 Dropper bottle assembly with squeeze cap |
| Applicants have invented an improved dropper bottle assembly which minimizes or eliminates many of ... |
|
| Impact resistant coating composition |
| What is claimed is: 1. A polyvinyl chloride-based coating composition which protects against impact ... |
|
| Container and blow-molded product |
| What is claimed is: 1. A container comprised of a laminate having (I) a layer comprising a ... |
|
| Polyurethane-epoxy casting resin |
| The epoxy resin components useful for the purposes of this invention are those epoxy compounds ... |
|
| Water based coating composition and polymer film coated therewith |
| What is claimed is: 1. A water based antistatic polymer film coating composition comprising: (a) at ... |
|
| Oligomeric aromatic dispersing agents, method of making same, and dispersions made therefrom |
| OF THE PREFERRED EMBODIMENTS As stated above, the oligomeric aromatic dispersant is a reaction ... |
|
| Softening non-swelling polyurethane |
| While this invention is satisfied by embodiments in many different forms, there will herein be ... |
|
| Coating composition of an acrylic polymer, polyol and polyisocyanate crosslinking agent |
| We claim: 1. A clear coating composition which cures at ambient temperatures having a film forming ... |
|
|
Aqueous dispersions of organopolysiloxanes
| Details |
|
Inventors: Braun, Rudolf; Braunsperger, Karl; Sollradl, Herbert; Oberneder, Stefan; Braunsperger, Robert;
Assignee: Wacker-Chemie GmbH (Munchen, DE)
Primary Examiner: Niland; Patrick D.
Assistant Examiner:
Attorney, Agent or Firm: Brooks & Kushman P.C.
Aqueous dispersions of organopolysiloxanes comprising (A) an organopolysiloxane containing groups which are capable of condensation, (B) a condensation catalyst, (C) an organopolysiloxane resin which is at least partly soluble in organopolysiloxane (A) when present in amounts of up to 50% by weight based on the weight of (A), (D) a compound containing basic nitrogen and (E) polyvinyl alcohol. The aqueous dispersions are prepared by dissolving the organopolysiloxane resin (C) in the organopolysiloxane (A) and then emulsifying the solution with polyvinyl alcohol (E) and water. The stable aqueous dispersions of the present invention cure to form transparent films. |
|
DETAILED DESCRIPTION What is claimed is: 1.
An aqueous organopolysiloxane dispersion which cures to form a transparent elastomer, comprising (A) an organopolysiloxane containing groups which are capable of condensation, (B) a condensation catalyst, (C) an organopolysiloxane resin which is at least partly soluble in organopolysiloxane (A) when present in amounts of up to 50% by weight based on the weight of (A), (D) a compound containing basic nitrogen and (E) a polyvinyl alcohol.
2.
The aqueous dispersion of claim 1, wherein the polyvinyl alcohol (E) is employed in amounts of from 0.
5 to 10 parts by weight per 100 parts by weight of organopolysiloxane (A).
3.
The aqueous dispersion of claim 1, wherein the polyvinyl alcohol (E) has a molecular weight of from 20,000 to 100,000 and a hydrolysis number of more than 100.
4.
The aqueous dispersion of claim 1, wherein the organopolysiloxane (A) has the formula RO--[SiR.
sup.
1.
sub.
2 O].
sub.
n --R (I), in which R is selected from the group consisting of a hydrogen atom and alkyl radical having from 1 to 6 carbon atom(s), R.
sup.
1 is selected from the group consisting of hydrocarbon radicals having 1 to 18 carbon atom(s), and hydrocarbon radicals having from 1 to 18 carbon atom(s) which are substituted by radicals selected from the group consisting of halogen atoms, amino groups, ether groups, ester groups, epoxy groups, mercapto groups, cyano groups and (poly)glycol radicals, in which the (poly)glycol radicals contain oxyethylene and/or oxypropylene units, and n is an integer of at least 30.
5.
The aqueous dispersion of claim 1, wherein the organopolysiloxane resin (C) contains units of the formula ##EQU3## in which R.
sup.
2 is selected from the group consisting of hydrocarbon radicals having from 1 to 18 carbon atom(s), and hydrocarbon radicals having from 1 to 18 carbon atom(s) which are substituted by radicals selected from the group consisting of halogen atoms, amino groups, ether groups, ester groups, epoxy groups, mercapto groups, cyano groups and (poly)glycol radicals, in which the (poly)glycol radicals contain oxyethylene units and/or oxypropylene units, and a is a number having an average value of from 0
|
| Related patents |
|
|
Resilient superabsorbent compositions
What is claimed is: 1. A process, the process comprising dry blending a polymer with at least 0.5 percent of a multivalent metal salt, based on the weight of the mixture ...
|
|
|
Absorbent structures with integral layer of superabsorbent polymer particles
OF THE INVENTION All patents, patent applications and references cited herein are hereby incorporated by reference in their entirety. In case of any inconsistency, the ...
|
|
|
Absorbent, lubricious coating and articles coated therewith
OF THE PREFERRED EMBODIMENTS Reference now will be made in detail to the embodiments of the invention, one or more examples of which are set forth below. Each example ...
|
|
|
Molded soft elastomer/hard polyester composition with noise damping properties
OF THE INVENTION The inhomogeneous structure of the molded composition according to the invention contains domains/layers of different density, modulus and reinforcing ...
|
|
|
Adhesive resin composition
OF THE INVENTION (1) Ethylene polymer and modified ethylene polymer with unsaturated carboxylic acid or its derivative (Component A) (i) Ethylene polymer (Component A....
|
|
|
Coating compositions having improved scratch resistance, coated substrates and methods related thereto
OF THE DRAWINGS FIG. 1 is a transmission electron micrograph (30,000.times. magnification) of a cross-section of a cured transparent topcoating composition of the ...
|
|
|
Polymer powders, pressure sensitive adhesives and methods of making the same
A method is provided for the preparation of gel-free poly 2-hydroxyethyl methacrylate substantially in the absence of a chain transfer agent, comprising introducing ...
|
|
|
Plastic core composite having improved impact resistance
I claim: 1. An improved composite construction comprising a plastic core having opposed major faces of extended surface area, a metallic layer on at least one of said ...
|
|
|
Container with twist-off tamper evident feature
These and other objects are realized by a container in which the neck and an integral sealing member extending across an outlet in the neck define a thinner, weaker ...
|
|
|
Multilayer structure and easily openable container and lid
An object of the present invention is to provide a multilayer structure which ensures a stable peeling strength regardless of the alteration of molding conditions, the ...
|
|
|
Adhesives and Rubbers 
