GB1190446A - Improvements in Polyurethane Sealant Compositions - Google Patents

Improvements in Polyurethane Sealant Compositions

Info

Publication number
GB1190446A
GB1190446A GB2429467A GB2429467A GB1190446A GB 1190446 A GB1190446 A GB 1190446A GB 2429467 A GB2429467 A GB 2429467A GB 2429467 A GB2429467 A GB 2429467A GB 1190446 A GB1190446 A GB 1190446A
Authority
GB
United Kingdom
Prior art keywords
component
triol
polyether
diol
shore
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
GB2429467A
Inventor
John Young Lewis
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.)
Pfizer Ltd
Original Assignee
Pfizer Ltd
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 Pfizer Ltd filed Critical Pfizer Ltd
Priority to GB2429467A priority Critical patent/GB1190446A/en
Publication of GB1190446A publication Critical patent/GB1190446A/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
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • 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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • 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
    • C08G2190/00—Compositions for sealing or packing joints

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)

Abstract

1,190,446. Polyurethane sealants. PFIZER Ltd. 24 May, 1968 [25 May, 1967], No. 24294/67. Heading C3R. A two-component sealant composition comprises a first component consisting of the reaction product of a polyether triol with an excess of an aromatic diisocyanate to give an adduct having unreacted isocyanate groups but no free hydroxyl groups therein, and a second component comprising a polyether diol and/or triol, a filler and an organo-metallic catalyst for the isocyanate/hydroxyl group reaction, the overall NCO/OH ratio in the composition being from 0À92 :1 to 0À97 :1 and the equivalent weights of the triol used in forming the first component and of the diol and/or triol used in the second component being chosen so as to give without the filler a cured polyurethane elastomer having a Shore A hardness of from 2 to 5. The polyether triol used to form the 1st component preferably has a M.W. of at least 3000 and may be prepared by reacting ethylene oxide or propylene oxide with glycerol or trimethylolpropane. A commercial mixture of 2,4- and 2,6-tolylene diisocyanates is preferably reacted with the polyether triol. The polyether diol and/or triol used in the second component preferably has an equivalent weight of less than 1000 and may be a polyoxypropylene glycol, or a triol of the kind used in forming the first component and may contain a proportion of a low M.W. material, e.g. di- or tri-propylene glycol. Suitable fillers are pumice stone, tale and china clay. The preferred catalyst is dibutyl tin dilaurate. The hardness of the cured sealant composition is preferably from 20 to 35 (Shore A).
GB2429467A 1967-05-25 1967-05-25 Improvements in Polyurethane Sealant Compositions Expired GB1190446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2429467A GB1190446A (en) 1967-05-25 1967-05-25 Improvements in Polyurethane Sealant Compositions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2429467A GB1190446A (en) 1967-05-25 1967-05-25 Improvements in Polyurethane Sealant Compositions

Publications (1)

Publication Number Publication Date
GB1190446A true GB1190446A (en) 1970-05-06

Family

ID=10209417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2429467A Expired GB1190446A (en) 1967-05-25 1967-05-25 Improvements in Polyurethane Sealant Compositions

Country Status (1)

Country Link
GB (1) GB1190446A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2253194A1 (en) * 1971-11-03 1973-05-10 Dow Chemical Co SOLID, NON-ELASTOMERIC POLYURETHANE OBJECTS
EP0280981A1 (en) * 1987-03-02 1988-09-07 W.R. Grace & Co.-Conn. Abrasion-, heat-, and corrosion-resistant polyurethane system
EP0344773A2 (en) * 1988-06-02 1989-12-06 Takiron Co., Ltd. Liquid segment polyurethane gel and couplers for ultrasonic diagnostic probe comprising the same
CN115003720A (en) * 2020-02-03 2022-09-02 Sika技术股份公司 Polyurethane composition having good adhesion to plastics

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2253194A1 (en) * 1971-11-03 1973-05-10 Dow Chemical Co SOLID, NON-ELASTOMERIC POLYURETHANE OBJECTS
EP0280981A1 (en) * 1987-03-02 1988-09-07 W.R. Grace & Co.-Conn. Abrasion-, heat-, and corrosion-resistant polyurethane system
EP0344773A2 (en) * 1988-06-02 1989-12-06 Takiron Co., Ltd. Liquid segment polyurethane gel and couplers for ultrasonic diagnostic probe comprising the same
EP0344773A3 (en) * 1988-06-02 1990-07-25 Takiron Co., Ltd. Liquid segment polyurethane gel and couplers for ultrasonic diagnostic probe comprising the same
US5039774A (en) * 1988-06-02 1991-08-13 Takiron Co., Ltd. Liquid segment polyurethane gel and couplers for ultrasonic diagnostic probe comprising the same
CN115003720A (en) * 2020-02-03 2022-09-02 Sika技术股份公司 Polyurethane composition having good adhesion to plastics

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Legal Events

Date Code Title Description
PS Patent sealed
433D Application made for revocation (sect. 33/1949)
4333 Proceeding terminated by surrender of patent under section 34 patents act 1949
434I Order made revoking the undermentioned patent (sect. 34/1949)