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    Water resistant polyvinyl acetate adhesive compositions
    2.
    发明授权
    Water resistant polyvinyl acetate adhesive compositions 失效

    公开(公告)号：US3444037A

    公开(公告)日：1969-05-13

    申请号：US3444037D

    申请日：1965-06-08

    Applicant: NAT STARCH CHEM CORP

    Inventor： ARMOUR WALTER B

    IPC: C08L61/10 ,  C08L61/14 ,  C09J131/04 ,  C09J161/14 ,  B32B27/04 ,  B32B27/06

    CPC classification number: C09J131/04 ,  C08L61/14 ,  C08L2666/04 ,  C08L2666/14 ,  C08L2666/54 ,  C09J161/14 ,  Y10T428/3188 ,  Y10T428/3196 ,  Y10T428/31967 ,  Y10T442/2221 ,  Y10T442/3667

    Abstract: 1,150,904. Laminates; plywood. NATIONAL STARCH & CHEMICAL CORP. 25 May, 1966 [8 June, 1965], No. 23488/66. Headings B5L and B5N. [Also in Division C3] Aqueous synthetic resin adhesive compositions are prepared by (a) sulphonating a #-stage phenolic resin to render an aqueous solution thereof compatible with aqueous vinyl acetate polymer emulsions, and (b) mixing such solution and emulsion in proportions providing 5 to 70% of sulphonated phenolic resin and 30 to 95% vinyl acetate polymer based on the weight of solids in the composition. The phenolic resin may be derived from an unsubstituted or a C 1-6 alkyl- or alkenyl-substituted phenol; the higher the molecular weight of the resin the higher will be the degree of sulphonation necessary, e.g. 1 to 5% sulphonation when the M.W. is 500 to 1000 and up to 30% when it is 1000 to 5000. The sulphonated resin solution may have a pH of 7À5 to 8À5. The vinyl acetate polymers may be homopolymers or copolymers containing up to 20% comonomer, e.g. alkyl acrylates or methacrylates; mono- or di-alkyl maleates, fumarates, itaconates or citraconate; crotonic, acrylic, methacrylic, maleic, itaconic or citraconic acid; vinyl or vinylidene chloride; acrylamide or N-methylol acrylamide. Polyvinyl alcohol is the preferred emulsifier for the polymer emulsion. An acidic metal salt curing agent, e.g. chromic nitrate or perchlorate or aluminium nitrate or chloride, may be added not more than 48 hours before use of the adhesive. Uses of the adhesives. Specified uses of the adhesives are the bonding, saturation or lamination of porous substrates, e.g. wood, tempered hardboard, textiles, leather, paper and cement asbestos board, and the manufacture of plywood and wood particle board. Special reference is made to the bonding of " finger joints" and the construction of laminated beams and arches. They may also be used to make prefabricated wall panels by binding skin materials such as metals, cardboard, plywood, glass and asbestos board to cores such as foamed plastics, honeycomb cores, insulation board and particle board. In examples, plywood is made from 3-plys of 1/16 inch birchwood.

    Chromic acetate-2, 4, 6-trimethylphenol reaction product as waterproofing additive for vinyl acetate polymers
    3.
    发明授权
    Chromic acetate-2, 4, 6-trimethylphenol reaction product as waterproofing additive for vinyl acetate polymers 失效
    醋酸乙酯-2,4,6-三甲基苯酚反应产物作为乙酸乙烯酯聚合物的防水添加剂

    公开(公告)号：US3300430A

    公开(公告)日：1967-01-24

    申请号：US36789664

    申请日：1964-05-15

    Applicant: NAT STARCH CHEM CORP

    Inventor： ARMOUR WALTER B ,  FASS RICHARD A

    IPC: C07F11/00 ,  C08K5/00 ,  C09J131/04

    CPC classification number: C08K5/0091 ,  C07F11/005 ,  C08L2666/34 ,  C09J131/04 ,  C08L31/04

    Abstract: The invention comprises reaction products of 2,4,6-trimethylolphenol and water-soluble chromic salts, which are obtainable by mixing aqueous solutions of the two reagents. The preferred chromic salt is chromic acetate, but reference is made also to the use of chromic bromide, chloride, nitrate, phosphate and sulphate. An example is given of the use of chromic acetate. The products are useful as waterproofing additives for vinyl resins (see Division C3).ALSO:As waterproofing additives for adhesives based on emulsions of vinyl polymers, use is made of reaction products of 2,4,6-trimethylolphenol with water-soluble chromic salts (see Division C2). The preferred chromic salt is chromic acetate, but chromic bromide, chloride, nitrate, phosphate or sulphate may also be used. The reaction product is preferably taken as such but may also be formed in situ by adding aqueous solutions of the two reagents to the adhesive composition. The invention is particularly applicable to adhesives comprising emulsions of vinyl acetate or of co-polymers of vinyl acetate with other ethylenically unsaturated monomers, a number of which are specified. A number of substrata to which the adhesives may be applied are also specified. Comparative experimental results are given.

    Water resistant polyvinyl acetate adhesive compositions
    4.
    发明授权
    Water resistant polyvinyl acetate adhesive compositions 失效
    耐水性聚乙烯乙酸酯粘合剂组合物

    公开(公告)号：US3433701A

    公开(公告)日：1969-03-18

    申请号：US3433701D

    申请日：1965-05-18

    Applicant: NAT STARCH CHEM CORP

    Inventor： ARMOUR WALTER B

    IPC: C08L29/04 ,  C08L31/04 ,  C08L61/04 ,  C08L61/10 ,  C09J131/04 ,  C09J151/00 ,  C09J161/06 ,  B32B27/04 ,  B32B27/06

    CPC classification number: C09J151/003 ,  C08L29/04 ,  C08L31/04 ,  C08L61/04 ,  C08L2666/04 ,  C08L2666/14 ,  C08L2666/28 ,  C09J131/04 ,  C09J161/06 ,  Y10T428/31627 ,  Y10T428/31649

    Abstract: 1,153,300. Adhesive coatings. NATIONAL STARCH & CHEMICAL CORP. 13 May, 1966 [18 May, 1965], No. 21488/66. Heading B2K. [Also in Divisions B5 and C3] A solid substrate coated with a dried adhesive film exhibiting optimum water resistance, said film having been deposited from an aqueous adhesive composition and made by (a) preparing an aqueous emulsion of vinyl acetate polymer or copolymer and stabilising the emulsion so as to render it compatible with a B-stage phenolic resin, by polymerising an aqueous emulsion of vinyl acetate in the presence of hydrogen peroxide at a polymerisation temperature of at least 85‹C. and in the presence of, as emulsifying agent, polyvinyl alcohol or by polymerising at least 80% by weight of vinyl acetate with at least one polymerisable comonomer selected from α and #- unsaturated carboxylic acids, their alkyl esters, their hydroxy-alkyl o esters, their amides and N-alkanol derivatives of their amides and (b) mixing the stabilized emulsion with a B-stage phenolic resin dissolved in an organic solvent. In Examples wood, plastic and metal substrates are coated.

    Epoxy resin adhesive compositions
    9.
    发明授权
    Epoxy resin adhesive compositions 失效
    环氧树脂粘合剂组合物

    公开(公告)号：US3169936A

    公开(公告)日：1965-02-16

    申请号：US23980862

    申请日：1962-11-23

    Applicant: NAT STARCH CHEM CORP

    Inventor： ARMOUR WALTER B ,  DIAMANTOPOULOS MICHAEL P

    IPC: C09J115/00 ,  C09J123/28 ,  C09J163/08

    CPC classification number: C09J163/08 ,  C08L2666/04 ,  C08L2666/06 ,  C08L2666/22 ,  C09J115/00 ,  C09J123/28 ,  Y10T428/287 ,  Y10T428/2878

    Abstract: An adhesive composition comprises an epoxidized polybutadiene resin containing ethylenic unsaturation and having both terminal and internal epoxy groups and a chlorinated interpolymer of atactic polypropylene and an ethylene-propylene copolymer. The compositions may contain catalysts such as tertiary amines, Lewis acids and Lewis acid salts; or, hardeners such as primary and secondary amines, polycarboxylic acid anhydrides and polyphenols. The compositions may be dispersed or dissolved in an organic solvent or emulsified in an aqueous solution of an emulsifier such as polyvinyl alcohol or a morpholineoleic acid mixture.ALSO:Substrata are coated with films comprising the dried, consolidated residue of an adhesive composition an epoxidized polybutadiene resin containing ethylenic unsaturation and having both terminal and internal epoxy groups and a chlorinated interpolymer of an atactic polypropylene and an ethylene-propylene copolymer, with or without curing agents, solvents, dispersants and emulsifying agents. Substrata specified are aluminium, steel, wood, e.g. plywood, and plastics films and sheets of polyethylene terephthalate, polystyrene, rubber hydrochloride, polyethylene, polypropylene, polyvinyl chloride and polyvinylidene chloride.

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