polymer prepared from an organic polyisocyanate a polyol and an aromatic diamine having at least one of the ortho positions to each amine lower alkyl
US4298701A (en) * 1979-04-24 1981-11-03 Bayer Aktiengesellschaft Process for the production of elastic shaped articles
US4309378A (en) 1979-08-16 1982-01-05 Bayer Aktiengesellschaft Process for the production of pneumatic tires having particularly high dynamic strength
EP0044481A1 (en) * 1980-07-21 1982-01-27 Mobay Chemical Corporation Process for the production of elastomeric moulded products
US4314962A (en) 1980-12-29 1982-02-09 Ethyl Corporation Phenol extended polyurethanes prepared by RIM process
US4324867A (en) 1980-10-06 1982-04-13 Basf Wyandotte Corporation Process for the preparation of molded polyurethane-polyurea elastomers and molded parts prepared thereby
GB2131737A (en) * 1982-10-21 1984-06-27 Macchi International Spa Shaped bodies and method for their production
US4459399A (en) * 1981-09-18 1984-07-10 Ethyl Corporation Polyurethanes and process therefor
US4469653A (en) * 1981-07-04 1984-09-04 Basf Aktiengesellschaft Process for the preparation of molded parts of polyurethane or polyurethane-polyurea employing monocyclic amidines
US4477644A (en) * 1983-08-08 1984-10-16 The Dow Chemical Company Reaction injection molded polyurethanes employing thiapolycyclic polyahls as chain extenders
US4526905A (en) * 1982-07-06 1985-07-02 Ethyl Corporation Polyurethanes from dialkyl diaminobenzenes and processes therefor
US4530941A (en) * 1983-01-26 1985-07-23 The Dow Chemical Company Reaction injection molded polyurethanes employing high molecular weight polyols
US4576998A (en) * 1984-12-07 1986-03-18 The Dow Chemical Company Vinyl urethane composite polymer containing vinyl terminated urethane oligomers
US4642320A (en) * 1983-11-02 1987-02-10 The Dow Chemical Company Reaction injection molded polyureas employing high molecular weight amine-terminated polyethers
EP0219709A2 (en) * 1985-09-25 1987-04-29 The Dow Chemical Company Polymethylene polyphenylamine modified diamine chain extenders and polyurea elastomers therefrom
US4876019A (en) * 1983-02-16 1989-10-24 The Dow Chemical Company Internal mold release compositions
US4929697A (en) * 1987-08-07 1990-05-29 Mobay Corporation Use of ester group containing polyols in a rim process
US4937366A (en) * 1989-02-13 1990-06-26 Mobay Corporation Process and compositions for production of moldings
US4963640A (en) * 1989-02-13 1990-10-16 Mobay Corporation Process and compositions for production of moldings
US5003027A (en) * 1987-08-07 1991-03-26 Mobay Corporation Ester group containing polyols in a RIM process
US5008033A (en) * 1983-02-16 1991-04-16 The Dow Chemical Company Internal mold release compositions
US5011647A (en) * 1983-02-16 1991-04-30 The Dow Chemical Company Internal mold release compositions
US6866804B2 (en) * 1997-01-23 2005-03-15 Sunstar Suisse Sa Two-pack urethane foam composition, and two-pack urethane foam composition injecting apparatus and method
EP1717256A1 (en) * 2005-04-28 2006-11-02 Bayer MaterialScience AG Reaction injection moulding process for the production of a polyurethane skin layer
US9353210B2 (en) 2012-09-04 2016-05-31 Covestro Deutschland Ag Silane functional binder with thiourethane structure
US9458282B2 (en) 2009-01-22 2016-10-04 Covestro Deutchland Ag Polyurethane sealing compounds
US10294198B2 (en) 2014-04-11 2019-05-21 Covestro Deutschland Ag Method for producing xylylene diisocyanates in the gaseous phase
US11795266B2 (en) 2019-05-27 2023-10-24 Covestro Intellectual Property Gmbh & Co. Kg Method for preparing a mixed silane-terminated polymer

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1123167A (en) * 1978-04-11 1982-05-11 Steven M. Conover Process for the production of elastomeric moldings
DE2837501A1 (en) * 1978-08-28 1980-03-20 Basf Ag TRANSPARENT, ELASTIC POLYURETHANE UREA ELASTOMERS
JPS5558215A (en) * 1978-10-24 1980-04-30 Asahi Glass Co Ltd Urethane elastomer composition for reaction injection molding
DE2940738A1 (en) * 1979-10-08 1981-04-16 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING CELL-CONTAINING POLYURETHANE-POLYHANE MOLDED BODIES, WHEREAS POSSIBLE
JPS5767624A (en) * 1980-10-14 1982-04-24 Ihara Chem Ind Co Ltd Preparation of polyurthane elastomer
DE3147736A1 (en) * 1981-12-02 1983-06-09 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING ELASTIC MOLDED BODIES
DE3203490A1 (en) * 1982-02-03 1983-08-11 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING COVERS
DE3242559A1 (en) * 1982-11-18 1984-05-24 Basf Ag, 6700 Ludwigshafen METHOD FOR THE PRODUCTION OF CELL-MADE POLYURETHANE-POLYHANE MOLDED BODIES, WHEREAS POSSIBLE
US4442235A (en) * 1983-05-09 1984-04-10 Mobay Chemical Corporation Process and composition for the production of polyurethane elastomer moldings
US4519432A (en) * 1984-02-08 1985-05-28 Lim International S.A. Reinforced polyurethane tires
DE3407931A1 (en) * 1984-03-03 1985-09-05 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING MOLDED BODIES BASED ON POLYURETHANES HAVING UREA GROUPS
DE3413938C2 (en) * 1984-04-13 1994-07-07 Basf Ag Process for the preparation of reinforcing agent-containing compact or cellular polyurethane, polyurea or polyurethane-polyurea moldings
DE3433979A1 (en) * 1984-09-15 1986-03-27 Bayer Ag, 5090 Leverkusen USE OF STERICALLY HIDDEN AROMATIC DIAMINES IN THE PRODUCTION OF POLYURETHANE FOAMS
JPS62101623A (en) * 1984-10-25 1987-05-12 ザ　ダウ　ケミカル　コンパニ− Manufacture of high bending elastic modulus elastomer
DE3636604A1 (en) * 1986-10-28 1988-05-05 Bayer Ag METHOD FOR PRODUCING POLYURETHANE MOLDED BODIES
DE3802427A1 (en) * 1987-10-06 1989-08-03 Bayer Ag METHOD FOR PRODUCING MOLDED BODIES OR FILMS
DE3827595A1 (en) * 1988-08-13 1990-02-22 Bayer Ag METHOD FOR PRODUCING URETHANE GROUPS OF POLYROCURATE ELASTOMERS
US5538679A (en) * 1988-11-29 1996-07-23 Bayer Aktiengesellschaft Process of making molded products
JPH02296815A (en) * 1989-05-11 1990-12-07 Sumitomo Bayer Urethane Kk Production of integral-skin polyurethane molding
DE4431963A1 (en) 1994-09-08 1996-03-14 Bayer Ag Process for the preparation of elastic moldings
DE4442379A1 (en) 1994-11-29 1996-05-30 Bayer Ag Process for the glycolytic degradation of polyurethane plastics
DE10160375B4 (en) * 2001-12-10 2012-12-13 Basf Se Polyurethanes and their use as exterior body parts
DE10247789A1 (en) * 2002-10-14 2004-04-22 Bayer Ag A cellular amine crosslinked polyurethane elastomer containing polyisocyanate, polyol, chain extender, catalyst, and quaternary ammonium salt and propellant useful for the production of shoe parts shoe, including show soles
DE10359075B3 (en) 2003-12-17 2005-06-02 Bayer Materialscience Ag Production of a polyurethane integral foam with compressed edge zone and cellular core involves reacting a polyisocyanate and an inorganic zeolite with a polyol composition
CN101440207B (en) 2007-09-19 2012-08-08 住化拜耳氨酯株式会社 Integral skin molded article, method of preparing an integral skin molded article and laminate having integral skin made of polyurethane using the reaction injection molding process
DE102008035947B4 (en) 2008-07-31 2015-03-26 Kraussmaffei Technologies Gmbh Process for the preparation of a product from reactive starting materials
DE102008036995A1 (en) 2008-08-07 2010-02-11 Bayer Materialscience Ag Plastic moldings made of polyurethane and their use
DE102009005711A1 (en) 2009-01-22 2010-07-29 Bayer Materialscience Ag Polyurethanvergussmassen
DE102010031681A1 (en) 2010-07-20 2012-01-26 Bayer Materialscience Ag Polyurethanes with low volume shrinkage
DE102010031684A1 (en) 2010-07-20 2012-01-26 Bayer Materialscience Ag Polyurethanes with high refraction of light
DE102010031683A1 (en) 2010-07-20 2012-01-26 Bayer Materialscience Ag polyisocyanate
JP5627333B2 (en) * 2010-08-12 2014-11-19 住化バイエルウレタン株式会社 Polyurethane composition for integral skin foam
WO2012126934A1 (en) 2011-03-24 2012-09-27 Bayer Materialscience Ag Moulded parts consisting of reinforced polyurethane urea elastomers and use thereof
JP5358635B2 (en) * 2011-09-06 2013-12-04 株式会社日立製作所 Polyurethane decomposition liquid and method for forming polyurethane decomposition liquid
TWI577709B (en) 2012-04-23 2017-04-11 拜耳材料科學公司 Light resistant polyurethane composition
WO2014016325A1 (en) 2012-07-27 2014-01-30 Bayer Materialscience Ag Adhesive formulations
EP2890690B1 (en) 2012-08-28 2016-04-27 Covestro Deutschland AG Binder with cyclic carbonate structures
EP3099697B1 (en) 2014-01-31 2017-09-13 Covestro Deutschland AG Silane-modified formamides
WO2016174027A1 (en) 2015-04-28 2016-11-03 Covestro Deutschland Ag Polyurethane coverings having reduced water absorption and use thereof
EP3501642A1 (en) 2017-12-22 2019-06-26 Covestro Deutschland AG Method for the preparation of mixed silane terminated polymers
EP3763792A1 (en) 2019-07-11 2021-01-13 Covestro Deutschland AG Method for the production of isocyanurates from uretdiones
CN114080409A (en) 2019-07-11 2022-02-22 科思创知识产权两合公司 Process for preparing compounds containing allophanate and/or thioallophanate groups
EP3892659A1 (en) 2020-04-08 2021-10-13 Covestro Deutschland AG Low viscosity isocyanate prepolymers blocked with phenols obtainable from cashew nut shell oil, method for their preparation and their use
EP3916032A1 (en) 2020-05-29 2021-12-01 Covestro Deutschland AG Compositions containing uretdione groups crosslinking at low temperatures
EP4029892A1 (en) 2021-01-13 2022-07-20 Covestro Deutschland AG Compositions containing uretdione groups
EP4265663A1 (en) 2022-04-21 2023-10-25 Covestro Deutschland AG Polyaspartate-based two-component coating compositions for the production of coatings having improved self-heating properties and low adhesion

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FR92371E (en) * 1966-11-23
FR92377E (en) * 1966-12-26 1968-10-31 Kuhlmann Ets Polyurethane-polyurea composition resulting in a single stage in a cellular product and a compact elastomer
US3591532A (en) * 1966-12-27 1971-07-06 Upjohn Co High density cellular polyurethane elastomer
JPS5038680A (en) * 1973-08-08 1975-04-10

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4298701A (en) * 1979-04-24 1981-11-03 Bayer Aktiengesellschaft Process for the production of elastic shaped articles
US4309378A (en) 1979-08-16 1982-01-05 Bayer Aktiengesellschaft Process for the production of pneumatic tires having particularly high dynamic strength
US4269945A (en) 1980-01-24 1981-05-26 The Dow Chemical Company Reaction injection molded polyurethanes employing aliphatic amine chain extenders
US4379105A (en) 1980-07-21 1983-04-05 Mobay Chemical Corporation Process for the production of elastic shaped articles
EP0044481A1 (en) * 1980-07-21 1982-01-27 Mobay Chemical Corporation Process for the production of elastomeric moulded products
DE3133859A1 (en) * 1980-08-27 1982-04-29 The Upjohn Co., 49001 Kalamazoo, Mich. ELASTOMERAL POLYURETHANE POLYURANE POLYMERISATES AND MOLDINGS MADE THEREOF
US4296212A (en) 1980-08-27 1981-10-20 The Upjohn Company Elastomeric polyurethane-polyurea polymer prepared from an organic polyisocyanate a polyol and an aromatic diamine having at least one of the ortho positions to each amine lower alkyl
US4324867A (en) 1980-10-06 1982-04-13 Basf Wyandotte Corporation Process for the preparation of molded polyurethane-polyurea elastomers and molded parts prepared thereby
US4314962A (en) 1980-12-29 1982-02-09 Ethyl Corporation Phenol extended polyurethanes prepared by RIM process
US4469653A (en) * 1981-07-04 1984-09-04 Basf Aktiengesellschaft Process for the preparation of molded parts of polyurethane or polyurethane-polyurea employing monocyclic amidines
US4459399A (en) * 1981-09-18 1984-07-10 Ethyl Corporation Polyurethanes and process therefor
US4526905A (en) * 1982-07-06 1985-07-02 Ethyl Corporation Polyurethanes from dialkyl diaminobenzenes and processes therefor
GB2131737A (en) * 1982-10-21 1984-06-27 Macchi International Spa Shaped bodies and method for their production
US4530941A (en) * 1983-01-26 1985-07-23 The Dow Chemical Company Reaction injection molded polyurethanes employing high molecular weight polyols
US5011647A (en) * 1983-02-16 1991-04-30 The Dow Chemical Company Internal mold release compositions
US4876019A (en) * 1983-02-16 1989-10-24 The Dow Chemical Company Internal mold release compositions
US5008033A (en) * 1983-02-16 1991-04-16 The Dow Chemical Company Internal mold release compositions
US4477644A (en) * 1983-08-08 1984-10-16 The Dow Chemical Company Reaction injection molded polyurethanes employing thiapolycyclic polyahls as chain extenders
US4642320A (en) * 1983-11-02 1987-02-10 The Dow Chemical Company Reaction injection molded polyureas employing high molecular weight amine-terminated polyethers
US4576998A (en) * 1984-12-07 1986-03-18 The Dow Chemical Company Vinyl urethane composite polymer containing vinyl terminated urethane oligomers
EP0219709A3 (en) * 1985-09-25 1988-02-03 The Dow Chemical Company Polymethylene polyphenylamine modified diamine chain extenders and polyurea elastomers therefrom
US4667009A (en) * 1985-09-25 1987-05-19 The Dow Chemical Company Polymethylene polyphenylamine modified diamine chain extenders in polyurea elastomers
EP0219709A2 (en) * 1985-09-25 1987-04-29 The Dow Chemical Company Polymethylene polyphenylamine modified diamine chain extenders and polyurea elastomers therefrom
US4929697A (en) * 1987-08-07 1990-05-29 Mobay Corporation Use of ester group containing polyols in a rim process
US5003027A (en) * 1987-08-07 1991-03-26 Mobay Corporation Ester group containing polyols in a RIM process
US4937366A (en) * 1989-02-13 1990-06-26 Mobay Corporation Process and compositions for production of moldings
US4963640A (en) * 1989-02-13 1990-10-16 Mobay Corporation Process and compositions for production of moldings
US6866804B2 (en) * 1997-01-23 2005-03-15 Sunstar Suisse Sa Two-pack urethane foam composition, and two-pack urethane foam composition injecting apparatus and method
US7459107B2 (en) 1997-01-23 2008-12-02 Sunstar Suisse Sa Two-pack urethane foam composition, and two-pack urethane foam composition injecting apparatus and method
EP1717256A1 (en) * 2005-04-28 2006-11-02 Bayer MaterialScience AG Reaction injection moulding process for the production of a polyurethane skin layer
US7572404B2 (en) 2005-04-28 2009-08-11 Bayer Materialscience Ag Vehicle interior article of skin-integrated laminate, method for manufacturing non-foaming polyurethane resin and method for manufacturing skin-integrated laminate using the same
US9458282B2 (en) 2009-01-22 2016-10-04 Covestro Deutchland Ag Polyurethane sealing compounds
US9353210B2 (en) 2012-09-04 2016-05-31 Covestro Deutschland Ag Silane functional binder with thiourethane structure
US10294198B2 (en) 2014-04-11 2019-05-21 Covestro Deutschland Ag Method for producing xylylene diisocyanates in the gaseous phase
US11795266B2 (en) 2019-05-27 2023-10-24 Covestro Intellectual Property Gmbh & Co. Kg Method for preparing a mixed silane-terminated polymer

Also Published As

Publication number Publication date
DE2622951C3 (en) 1989-08-31
JPS5417359B2 (en) 1979-06-29
ES458968A1 (en) 1978-02-16
BR7703229A (en) 1978-06-06
DE2622951A1 (en) 1977-11-24
SE437377B (en) 1985-02-25
FR2352010A1 (en) 1977-12-16
IT1078147B (en) 1985-05-08
BE854855A (en) 1977-11-21
JPS52142797A (en) 1977-11-28
SE7705810L (en) 1977-11-22
FR2352010B1 (en) 1984-04-13
DE2622951B2 (en) 1979-09-06

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Legal Events

Date Code Title Description
PS Patent sealed
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SPA Amended specification published
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960517