摘要:
Crosslinkable compounds obtainable by reaction of water-soluble mono- or polyamines with 2,3-epoxypropyl sulphonates or 2-hydroxypropyl 1,3-bis-sulphonates or their mixtures with up to 15 mol % of an epihalogenohydrin or dihalogenohydrin are used for imparting wet strength to paper.
摘要:
New (meth)-acrylates of siloxanes containing tricyclodecane groups having the formula ##STR1## are prepared by reacting poly(hydroxymethyl-tricyclo [5.2.1.0.sup.2.6 ]decanyl)siloxanes, or the alkylene oxide adducts thereof with (meth)acrylic acid or a derivative thereof or with an isocyanato (meth)acrylate.These compounds can be employed as monomers to prepare polymers and dental materials.
摘要:
The new (meth)acrylic acid derivatives containing urethane groups can be prepared by reaction of a (meth)acrylic acid ester with diisocyanates and subsequent reaction with polyols. The compounds can be used for dental materials.
摘要:
(Meth)-acrylic acid esters of the formula ##STR1## in which R.sup.1 and R.sup.2 are each independently hydrogen, chlorine, fluorine or a C.sub.1 - to C.sub.4 -alkyl radical andR.sup.3 and R.sup.4 are identical or different and represent the group ##STR2## wherein Y is a divalent bridge member from the group ##STR3## and Z is a straight-chain or branched hydrocarbon chain which has 2 to 10 carbon atoms, can optionally contain oxygen bridges and is optionally substituted by 1 to 4 acrylate or methacrylate radicals,whereinR.sup.5 represents hydrogen or methyl andR.sup.6 represents hydrogen, C.sub.1 -C.sub.6 - alkyl or phenyl,which are useful as dental materials.
摘要:
The invention relates to new cleavable surface-active silane derivatives of the formula ##STR1## in which R.sub.1, n, R.sub.2, R.sub.3, X, m and R.sub.4 have the meaning given in the description, and furthermore processes for the preparation of these silane derivatives and the use of these compounds as surfactants.
摘要:
Cationic crosslinkable polyamidoamine resins which are obtainable by reaction of(A) a water-soluble polyamidoamine prepared from(1) aliphatic or aromatic dicarboxylic acids or functional derivatives thereof, such as anhydrides, esters or half-esters, and .omega.-aminocarboxylic acids containing at least 3 C atoms or lactams thereof, and(2) a polyamine mixture of (.alpha.) polyamines which contain at least two amino groups which are capable of amide formation and at least one further secondary or tertiary amino group, and (.beta.) polyamines which contain only two amino groups which are capable of amide formation,(B) with an epihalogenohydrin, in a molar ratio of 0.7 to 3.5 mol of epihalogenohydrin per mol of basic nitrogen in component (A),(C) with an inorganic base and(D) with 0.2 to 9.0 mol of a halogen-free mineral or carboxylic acid, the acid being added in at least an amount to give a pH of at least 5,are used as agents for imparting wet strength to paper.
摘要:
Crosslinkable compounds obtainable by reaction of water-soluble mono- or polyamines with 2,3-epoxypropyl sulphonates or 2-hydroxypropyl 1,3-bis-sulphonates or their mixtures with up to 15 mol % of an epihalogenohydrin or diyhalogenohydrin are used for imparting wet strength to paper.
摘要:
The new (meth)acrylic acid derivatives containing urethane groups can be prepared by reaction of a (meth)acrylic acid ester with diisocyanates and subsequent reaction with polyols. The compounds can be used for dental materials.
摘要:
The new (meth)-acrylic acid derivatives of triisocyanates can be prepared by reacting appropriate triisocyanates with hydroxyalkyl (meth)-acrylates. The compounds can be employed as monomers for use in the dental field.
摘要:
(Meth)-acrylic acid esters of the formula ##STR1## in which R.sup.1 and R.sup.2 are identical or different and denote hydrogen, chlorine, fluorine or a C.sub.1 - to C.sub.4 -alkyl radical andR.sup.3 and R.sup.4 are identical or different and represent the group ##STR2## wherein R.sup.5 and R.sup.6 are identical or different and denote hydrogen or methyl,Z denotes a straight-chain or branched C.sub.2 - to C.sub.8 -alkylene chain andn denotes values from 1 to 4. Such (meth)-acrylic acid esters can be used as dental fillers or to coat teeth.