Silicone containing automotive vinyl and rubber protectant

• US 5,227,200 A
• Filed: 03/09/1992
• Issued: 07/13/1993
• Est. Priority Date: 03/09/1992
• Status: Expired due to Fees

• Current Assignee: Dow, Inc.
• Original Assignee: Dow, Inc.
• Inventors: LeGrow, Gary E.
• Primary Examiner(s): Lusigan, Michael
• Assistant Examiner(s): Dudash, Diana
• Application Number:
  US07/848,606
• Time in Patent Office: 491 Days
• Field of Search: 427/387, 427/393.4, 427/389, 427/393.5
• US Class Current: 427/387
• CPC Class Codes: B05D 3/101 Pretreatment of polymeric substrate
• CPC Class Codes: B05D 3/104 Pretreatment of other substrates
• CPC Class Codes: B05D 7/02 to macromolecular substances, e.g. rubber treatment or coating of shaped articles made of macromolecular substances C08J7/00
• CPC Class Codes: B05D 7/12 to leather chemical treatment of leather C14C; dyeing leather D06P
• CPC Class Codes: C08J 2483/00 Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
• CPC Class Codes: C08J 7/0427 with only one layer of a composition containing a polymer binder with more layers C08J7/042
• CPC Class Codes: C14C 11/003 using macromolecular compounds

Abstract

A silicone containing automotive vinyl, rubber and leather protectant in the form of a solvent solution, a water dilutable emulsion, or as a "neat" fluid. The silicone is an alkylaryl silicone copolymer having long chain hydrocarbon units and aromatic units. The protectant formulation exhibits greater substantivity to organic surfaces such as vinyl, rubber and leather, and possesses enhanced penetration of organic surfaces to which it is applied resulting in an improvement in protection of such surfaces against the deterioration caused by ultraviolet radiation. Treated surfaces are also rendered paintable.

Claims

1. A method of providing a protective finish to a vinyl, rubber or leather substrate comprising applying to the substrate a protectant composition which includes an alkylaryl polysiloxane copolymer having the formula ##STR3## in which x and y are integers each of which is equal to at least one, the sum of x and y is from twenty to about one hundred, z has a value of zero to four, n is an integer having a value of five to about thirty, Ph is phenyl, and R is an alkyl group having from one to six carbon atoms.

2. A method according to claim 1 in which the ratio of x:

y is 1;

4.

3. A method according to claim 1 in which the sum of x and y is 30-70.

4. A method according to claim 1 in which R is methyl, n is eleven, z is three, and the sum of x and y is fifty.

5. A method according to claim 1 in which the composition is in the form of a solvent solution of the polysiloxane copolymer, the solvent being a volatile carrier selected from the group consisting of (i) methylsiloxane fluids having a viscosity of less than about ten centistokes including cyclopolysiloxanes of the formula [(CH₃)₂ SiO]_x and linear siloxanes of the formula (CH₃)₃ SiO[(CH₃)₂ SiO]_y Si(CH₃)₃ in which x is an integer having a value of from three to ten and y is an integer having a value of from zero to about four, and (ii) hydrocarbons having from six to sixteen carbon atoms in the molecule including straight and branched chains.

6. A method according to claim 1 in which the composition is in the form of an aqueous emulsion of the polysiloxane copolymer.

7. A method according to claim 1 in which the composition consists of the polysiloxane copolymer in neat form.